Welded Steel Pipe: Versatile & Cost-Effective for Diverse Industrial Applications
Product Overview
Our welded steel pipes are engineered to deliver reliable performance across a wide range of industries, combining affordability with robust structural integrity. Manufactured through advanced welding processes (ERW, LSAW, SSAW), these pipes feature precise dimensions and consistent quality, making them ideal for fluid transport, structural support, and mechanical applications. Trusted in sectors such as construction, oil & gas, water supply, and infrastructure development, they offer a cost-efficient alternative to seamless pipes without compromising on durability.
Key Features
- Cost-Effective: Lower production costs compared to seamless pipes, ideal for large-scale projects.
- Uniform Dimensions: High-precision manufacturing ensures tight tolerances for seamless system integration.
- Corrosion Resistance: Available in carbon steel, alloy steel, and stainless steel grades, with optional anti-corrosion coatings (e.g., galvanized, epoxy, 3PE) for extended service life.
- High Strength: Engineered to withstand moderate to high-pressure environments, including water, gas, and steam applications.
- Customizable Specifications: Tailored dimensions, wall thicknesses, and end finishes (beveled, threaded, plain) to meet project-specific needs.
Production Standards & Certifications
- Global Compliance: Produced in accordance with leading international standards:
- ASTM: A53, A135, A252, A672, etc.
- DIN: EN 10217, EN 10219, etc.
- ISO: ISO 3183, ISO 4200, etc.
- GB/T: GB/T 3091, GB/T 9711, GB/T 13793, etc.
- Certifications: ISO 9001 (Quality Management), ISO 14001 (Environmental Management), API 5L (for line pipes), and other industry-specific approvals.
Applications
- Construction: Structural frameworks, scaffolding, fencing, and piling.
- Oil & Gas: Low-pressure pipelines, casing pipes, and drilling equipment.
- Water Supply: Potable water distribution, sewage systems, and irrigation networks.
- Mechanical Engineering: Machinery components, conveyor systems, and hydraulic tubing.
- Infrastructure: Road guardrails, bridge supports, and utility tunnels.
Technical Specifications
- Outer Diameter (OD): 21.3 mm – 2420 mm (1/2″ – 96″)
- Wall Thickness: 1.5 mm – 25 mm (SCH 10 – SCH XXS)
- Length: Random (5–12 m), Fixed (cut-to-length), or SRL/DRL (Single Random Length/Double Random Length).
- Surface Finish: Black painting, varnished, galvanized (hot-dip/electro), or anti-corrosion coated.
- End Types: Plain end, beveled end, threaded end, or socket-welded.
Why Choose Our Welded Steel Pipes?
- Quality Assurance: Rigorous testing (hydrostatic, ultrasonic, X-ray) ensures defect-free products.
- Cost Savings: Competitive pricing without compromising on performance or longevity.
- Global Reach: Export-ready packaging and documentation for efficient international logistics.
- Custom Solutions: Flexible production capabilities to accommodate unique project requirements.
Packaging & Delivery
- Packaging: Bundled with steel strips, wrapped in waterproof material, or loaded into containers per customer request.
- Delivery: Prompt shipping via sea, air, or land transport, with FOB, CIF, or EXW terms available.
Contact Us
Partner with us for premium welded steel pipes that balance affordability and performance. Our team is ready to provide technical support, competitive pricing, and fast delivery for your next project.
PRODUCTION STANDARD FOR WELDED STEEL PIPE
| NO. | STANDARD | DESCRIPTION |
| 1 | ASME SA249 | Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| 2 | ASME SA269 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
| 3 | ASME SA312 | Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| 4 | ASME SA333 | Seamless and Welding Nominal Pipe used for Low Temperature |
| 5 | ASME SA358 | Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications |
| 6 | ASME SA688 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes |
| 7 | ASME SA789 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| 8 | ASME SA790 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
| 9 | ASME SA928 | Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal |
| 10 | ASTM A178 | Electric-Resistance-Welded Carbon Steel and Carbon·Manganese Steel Boiler and Superheater Tubes |
| 11 | ASTM A214 | Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes |
| 12 | ASTM A249 | Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| 13 | ASTM A252 | Standard Specification for Welded and Seamless Steel Pipe Piles |
| 14 | ASTM A268 | Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| 15 | ASTM A269 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
| 16 | ASTM A312 | Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| 17 | ASTM A334 | Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service |
| 18 | ASTM A358 | Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications |
| 19 | ASTM A500 | Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes |
| 20 | ASTM A501 | Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing |
| 21 | ASTM A513 | Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing |
| 22 | ASTM A53 | Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless |
| 23 | ASTM A688 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes |
| 24 | ASTM A789 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| 25 | ASTM A790 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
| 26 | ASTM A795/A795M-21 | Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use |
| 27 | ASTM A928 | Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal |
| 28 | ASTM B673 | Standard Specification for Nickel-Iron-Chromium-Molybdenum-Nitrogen Alloy, Nickel-Iron-Chromium-Molybdenum and Iron-Nickel-Chromium-Molybdenum-Copper Welded Pipe |
| 29 | ASTM B675 | Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy Welded Pipe |
| 30 | ASTM B705 | Standard Specification for Nickel-Alloy Welded Pipe |
| 31 | BS 2363 | Seamless and welded steel tubes for automobiles,mechanicaland general engineering prupose |
| 32 | DIN 2393 | Welded precision steel tubes |
| 33 | DIN 2394 | Welded and Sized Precision Steel Tubes |
| 34 | EN 10217 | Welded steel tubes for pressure purposes — Technical delivery conditions |
| 35 | EN 10219 | Cold formed welded steel structural hollow sections |
| 36 | EN 10253 | Butt-welding pipe fittings |
| 37 | EN 10255 | Non-alloy steel tubes suitable for welding and threading — Technical delivery conditions |
| 38 | EN 10305-2 | Welded cold drawn tubes |
| 39 | EN 10305-5 | Welded and cold sized square and retangular tubes |
| 40 | EN 10305-6 | Welded cold drawn tubes for hydraulic and pneumatic power systems |
| 41 | GB/T 12770-2012 | Welded stainless steel tubes for mechanical structures |
| 42 | GB/T 12770-2025 | Welded stainless steel tubes for mechanical structures |
| 43 | GB/T 12771-2019 | Welded stainless steel pipes for fluid transport |
| 44 | GB/T 13793-2016 | Steel pipes with a longitudinal electric（resistance）weld |
| 45 | GB/T 14291-2016 | Welded steel pipe for ore pulp transportation |
| 46 | GB/T 21832.1-2018 | Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 1:Tubes for heat exchanger |
| 47 | GB/T 21832.2-2018 | Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport |
| 48 | GB/T 21832.3-2024 | Welded austenitic-ferritic(duplex) stainless steel tubes and pipes—Part 3: Pipes for oil and gas transmission |
| 49 | GB/T 24187-2023 | Cold-drawn precision single welded steel tubes |
| 50 | GB/T 24593-2018 | Welded austenitic stainless steel tubes for boiler and heat exchanger |
| 51 | GB/T 24593-2018 | Welded austenitic stainless steel tubes for boiler and heat exchanger |
| 52 | GB/T 28413-2012 | Welded carbon steel tubes for boilers and heat exchangers |
| 53 | GB/T 30063-2013 | Longitudinal submerged arc welded steel tubes for structural purpose |
| 54 | GB/T 30065-2013 | Welded ferritic stainless steel tubes for feedwater heater |
| 55 | GB/T 30066-2013 | Welded ferritic stainless steel tubes for heat-exchanger and condenser |
| 56 | GB/T 30813-2014 | Welded austenitic stainless steel tubes and pipes for nuclear power plant |
| 57 | GB/T 3091—2025 | Welded steel pipes for low pressure fluid delivery |
| 58 | GB/T 31315-2014 | Cold drawn or cold rolled precision weld steel tubes for mechanical structures |
| 59 | GB/T 31929-2015 | Welded stainless steel pipes for ship |
| 60 | GB/T 31941-2015 | Non-nuclear safety class welded carbon steel and alloy steel pipes for nuclear power plant |
| 61 | GB/T 32569-2016 | Welded stainless steel tubes for seawater desalination plants |
| 62 | GB/T 32964-2016 | Welded stainless steel pipes for liquefied natural gas |
| 63 | GB/T 32970-2016 | Longitudinal submerged-arc welded steel pipe for high pressure service at high temperatures |
| 64 | GB/T 33156-2016 | Precision welded tubes for gas spring |
| 65 | GB/T 37577-2019 | Welded large diameter steel pipes for low-temperature-service piping |
| 66 | GB/T 37636-2019 | Welded steel pipes for offshore engineering pile |
| 67 | GB/T 40316-2021 | Welded high strength shaped and round steel tubes for automobile structure |
| 68 | GB/T 41354-2022 | Hydraulic fluid power—Plain-end,seamless and welded precision steel tubes—Dimensions and nominal working pressures |
| 69 | GB/T 42675-2023 | Welded antibacterial stainless steel pipes and fittings |
| 70 | GB/T 45779-2025 | Welded shaped steel tubes for structure |
| 71 | GB/T 5117-2012 | Covered electrodes for manual metal arc welding of non-alloy and fine grain steels |
| 72 | GB/T 983-2012 | Welding consumables — Covered electrodes for manual metal arc welding of stainless and heat-resisting steels – Classifications, MOD |
| 73 | GB/T12459-2017 | Steel Buttwelding Pipe Fittings – Types and Parameters |
| 74 | GB/T13401-2017 | Steel Buttwelding Pipe Fittings – Technical Specifications |
| 75 | ISO 10763 | Hydraulic fluid power — Plain-end, seamless and welded precision steel tubes — Dimensions and nominal working pressures |
| 76 | ISO 2560:2020 | Welding consumables — Covered electrodes for manual metal arc welding of non-alloy and fine grain steels — Classification |
| 77 | ISO 3581 | Welding consumables |
| 78 | JIS G3472 | Electric Resistance Welded Carbon Steel Tubes for Automobile Structural Purposes |
| 79 | EN 10296-1 | Welded circular steel tubes for mechanical and general engineering purposes. Non.alloy and alloy steel tubes |
PRODUCTION STANDARD FOR ALL STEEL PIPES IN ALPS
| NO. | STANDARD | DESCRIPTION |
| 1 | API 5CT | Specification for Casing and Tubing |
| 2 | API 5L | Specification for Line Pipe |
| 3 | API SPEC 5DP | Specification for Drill Pipe |
| 4 | ASEM SB729 | Seamless UNS N08020, UNS N08026, UNS N08024 Nickel Alloy Nominal Pipe and Tube |
| 5 | ASME B16.9 | Factory-Made Wrought Buttwelding Fittings |
| 6 | ASME SA-106M | Specification For Seamless Carbon Steel Pipefor High-Temperature Service |
| 7 | ASME SA-179/SA-179M | Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes |
| 8 | ASME SA192M | Seamless Carbon Steel Boil Pipe used for High Pressure |
| 9 | ASME SA209 | Seamless Carbon Molybdenum Alloy Pipe used for Boiler and Superheater |
| 10 | ASME SA-210M | Seamless Medium Carbon Steel Tube & Pipe used for Boiler and Superheater |
| 11 | ASME SA-213M | Seamless Ferrite and Austenite Alloy Steel Pipe used for Boiler, Superheater and Heat Exchanger |
| 12 | ASME SA249 | Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| 13 | ASME SA269 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
| 14 | ASME SA312 | Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| 15 | ASME SA333 | Seamless and Welding Nominal Pipe used for Low Temperature |
| 16 | ASME SA-335M | Seamless Ferrite Alloy Nominal Steel Pipe applied for High Temperature |
| 17 | ASME SA358 | Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications |
| 18 | ASME SA-556M | Seamless cold drawn carbon steel tube for feed water heater |
| 19 | ASME SA688 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes |
| 20 | ASME SA789 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| 21 | ASME SA790 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
| 22 | ASME SA928 | Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal |
| 23 | ASME SB163 | Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes |
| 24 | ASME SB165 | Standard Specification for Nickel-Copper Alloy Nominal Pipe and Tube |
| 25 | ASME SB167 | Standard Specification for Nickel-Chromium-Iron Alloys and Nickel-Chromium-Cobalt-Molybdenum Alloys Seamless Nominal Pipe and Tube |
| 26 | ASME SB407 | Nickel-Iron-Chromium Alloy Nominal Pipe and Tube |
| 27 | ASME SB423 | Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy Nominal Pipe and Tube |
| 28 | ASME SB444 | Standard specification for Nickel-Chromium-Molybdenum-Columbium Alloy and Nickel-Chromium-Molybdenum-Silicon Alloy Nominal Pipe and Tube |
| 29 | ASME SB622 | Seamless Nickel and Nickel Cobalt Alloy Nominal Pipe and Tube |
| 30 | ASME SB668 | UNS N08028 Seamless Pipes |
| 31 | ASME SB690 | Specification for Iron-Nickel-Chromium-Molybdenum Alloys Nominal Pipe and Tube |
| 32 | ASTM A 209M | Seamless Carbon Molybdenum Alloy Pipe used for Boiler and Superheater |
| 33 | ASTM A106/A106M | Standard Specification for Seamless Carbon Steel Pipe for High-Temperature Service |
| 34 | ASTM A153 | Standard Specification for Zinc Coating (Hot-Dip) on Iron and Steel Hardware |
| 35 | ASTM A178 | Electric-Resistance-Welded Carbon Steel and Carbon·Manganese Steel Boiler and Superheater Tubes |
| 36 | ASTM A179M | Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes |
| 37 | ASTM A192M | Seamless Carbon Steel Boil Pipe used for High Pressure |
| 38 | ASTM A210M | Standard Specification for Seamless Medium-CarbonSteel Boiler and Superheater Tubes |
| 39 | ASTM A213M | Seamless Ferrite and Austenite Alloy Steel Pipe used for Boiler, Superheater and Heat Exchanger |
| 40 | ASTM A214 | Electric-Resistance-Welded Carbon Steel Heat-Exchanger and Condenser Tubes |
| 41 | ASTM A249 | Standard Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser Tubes |
| 42 | ASTM A252 | Standard Specification for Welded and Seamless Steel Pipe Piles |
| 43 | ASTM A268 | Standard Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service |
| 44 | ASTM A269 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service |
| 45 | ASTM A312 | Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes |
| 46 | ASTM A334 | Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service |
| 47 | ASTM A335 | Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
| 48 | ASTM A358 | Standard Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Stainless Steel Pipe for High-Temperature Service and General Applications |
| 49 | ASTM A372 | Standard Specification for Carbon and Alloy Steel Forgings for Thin-Walled Pressure Vessels |
| 50 | ASTM A376 | Standard Specification for Seamless Austenitic Steel Pipe for High-Temperature Central-Station Service |
| 51 | ASTM A403 | Standard Specification for Wrought AusteniticStainless Steel Piping Fittings |
| 52 | ASTM A500 | Standard Specification for Cold-Formed Welded and Seamless Carbon Steel Structural Tubing in Rounds and Shapes |
| 53 | ASTM A501 | Standard Specification for Hot-Formed Welded and Seamless Carbon Steel Structural Tubing |
| 54 | ASTM A513 | Standard Specification for Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing |
| 55 | ASTM A517 | Standard Specification for Pressure Vessel Plates, Alloy Steel, High-Strength, Quenched and Tempered |
| 56 | ASTM A519 | Seamless carbon steel & alloy mechanical tubing |
| 57 | ASTM A53 | Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless |
| 58 | ASTM A688 | Standard Specification for Seamless and Welded Austenitic Stainless Steel Feedwater Heater Tubes |
| 59 | ASTM A700 | Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment |
| 60 | ASTM A789 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
| 61 | ASTM A790 | Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe |
| 62 | ASTM A795/A795M-21 | Standard Specification for Black and Hot-Dipped Zinc-Coated (Galvanized) Welded and Seamless Steel Pipe for Fire Protection Use |
| 63 | ASTM A928 | Standard Specification for Ferritic/Austenitic (Duplex) Stainless Steel Pipe Electric Fusion Welded with Addition of Filler Metal |
| 64 | ASTM B163 | Standard Specification for Seamless Nickel and Nickel Alloy Condenser and Heat-Exchanger Tubes |
| 65 | ASTM B165 | Standard Specification for Nickel-Copper Alloy Nominal Pipe and Tube |
| 66 | ASTM B167 | Standard Specification for Nickel-Chromium-Iron Alloys and Nickel-Chromium-Cobalt-Molybdenum Alloys Seamless Nominal Pipe and Tube |
| 67 | ASTM B423 | Standard Specification for Nickel-Iron-Chromium-Molybdenum-Copper Alloy Nominal Pipe and Tube |
| 68 | ASTM B673 | Standard Specification for Nickel-Iron-Chromium-Molybdenum-Nitrogen Alloy, Nickel-Iron-Chromium-Molybdenum and Iron-Nickel-Chromium-Molybdenum-Copper Welded Pipe |
| 69 | ASTM B675 | Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy Welded Pipe |
| 70 | ASTM B677 | Standard Specification for Nickel-Iron-Chromium-Molybdenum and Iron-Nickel-Chromium-Molybdenum-Copper Seamless Pipe and Tube |
| 71 | ASTM B690 | Standard Specification for Iron-Nickel-Chromium-Molybdenum Alloy Seamless Pipe and Tube |
| 72 | ASTM B705 | Standard Specification for Nickel-Alloy Welded Pipe |
| 73 | ASTM F1545 | Standard Specification for Plastic-Lined Ferrous Metal Pipe, Fittings, and Flanges |
| 74 | BS 1387 | Steel Tubes and Tubulars Suitable for Sercwing to BS 21 Pipe Theads |
| 75 | BS 2363 | Seamless and welded steel tubes for automobiles,mechanicaland general engineering prupose |
| 76 | BS EN 10297-1 | Seamless circular steel tubes for mechanical and general engineering purposes. Technical delivery conditions-Non-alloy and alloy steel tubes |
| 77 | BS EN 10305-1 | Technical specification of cold processing precise pipe |
| 78 | BS EN ISO 11120 | Gas cylinders – Refillable seamless steel tubes for compressed gas transport, of water capacity between 150L and 3000L – Design construction and testing |
| 79 | CSA Z245.1 | Steel Pipe |
| 80 | DIN 1629 | Seamless Circular Tubes Of Non Alloys Steels With Special Quality Requirements |
| 81 | DIN 17175 | Seamless Steel Pipe made by Heat-resistant Steel |
| 82 | DIN 2391 | Seamless precision steel tubes |
| 83 | DIN 2393 | Welded precision steel tubes |
| 84 | DIN 2394 | Welded and Sized Precision Steel Tubes |
| 85 | DIN 30670 | Polyethylene coatings on steel pipes and fittings – Requirements and testing |
| 86 | DIN 30678 | Polyethylen coatings of steel pipes and fittings |
| 87 | DIN EN 10305 | Steel tubes for precision applications–Technical delivery conditions |
| 88 | EN 10216-1 | Seamless Steel Pipe for Pressure purposes |
| 89 | EN 10216-2 | Seamless steel tubes for pressure purposes, Non.alloy and alloy steel tubes with specified elevated temperature properies |
| 90 | EN 10216-3 | Seamless steel tubes for pressure purposes – Technical delivery conditions |
| 91 | EN 10216-4 | Seamless Steel Pipe for Pressure purposes |
| 92 | EN 10217 | Welded steel tubes for pressure purposes — Technical delivery conditions |
| 93 | EN 10219 | Cold formed welded steel structural hollow sections |
| 94 | EN 10253 | Butt-welding pipe fittings |
| 95 | EN 10255 | Non-alloy steel tubes suitable for welding and threading — Technical delivery conditions |
| 96 | EN 10305-1 | Seamless cold drawn tubes |
| 97 | EN 10305-2 | Welded cold drawn tubes |
| 98 | EN 10305-3 | Steel tubes for precision applications |
| 99 | EN 10305-4 | Seamless cold drawn tubes for hydraulic and pneumatic power systems |
| 100 | EN 10305-5 | Welded and cold sized square and retangular tubes |
| 101 | EN 10305-6 | Welded cold drawn tubes for hydraulic and pneumatic power systems |
| 102 | EN 61386-21:2004 | Conduit systems for cable management |
| 103 | GB/T 12770-2012 | Welded stainless steel tubes for mechanical structures |
| 104 | GB/T 12770-2025 | Welded stainless steel tubes for mechanical structures |
| 105 | GB/T 12771-2019 | Welded stainless steel pipes for fluid transport |
| 106 | GB/T 13296-2023 | Seamless stainless steel tubes for boiler and heat exchanger |
| 107 | GB/T 13793-2016 | Steel pipes with a longitudinal electric（resistance）weld |
| 108 | GB/T 14291-2016 | Welded steel pipe for ore pulp transportation |
| 109 | GB/T 14975-2012 | Seamless stainless steel tubes for structure |
| 110 | GB/T 14975-2025 | Seamless stainless steel tubes for structure |
| 111 | GB/T 14976-2025 | Seamless stainless steel pipes for fluid transport |
| 112 | GB/T 15831-2023 | Steel tube scaffold coupler |
| 113 | GB/T 17193 | Extra-heavy duty rigid steel conduits for electrical installations |
| 114 | GB/T 17396-2022 | Seamless hot-rolled steel tubes for hydraulic pillar service |
| 115 | GB/T 17616-2013 | Unified numbering system for designation of iron,steel and alloy |
| 116 | GB/T 18248-2021 | Seamless steel tubes for gas cylinder |
| 117 | GB/T 18984-2016 | Seamless steel tubes for low-temperature-service piping |
| 118 | GB/T 19228.2-2011 | Stainless steel press-fitting assemblies – Part 2：Light gauge stainless steel tubes for press-fittings |
| 119 | GB/T 19830-2023 | Petroleum and natural gas industries—Steel pipes for use as casing or tubing for wells |
| 120 | GB/T 20409-2018 | Seamless multi-rifled steel tubes for high-pressure boiler |
| 121 | GB/T 2102-2022 | Acceptance, packaging, marking and quality certification for steel tubular products |
| 122 | GB/T 21832.1-2018 | Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 1:Tubes for heat exchanger |
| 123 | GB/T 21832.2-2018 | Welded austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2:Pipes for fluid transport |
| 124 | GB/T 21832.3-2024 | Welded austenitic-ferritic(duplex) stainless steel tubes and pipes—Part 3: Pipes for oil and gas transmission |
| 125 | GB/T 21833.1-2020 | Seamless austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 1: Tubes for heat exchanger |
| 126 | GB/T 21833.2-2020 | Seamless austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 2: Pipes for fluid service |
| 127 | GB/T 21833.3-2024 | Seamless austenitic-ferritic (duplex) stainless steel tubes and pipes—Part 3:Pipes for oil and gas transmission |
| 128 | GB/T 24187-2023 | Cold-drawn precision single welded steel tubes |
| 129 | GB/T 24512.1-2009 | Seamless steel tubes and pipes for nuclear power plant – Part 1: Carbon steel seamless tubes and pipes |
| 130 | GB/T 24512.2-2009 | Seamless steel tubes and pipes for nuclear power plant – Part 2: Alloy steel seamless tubes and pipes |
| 131 | GB/T 24512.3-2014 | Seamless steel tubes and pipes for nuclear power plant ― Part 3：Seamless stainless steel tubes and pipes |
| 132 | GB/T 24591-2019 | Seamless steel tubes for high pressure feedwater heater |
| 133 | GB/T 24592-2009 | High pressure alloy steel tubes for polyethylene service |
| 134 | GB/T 24593-2018 | Welded austenitic stainless steel tubes for boiler and heat exchanger |
| 135 | GB/T 24593-2018 | Welded austenitic stainless steel tubes for boiler and heat exchanger |
| 136 | GB/T 25020.2-2016 | Steel pole for overhead contact system of electrified railways—Part 2：Square steel tube pole |
| 137 | GB/T 25822-2010 | Shaped and round seamless steel tubes for axle |
| 138 | GB/T 26500-2011 | General technical specification for pipes and fittings lined with fluoroplastics |
| 139 | GB/T 26500-2025 | Structure, main size and basic parameters of steel pipes and fitting lined with plastic |
| 140 | GB/T 28413-2012 | Welded carbon steel tubes for boilers and heat exchangers |
| 141 | GB/T 28883-2012 | Composite seamless steel tubes for pressure |
| 142 | GB/T 28884-2024 | Seamless steel tubes for large capacity gas cylinder |
| 143 | GB/T 28897-2021 | Steel-plastic compound pipes and fittings for fluid service |
| 144 | GB/T 30062-2013 | Terminology of steel pipes and tubes |
| 145 | GB/T 30063-2013 | Longitudinal submerged arc welded steel tubes for structural purpose |
| 146 | GB/T 30065-2013 | Welded ferritic stainless steel tubes for feedwater heater |
| 147 | GB/T 30066-2013 | Welded ferritic stainless steel tubes for heat-exchanger and condenser |
| 148 | GB/T 30070-2013 | Seamless alloy steel pipes for seawater service |
| 149 | GB/T 30073-2013 | Seamless austenitic stainless steel tubes for heat exchangers in nuclear power plant |
| 150 | GB/T 30584-2014 | Seamless steel pipes for crane jib |
| 151 | GB/T 30813-2014 | Welded austenitic stainless steel tubes and pipes for nuclear power plant |
| 152 | GB/T 30829-2014 | Shaped and round seamless steel tubes for oil derrick |
| 153 | GB/T 3087-2022 | Seamless steel tubes and pipes for low and medium pressure boiler |
| 154 | GB/T 3089-2020 | Seamless ultra-thin wall stainless steel tubes |
| 155 | GB/T 3090-2020 | Seamless small diameter stainless steel tubes |
| 156 | GB/T 3091—2025 | Welded steel pipes for low pressure fluid delivery |
| 157 | GB/T 3093-2021 | High-pressure seamless steel tubes for diesel engine |
| 158 | GB/T 3094-2012 | Cold drawn shaped steel tubes |
| 159 | GB/T 31315-2014 | Cold drawn or cold rolled precision weld steel tubes for mechanical structures |
| 160 | GB/T 31928-2015 | Seamless stainless steel tubes and pipes for ship |
| 161 | GB/T 31929-2015 | Welded stainless steel pipes for ship |
| 162 | GB/T 31937-2015 | SAWL steel pipe for pipeline of coal slurry |
| 163 | GB/T 31940-2025 | Bi-metal composite steel pipes for fluid transportation |
| 164 | GB/T 31941-2015 | Non-nuclear safety class welded carbon steel and alloy steel pipes for nuclear power plant |
| 165 | GB/T 32569-2016 | Welded stainless steel tubes for seawater desalination plants |
| 166 | GB/T 32957-2016 | Cold-drawn or cold-rolled precision inside diameter seamless steel tubes for hydraulic and pneumatic system service |
| 167 | GB/T 32958-2016 | Stainless steel clad pipes for fluid transport |
| 168 | GB/T 32964-2016 | Welded stainless steel pipes for liquefied natural gas |
| 169 | GB/T 32970-2016 | Longitudinal submerged-arc welded steel pipe for high pressure service at high temperatures |
| 170 | GB/T 33156-2016 | Precision welded tubes for gas spring |
| 171 | GB/T 33167-2016 | Seamless stainless steel tubes and pipes for industrial furnace of petroleum and chemical hydrogenation unit |
| 172 | GB/T 33821-2017 | Seamless steel tubes for automobile stabilizer bar |
| 173 | GB/T 33966-2017 | Seamless abrasion-resistant steel pipes for mortar service |
| 174 | GB/T 34020.1-2017 | Double wall copper-brazed steel tubes—Part 1:Tubing system for refrigerator |
| 175 | GB/T 34020.2-2017 | Double wall copper-brazed steel tubes—Part 2:Tubing system for automobiles |
| 176 | GB/T 34020.3-2017 | Double wall copper-brazed steel tubes—Part 3: Tubing system for air conditioner and refrigeration |
| 177 | GB/T 34105-2017 | Seamless steel tubes for ocean engineering structures |
| 178 | GB/T 34107-2017 | Seamless precision stainless steel pipes for rail transit vehicle braking system |
| 179 | GB/T 34109-2017 | Seamless steel tubes for drill rod of rotary digging machine |
| 180 | GB/T 34201-2017 | Seamless hot-rolled square and rectangular steel tubes for structure |
| 181 | GB/T 34567-2017 | Cold-formed corrugated steel pipes |
| 182 | GB/T 35185-2017 | Composite reinforced line pipe for the petroleum and natural gas industry |
| 183 | GB/T 3639 | Seamless cold-drawn or cold-rolled steel tubes for precision applications |
| 184 | GB/T 3639-2021 | Seamless cold-drawn or cold-rolled steel tubes for precision applications |
| 185 | GB/T 37577-2019 | Welded large diameter steel pipes for low-temperature-service piping |
| 186 | GB/T 37578-2019 | Urea grade ultra-low carbon austenitic seamless stainless steel tubes and pipes |
| 187 | GB/T 37636-2019 | Welded steel pipes for offshore engineering pile |
| 188 | GB/T 37701-2019 | Corrosion resistant alloy clad or lined steel pipe for petroleum and natural gas industries |
| 189 | GB/T 38810-2020 | Seamless stainless steel pipes for liquefied natural gas |
| 190 | GB/T 40297-2021 | Seamless austenitic stainless steel pipes for high pressure hydrogenation unit |
| 191 | GB/T 40316-2021 | Welded high strength shaped and round steel tubes for automobile structure |
| 192 | GB/T 40317-2021 | Seamless stainless steel pipes for oxygen pipeline |
| 193 | GB/T 41354-2022 | Hydraulic fluid power—Plain-end,seamless and welded precision steel tubes—Dimensions and nominal working pressures |
| 194 | GB/T 42541 | Coated steel pipes for gas piping |
| 195 | GB/T 42675-2023 | Welded antibacterial stainless steel pipes and fittings |
| 196 | GB/T 43105-2023 | Seamless steel tubes for hydroformed part |
| 197 | GB/T 43107-2023 | Seamless stainless steel tubes for instrumentation pressure connecting for nuclear power plants |
| 198 | GB/T 43898-2024 | Seamless precision steel tubes for engineering machinery hydraulic cylinder |
| 199 | GB/T 45779-2025 | Welded shaped steel tubes for structure |
| 200 | GB/T 45781-2025 | Seamless steel tubes for mechanical structures |
| 201 | GB/T 5117-2012 | Covered electrodes for manual metal arc welding of non-alloy and fine grain steels |
| 202 | GB/T 5310-2023 | Seamless steel tubes and pipes for high pressure boiler |
| 203 | GB/T 5312-2025 | Seamless steel tubes and pipes for ship |
| 204 | GB/T 5312-2025 | Seamless steel tubes and pipes for ship |
| 205 | GB/T 6479-2013 | Seamless steel tubes for high-pressure chemical fertilizer equipments |
| 206 | GB/T 6728 | Cold forming hollow sectional steel for general structure |
| 207 | GB/T 8162 | Seamless steel tubes for structural purposes |
| 208 | GB/T 8163-2018 | Seamless steel pipes for liquid service |
| 209 | GB/T 9711 | Petroleum and natural gas industries—Steel pipe for pipeline transportation systems |
| 210 | GB/T 9808-2023 | Seamless steel tubes for drilling |
| 211 | GB/T 983-2012 | Welding consumables — Covered electrodes for manual metal arc welding of stainless and heat-resisting steels – Classifications, MOD |
| 212 | GB/T 9948-2013 | Seamless steel tubes for petroleum cracking |
| 213 | GB/T 9948-2025 | Seamless steel tubes and pipes for petrochemical and chemical facilities |
| 214 | GB/T12459-2017 | Steel Buttwelding Pipe Fittings – Types and Parameters |
| 215 | GB/T13401-2017 | Steel Buttwelding Pipe Fittings – Technical Specifications |
| 216 | GB/T17395—2024 | Dimensions,shapes,masses and tolerances of steel tubes |
| 217 | GB/T5135.20 | Automatics prinkler system—Part20: Coating steel pipe |
| 218 | IEC 60981:2019 | Extra heavy-duty electrical rigid steel conduits |
| 219 | ISO 10763 | Hydraulic fluid power — Plain-end, seamless and welded precision steel tubes — Dimensions and nominal working pressures |
| 220 | ISO 21809-1 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems Part 1: Polyolefin coatings (3-layer PE and 3-layer PP) |
| 221 | ISO 21809-11:2019 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems Part 11: Coatings for in-field application, coating repairs and rehabilitation |
| 222 | ISO 21809-2:2014 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 2: Single layer fusion-bonded epoxy coatings |
| 223 | ISO 21809-3:2016 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 3: Field joint coatings |
| 224 | ISO 21809-4:2009 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 4: Polyethylene coatings (2-layer PE) |
| 225 | ISO 21809-5:2017 | Petroleum and natural gas industries — External coatings for buried or submerged pipelines used in pipeline transportation systems — Part 5: External concrete coatings |
| 226 | ISO 2560:2020 | Welding consumables — Covered electrodes for manual metal arc welding of non-alloy and fine grain steels — Classification |
| 227 | ISO 3074 | Steel tubes for automotive purposes specification |
| 228 | ISO 3183 | Petroleum and natural gas industries — Steel pipe for pipeline transportation systems |
| 229 | ISO 559 | Steel tubes for water and sewage 作废 |
| 230 | ISO 8535 | Diesel engines-Steel tubes for high-pressure fuel injection pipes – Part 1: Requirements for seamless cold-drawn single wall tubes |
| 231 | ISO 11960 | Petroleum and natural gasindustries -Steel pipes for use ascasing or tubing for wells |
| 232 | ISO 3581 | Welding consumables |
| 233 | JIS C 8305:1999 | Rigid steel conduits |
| 234 | JIS G3478 | Carbon steel tubes for general machine structural purposes |
| 235 | JIS G3429 | Seamless steel pipe for high pressure gas container |
| 236 | JIS G3441 | Alloy steel tubes for machine purposes |
| 237 | JIS G3444 | Carbon steel tubes for general structure |
| 238 | JIS G3445 | Carbon steel tubes for machine structure purposes |
| 239 | JIS G3452 | Carbon steel pipes for ordinary piping |
| 240 | JIS G3454 | Carbon steel pipes for pressure service |
| 241 | JIS G3455 | Carbon Steel Pipe for Pressure Service |
| 242 | JIS G3456 | Carbon steel pipes for high temperature |
| 243 | JIS G3458 | Alloy Steel Pipes |
| 244 | JIS G3459 | Stainless steel pipes |
| 245 | JIS G3460 | Steel Pipes for Low Temperature Service |
| 246 | JIS G3461 | Carbon steel boiler and heat exchanger tubes |
| 247 | JIS G3462 | Alloy steel boiler and heat exchanger tubes |
| 248 | JIS G3463 | Stainless steel tubes for boiler and heat exchanger |
| 249 | JIS G3464 | Steel Heat Exchanger Tubes for Low Temperature Service |
| 250 | JlS G3465 | Seamless steel pipe for drilling |
| 251 | JIS G3467 | Steel Tubes for Fired Heater |
| 252 | JIS G3466 | Carbon steel Square for general structural purposes |
| 253 | JIS G3472 | Electric Resistance Welded Carbon Steel Tubes for Automobile Structural Purposes |
| 254 | JIS G3473 | Carbon Steel Tubes Cylinder Barrels |
| 255 | JIS G3474 | High Tensile Strength Steel Tubes for Tower Structural Purposes |
| 256 | JIS G4051 | Carbon steel for Machine Structural Use |
| 257 | JIS G3429 | Seamless Steel Tubes for High Pressure Gas Cylinder |
| 258 | JIS G3465 | Seamless Steel Tubes for Drilling |
| 259 | JIS G4805 | Seamless Pipe High Carbon Chromium Bearing Steel Pipe |
| 260 | ASTM A450 | General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes |
| 261 | ASTM A530 | General Requirements for Specialized Carbon and Alloy Steel Pipe |
| 262 | EN 10296-1 | Welded circular steel tubes for mechanical and general engineering purposes. Non.alloy and alloy steel tubes |
| 263 | DIN 2462 | Seamless tubes of stainless steel |
| 264 | DIN 17456 | General Purpose Seamless Stainless Steel Tubes |
| 265 | DIN 17458 | Seamless Circular of Austenitic Stainless Steel Tube |
| 266 | EN 10216-5 | Stainless Steel Seamless Tubes for pressure purposes |
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