On this page 6 sections
Key features of welded pipes
Welded Pipes by material
Welded Pipes are available in the following grades. Select a grade for specifications and sizes.
Stainless Steel
- SS 201 Welded Pipes
- SS 202 Welded Pipes
- SS 304 Welded Pipes
- SS 304L Welded Pipes
- SS 304H Welded Pipes
- SS 309 Welded Pipes
- SS 309S Welded Pipes
- SS 310 Welded Pipes
- SS 310S Welded Pipes
- SS 316 Welded Pipes
- SS 316L Welded Pipes
- SS 316Ti Welded Pipes
- SS 317 Welded Pipes
- SS 317L Welded Pipes
- SS 321 Welded Pipes
- SS 321H Welded Pipes
- SS 347 Welded Pipes
- SS 347H Welded Pipes
- SS 409 Welded Pipes
- SS 430 Welded Pipes
- SS 441 Welded Pipes
- SS 904L Welded Pipes
- Duplex 2205 Welded Pipes
- Super Duplex 2507 Welded Pipes
- SS 253 MA Welded Pipes
- SS 254 SMO Welded Pipes
Nickel Alloys
- Inconel 600 Welded Pipes
- Inconel 601 Welded Pipes
- Inconel 625 Welded Pipes
- Inconel 718 Welded Pipes
- Incoloy 800 Welded Pipes
- Incoloy 800H Welded Pipes
- Incoloy 800HT Welded Pipes
- Incoloy 825 Welded Pipes
- Monel 400 Welded Pipes
- Hastelloy C22 Welded Pipes
- Hastelloy C276 Welded Pipes
- Nickel 200 Welded Pipes
- Nickel 201 Welded Pipes
Alloy Steel
Welded Pipes: sizes, finishes and testing
- Size range
- NPS ⅛" to 48" and larger (DN 6 – DN 1200+), schedules 5S to XXS, single random, double random and cut lengths
- Finish
- Annealed & pickled, bright annealed, mill finish, black, varnished, galvanised or 3LPE / FBE coated (by material)
- Ends
- Plain end (PE), bevelled end (BE, ASME B16.25), threaded (NPT / BSP), grooved
Testing & documents
- Chemical and mechanical (tension, flattening, flare/bend) tests
- Hydrostatic test or non-destructive electric test (UT/ET) on each length
- Dimensional and visual inspection
- Intergranular corrosion (stainless), impact (low-temperature), hardness (sour service) when specified
- PMI and third-party inspection on request
- EN 10204 3.1 certificate; 3.2 with third-party inspection
Comparisons
Other pipes types
Frequently asked questions
What sizes are welded pipes available in?
NPS ⅛" to 48" and larger (DN 6 – DN 1200+), schedules 5S to XXS, single random, double random and cut lengths.
Which specifications cover welded pipes?
Common specs: ASTM A312 (welded), A358, A53 Type E, API 5L.
What are welded pipes used for?
Tighter wall-thickness tolerance. Modern welded stainless pipe is annealed after welding and fully tested, and it offers tighter wall tolerance and lower cost than seamless, especially from about NPS 4" upward.
Which materials are welded pipes available in?
Stainless steel, nickel alloys, carbon and alloy steel and non-ferrous metals, depending on the specification. See the material list above.