On this page 6 sections
Key features of erw pipes
- High-frequency welding without filler
- Economical for carbon steel up to about NPS 24"
- Used for water, gas, structural and line pipe
- Seam normalised and ultrasonically tested
ERW Pipes by material
ERW Pipes are available in the following grades. Select a grade for specifications and sizes.
Stainless Steel
- SS 201 ERW Pipes
- SS 202 ERW Pipes
- SS 304 ERW Pipes
- SS 304L ERW Pipes
- SS 304H ERW Pipes
- SS 309 ERW Pipes
- SS 309S ERW Pipes
- SS 310 ERW Pipes
- SS 310S ERW Pipes
- SS 316 ERW Pipes
- SS 316L ERW Pipes
- SS 316Ti ERW Pipes
- SS 317 ERW Pipes
- SS 317L ERW Pipes
- SS 321 ERW Pipes
- SS 321H ERW Pipes
- SS 347 ERW Pipes
- SS 347H ERW Pipes
- SS 409 ERW Pipes
- SS 430 ERW Pipes
- SS 441 ERW Pipes
- SS 904L ERW Pipes
- Duplex 2205 ERW Pipes
- Super Duplex 2507 ERW Pipes
- SS 253 MA ERW Pipes
- SS 254 SMO ERW Pipes
Nickel Alloys
- Inconel 600 ERW Pipes
- Inconel 601 ERW Pipes
- Inconel 625 ERW Pipes
- Inconel 718 ERW Pipes
- Incoloy 800 ERW Pipes
- Incoloy 800H ERW Pipes
- Incoloy 800HT ERW Pipes
- Incoloy 825 ERW Pipes
- Monel 400 ERW Pipes
- Hastelloy C22 ERW Pipes
- Hastelloy C276 ERW Pipes
- Nickel 200 ERW Pipes
- Nickel 201 ERW Pipes
Alloy Steel
ERW 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 erw 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 erw pipes?
The product specification for the grade, with dimensions to the relevant ASME or EN standard.
What are erw pipes used for?
Economical for carbon steel up to about NPS 24". It's the most common welded carbon steel pipe for water, gas, structural and line-pipe uses (API 5L HFW / ERW, A53 Type E, IS 1239, IS 3589).
Which materials are erw pipes available in?
Stainless steel, nickel alloys, carbon and alloy steel and non-ferrous metals, depending on the specification. See the material list above.