4-inch ERW Steel Pipe

4-inch ERW steel pipe supplied by Winsteel Group Limited. Winsteel Group is a leading steel pipe supplier in China. We have the LSAW pipe, SSAW pipe, ERW pipe, and Seamless Steel pipe factories. And we provide all kinds of pipes all over the world!

ERW is suitable for welding, grooving, threading and bending. They are available in all the common sizes, up to 24-inch. It’s also available in a variety of combinations: ASTM A53 ERW Type E, Grade B can be purchased in plain end, roll groove, threaded and coupled, or threads only (one end or both).

Description of ERW Supply Range:

Product:ERW (Electric Resistance Welded ) Steel Pipe
Application:Used for Oil/Gas/Water transmission, Machinery Manufacturing
Size:O.D.: 21.3 mm ~ 609.6mm (1-inch ~ 24-inch)
W.T.: 1.0 mm ~ 20.0 mm
Length: 5.8M/6.0M/11.8M/12.0M
Standard:API 5L PSL1 & PSL2
ASTM A53; A500; ASTM A252
AN/NZS 1163; AN/NZS1074
EN10219-1; EN10217-1
JIS G3466
Pipe End:square ends (straight cut, saw cut, and torch cut).
or beveled for welding, beveled.
Surface:Lightly oiled;
Hot dip galvanized;
Electra-galvanized, Black;
Bare, Varnish coating/Anti rust oil;
Protective Coatings (Coal Tar Epoxy,  Fusion Bond Epoxy, 3-layers PE).
Test:Chemical Component Analysis;
Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation);
Technical Properties (Flattening Test, Bending Test,  Hardness Test, Impact Test);
Exterior Size Inspection;
Hydro-static Test;

Production Process for ERW steel pipe:  

1. Uncoiling — 2. Leveling — 3. End cutting — 4. End shearing welding — 5. Supercoil accumulator — 6. Edge cutting — 7. Ultrasonic detection — 8. Forming — 9. Electric induction welding — 10. Ultrasonic detection for weld seam — 11. Medium frequency heat treatment — 12. Air cooling — 13. Water cooling — 14. Sizing — 15. Flying cutting — 16. Flush-out — 17. Cropping — 18. Flattening testing — 19. Straightening — 20. End facing and bevelling — 21. Hydrodynamic testing — 22. Ultrasonic detection for weld seam — 23. Ultrasonic detection for pipe end — 24. Visual and dimensions inspection — 25.Weighting and measuring — 26. Marking — 27. Coating — 28. Pipe-end protection — 29. Bending — 30. Shipping

Based on the customers requirements we can manufacture ERW pipes and tubes of different size and shape. We have a very large production capacity of ERW pipes and tubes.

ERW pipes and tubes are used in various engineering purposes, fencing, scaffolding, line pipes etc.

Packing of 4-inch ERW Steel Pipe

  1. Plastic plugs in both ends;
  2. Hexagonal bundles of max. 2,000kg with several steel strips;
  3. Two tags on each bundle;
  4. Wrapped in waterproof paper;
  5. PVC sleeve, and sackcloth with several steel strips, Plastic caps.

4-inch ERW Steel Pipe in Bundle

Different sizes of pipes have different pieces in one bundle. Please see the photos of 4-inch ERW steel pipe in Bundle.

Usually we make small sizes of pipe in bundle like this. It is convient for loading and shiping.

Total 19 Pieces ERW steel pipe in one bundle.

All of our factories have certificates, such ISO 9001, ISO 14001, OHSAS 18001. And API 5L PSL 1 & PSL 2 certificate, API 5CT, PED, CPR certificate. And we accept 3-party inspection point by clients.

We are assure all our products in good quality.