ERW Steel Pipe
ERW Steel Pipe
Introduction
OD | 21.3mm -660mm |
W.T | 1mm-20mm |
LENGTH | 0.5mtr-22mtr |
Surface | Fusion bond Epoxy coating, Coal Tar Epoxy, 3PE, Vanish Coating, Bitumen Coating, Black Oil coating as per customer’s requirement |
Standard | API5L, ASTM A53 GR.B, ASTM A178, ASTM A500/501, ASTM A691, ASTM A252, ASTM A672, EN 10217; API SPEC 5L ISO 3183 GB/T 9711.1 GB/T 9711.2 GB/T 9711.3 |
Ends | Square Ends (straight cut, saw cut) Beveled Ends |
Manufacturing Process
Electric Resistance Welded (ERW) pipe is manufactured by cold forming a flat steel strip into a rounded tube and passing it through a series of forming rollers to obtain a longitudinal seam. The two edges are then simultaneously heated with a high frequency current and squeezed together to form a bond. The longitudinal ERW seam does not require filler metal.
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