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ERW (Electrical Resistance Welded) pipes and HFW (High-Frequency Welded) pipes are types of welded steel pipes characterized by their welding processes. ERW pipes are created by rolling steel coils and welding them along the seam, while HFW pipes are produced using high-frequency electric resistance welding, which allows for faster and more efficient production.
| Grade | API 5L GR.B, X80 PSL1 PSL2AS1163 / 1074, BS1387, ISO65, JIS G3444 / 3445 / 3454 / 3452API 5CT H40 J55 K55 L80-1 N80 P110ASTM A53 GR.A / GR.B, A252 GR.1 / GR.2 / GR.3 |
| C250 / C250LO / C350 / C350LO / C450 / C450LOEN10219 / 10210 / 10217 / 10255 | |
| P195GH / P235GH / P265GHSTK290-STK540, STKM11A-STKM14C, STPG370 / STPG410 / S195TS235JRH, S275JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H | |
| Sizes | Outside Diameter: 21.3-660mmWall Thickness: 1.0-19.05mm |
ERW pipes generally offer superior strength compared to other types of welded pipes.
They provide better performance and are more cost-effective than seamless pipes.
The production process for ERW pipes is considered safer compared to other welded pipe methods.
