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  • ERW/HFW Pipes

Overview of ERW/HFW Pipes

ERW pipe is the acronym for electrical resistance welded steel pipe, and HFW pipe represents high-frequency welding (HFW) steel pipe & tube. The pipes are made from steel coil and the weld seam runs parallel to the pipe. And it is one of the most versatile tools in agriculture, industry, and construction activities. The manufacturing process of ERW steel pipe includes HFW. ERW involves low, medium, and high-frequency welding, while HFW is especially for high frequency electric resistance welding pipe.

Features of ERW/HFW Pipes

  • 1

    Compared with other forms of welded pipes, ERW pipes are greater in strength

  • 2

    Better performance than common welded pipes and lower cost than seamless pipes

  • 3

    The production process of ERW pipes is far safer than that of other welded pipes.

Parameter of ERW/HFW Pipes



AS1163 / 1074, BS1387, ISO65, JIS G3444 / 3445 / 3454 / 3452

API 5CT H40 J55 K55 L80-1 N80 P110

ASTM A53 GR.A / GR.B, A252 GR.1 / GR.2 / GR.3

C250 / C250LO / C350 / C350LO / C450 / C450LO

EN10219 / 10210 / 10217 / 10255

P195GH / P235GH / P265GH

STK290-STK540, STKM11A-STKM14C, STPG370 / STPG410 / S195T

S235JRH, S275JRH, S275J0H, S275J2H, S355J0H, S355J2H, S355K2H


Outside Diameter: 21.3-660mm

Wall Thickness: 1.0-19.05mm

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