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
Grade API 5L GR.B, X80 PSL1 PSL2
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
Sizes Outside Diameter: 21.3-660mm
Wall Thickness: 1.0-19.05mm

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