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 |
Application
● Construction / building materials steel pipe
● Steel structure
● Scaffolding pipe
● Fence post steel pipe
● Fire protection steel pipe
● Greenhouse steel pipe
● Low pressure liquid, water, gas, oil, line pipe
● Irrigation pipe
● Handrail pipe
Detail drawing
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ASME SA192 Boiler Pipes/A192 Seamless Steel Pipe
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ASTM A106 Grade B Seamless Pipe
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A106 GrB Seamless Grouting Steel Pipes for Pile
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SA210 Seamless Steel Boiler Tube
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Fire Sprinkler Pipe/ERW Pipe
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ASTM A53 Grade A & B Steel Pipe ERW Pipe
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API5L Carbon Steel Pipe/ ERW Pipe
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A106 Crosshole Sonic Logging Welded Tube
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A 36 Cross Hole Sonic Logging (CSL) Tubes
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ASTM A53 Crosshole Sonic Logging (CSL) Welded Pipe
