KWK Steel is one of best carbon and stainless seamless steel tube manufacturer and exporter in China. Our process include cold drawing, cold rolling, hot rolling and hot expanding. Our size range for seamless is as below: OD:5-813mm WT:0.25-120mm Standard we could supply is as below: ASTM: A53, A106, A192, A179, A210, A213, A519, A312, A790, A268, API 5L, API 5CT, etc. DIN: DIN17175, DIN1629, DIN2440, DIN2391, DIN2393, etc. EN: EN10210, EN10255, EN10216, EN10297, EN10305. Contact us for more information

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