High-Frequency Electric Welded (HFW) Pipes Pipe type: ERW welded steel pipe Material: Gr.B, X42, X52, X56, X60,X65,X70,X80, Size: 0.84"(21.3mm) - 24"( 610mm) Standard: API 5L / ASTM A53 / ASME B36.10 / ASTM A252 / AS1163 / AS1579 / ASTM A106B / ASTM A333 / ASTM A672 / ASTMA671 / ASTM A179 / AWWA C200 / API 5CT JIS G3101 / JIS G3452 EN10210 / EN10219 IPS-M-PI-190 KSD3507 / KSD3574 / KS D3566 / KS D3587 / KS D3571 / KS D3780 / DIN1630 /DIN1629 / GOST633 GB/T9711 / GB/T8163-2008 / GB/T8162-2008 / GB/T 3087 / GB/T 9948 / GB/T5310