Hebei Haiyuan Pipe Fittings Co., Ltd specializes in manufacturing Seamless Pipe, Steel Butt Weld Fittings and Forged Flanges, which are widely used in the field of water, oil, gas and chemical industries. Our products details are as follows: 1. Carbon Steel Seamless Pipe of ASTM A106/A53 GR.B according to ASME B36.10 2. Carbon Steel Butt Weld Fittings of ASTM A234 WPB according to ANSI B16.9, ANSI B16.28, DIN2605, DIN2615,...