China 90 Degree Butt Weld Seamless Carbon Steel ASTM A234 Wpb B16.9 / 16.25 / 16.49 Carbon Steel Pipe Fittings Weld on Pipe Cap, Find details about China Pipe Cap, Steel Pipe End Cap from 90 Degree Butt Weld Seamless Carbon Steel ASTM A234 Wpb B16.9 / 16.25 / 16.49 Carbon Steel Pipe Fittings Weld on Pipe Cap