... 630mm 3. ASTM,DIN,JIS,BS satanda Company Name : Liaocheng Xinglong Seamless Tube Manufacturing Co.,LtdNamesa179 seamless steel pipes Brand nameXinglong (ourself ... G3454,JIS G3455,JIS G3456,JIS G2461,DIN 1629,DIN 1630,DIN2440, DIN2448,DIN 17175,GB/T8162-2008,EN10204,EN10216-1, ... Electrical Power, Coal, Machinery, Low and high-pressure boiler, hydraulic prop and so on.InvitationWelcome to Our two ...