... /T8163 ,ASTM A53,ASTM A106,API5L,DIN1629,JIS G3458,ISO 559 , DIN 17172 2 Material: 10#, 20#, Q295, Q345, 45#, ST4 20# Seamless pipe for ... liquid use :1 Standard: GB/T8163 ,ASTM A53,ASTM A106,API5L,DIN1629,JIS G3458,ISO 559 ... , South and southeast Asia, Australia, Africa15 Certificate:ISO9001, API 20# Seamless pipe for liquid use