... 2008,ASTM A501-98 ,ASTN A519-98, JIS G3441-1994 2.Applicant Seamless steel tubes for liquid serviceGrade 10,20,Q295,Q345 ... Stardand GB/T8163-2008,ASTM A53-98 ASTM A192 ASME S192 JIS ... ,ASTM A161-946. ApplicantSeamless steel pipe for Petroleum CrackingGrade:10,20,12CrMo,15CrMo,1Cr2Mo,1Cr5MoStardandGB9948-2006,JIS G3441-19887. ApplicantSeamless ...