... -1994 2.Applicant Seamless steel tubes for liquid serviceGrade 10,20,Q295,Q345 Stardand GB/T8163-2008,ASTM A53-98 ... Seamless steel pipe for low and Medium pressure BoilerGrade:10,20 StardandGB3087-2008,ASTM A179,ASTM A192,ASTM SA179,SA192, ... ,ASTM A161-946. ApplicantSeamless steel pipe for Petroleum CrackingGrade:10,20,12CrMo,15CrMo,1Cr2Mo,1Cr5MoStardandGB9948-2006,JIS G3441-19887. ApplicantSeamless ...