... J55 N80 L80 C90 T95 P110API 5L A25 A B X42 X46 X52 X60 X65 X70 X80 UsageJapan JISUSA ... GradeASTM A53 Grade A, Grade BASTM A106 Grade A, Grade B, Grade CASTM A161 Low Carbon Steel (LC), Grade T1ASTM ... A423 Grade 1, Grade 2ASTM A500 Grade A, Grade B,Grade C, Grade DASTM A501 Grade A, Grade BASTM A519 ... Grade A, Grade BASTM A795 Grade A, Grade B PLEASE DO NOT HESITATE TO CONTACT US IF ANY INQUIRY! API 5L ...