... -200mm API 5B Threading, gaging and thread inspection of casing, tubing and line pipe thread ASTM A519 50B40 50B44 ... 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 ... Grade A, Grade BASTM A795 Grade A, Grade B PLEASE DO NOT HESITATE TO CONTACT US IF ANY ...