... W.T.: 2mm-200mm API 5B Threading, gaging and thread inspection of casing, tubing and line pipe thread ASTM A519 50B40 ... , 1017, 1018, 1019,1020, 1021, 1022, 1025, 1026,1030, 1035, 1040, 1045, 1050,1518, 1524, 1541, 1330, 1335,1340, 1345, 3140 ... US IF ANY INQUIRY! API 5B Threading, gaging and thread inspection of casing, tubing and line pipe thread