API 5B Tubing and casing thread Standard: ASTM,JIS,EN,ISO, ... 2mm-200mm API 5B Threading, gaging and thread inspection of casing, tubing and line pipe thread ASTM A519 50B40 50B44 ... ,20MnNb6, 16Mo3, 8MoB5-4,14MoV6-3, 10CrMo5-5, 13CrMo4-5,10CrMo9-10, 11CrMo9-10,25CrMo4, 20CrMoV13-5-5,15NiCuMoNb5-6-4, X11CrMo5+1,X11CrMo5+NT1 ... IF ANY INQUIRY! API 5B Threading, gaging and thread inspection of casing, tubing ...