... ,JIS,EN,ISO,BS,GOST,API O.D.: 5mm-1500mm W.T.: 2mm-200mm API 5B Threading, gaging and thread inspection of ... -G, STO-H, STO-J, STO-N,STO-C, STO-D, STO-EJIS G3441 SCr 420TK, SCM415TK,SCM418TK, SCM420TK,SCM430TK, SCM435TK ... DO NOT HESITATE TO CONTACT US IF ANY INQUIRY! API 5B Threading, gaging and thread inspection of casing, tubing and line ...