API 5B Tubing Coupling/ Casing Coupling Dec. 5, 2011 1:15:17
API 5B Coupling
GRADE: J55, K55, N80-1, N80-Q, L80, C90, P110, Q125;
SIZE: Tubing coupling from 1.050" to 4-1/ 2" , Casing coupling from 4-1/ 2 to 20 ;
TYPE: NUE, EUE ( tubing coupling) , ....
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