_ Tubing coupling commodity classification and HS commodity codes

Details - tubing coupling: (NU, EU) steel grade: J55, N80, L80, P110 Specifications: 1.9 "; 2-3 / 8"; 2-7 / 8 "; 3-1 / 2" ; 4 ";, 4-1 / 2"; casing collar: (SC, LC, BC) steel grade: J55, N80, L80, P110 Specifications: 4-1 / 2 "; 5"; 5 -1/2 ";, 6-5 / 8"; 7 ";, 9-5 / 8";, 13-3 / 8 "; common specifications are: 2-3 / 8"; 2-7 / 8 "; 3-1 / 2"; etc., commonly steel grade has: J55 N80 L80 company also short tubing, tubing joints become buckle oil casing thread protectors caps. Welcome to your call! Oil Pipe Co., Ltd. Tianjin Dali Pu Xu Xiaoyan 18222899656