Std Ref.:API 5CT 5B ISO9001,2008 Grade:J55,K55,N80-1,N80-Q,L80,C90,P110 Size:tubing1.9"to4-1/2",from4-1/2"to13-3/8" Product Name: Tubing Pup JointS (pipe fitting pup joint, pipe fitting)Standard Reference: API spec 5CTSize: From 2 3/8" to 4-1/2''Grade: J55, K55, N80-1, N80-Q, L80, P110 N80Type: NU, EUThread Type: Tubing round thread. Dimensions and their tolerances of tubing round-thread as per ...