Pup Joint OD: 1.9''- 4-1/2'' End Type:NU & EU ... L80-9Cr/13Cr P110 C95 Specification: API 5CT&5B Pup Joint To date, more and more clients, from China to Russia ... Asia, Middle East, Africa, Europe, American continent, have selected PUP JOINT, which enjoy a great reputation both at home and abroad ... . pup joint: 1) OD: 1.9"~4-1/2" 2) Grade: J55 ...