Api 5ct Eue Nue Tubing Pup Joint Coupling 

API 5CT Tubing Casing couplings Product Description All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplingsare made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.     Paramater of sucker rod coupling perfomance:   API Class T sucker rod coupling   1)Type: class T, FS and SH coupling   2)Coupling diameter:  5/8 ",3/4",7/8",1",1-1/8"   3) Weight: 0.41-1.29 KG/Pcs   4)Material: Carbon steel AISI 5I40   5)Basic Hardness: HRC 16-23   6)Operating Temperature: -1000~400°C…