Product Description

API Sub coupling 1)Type: T&SM FS, SH 2)Coupling diameter: 5/8"*3/4", 3/4"*7/8", 7/8"*1", 1"*1-1/8" 3) Weight: 0.43-1.56 KG/Pcs 4)Material: AISI 5I40 5)Spray Material of SM Coupling :Ni60A Alloy Coating 6)Basic Hardness: HRC 16-23 7)Surface Hardness of SM Coupling: HRC 55-62 8)Hole rate of SM Coupling : <2% 9)Min. Hardness of the layer of SM Coupling: 595HV0.2 10) Operating Temperature: -1000~400? 11) Life: Class SM Sub Coupling > 180 days; Class T Sub Coupling > 90 days 12)Standard: API Spec 11B 13)Package: wooden case 14)Payment Terms: T/T Our New Products 1) SM Coupling with great bevel edge 2) Two-way Cambered Protection Coupling