API Class SM coupling
1 Type: SM 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: AISI 5I40
5 Spray Materialï¼Ni60A Alloy Coating
6 SM Thicknessï¼0.01-0.02in
7 Basic Hardness: HRC 16-23
8 Surface Hardness: HRC 55-62
9 Hole rate: ï¼2%
10 Min. Hardness of the layer: 595HV0.2
11 Operating Temperature: -1000~400â
12 Life: > 180 days
13 Standard: API Spec 11B
14 Package: wooden case
15 Payment Terms: T/T
Our New Products
1) SM Coupling with great bevel edge
2) Two-way Cambered Protection Coupling