API Class SM coupling
1ú¬Type: SM FS and SH coupling
2ú¬Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"
3)Weight: 0.41-1.29 KG/Pcs
4ú¬Material: AISI 5I40
5ú¬Spray Materialú¦Ni60A Alloy Coating
6ú¬SM Thicknessú¦0.01-0.02in
7) Basic Hardness: HRC 16-23
8ú¬Surface Hardness: HRC 55-62
9ú¬Hole rate: ú+2%
10ú¬Min. Hardness of the layer: 595HV0.2
11) Operating Temperature: -1000~400íµ
12) Life: > 180 days
13ú¬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.