with a good reputation both at home and abroad Stable quality and excellent performance
Sucker rod is among our leading products absorbing technical essence from home and abroad in accordance with API SPEC 11 B.
API Class SM sucker rod 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 or AISI 4140.
5)Spray Material Ni60A Alloy Coating
6)SM Thickness 0.01-0.02in
7) Basic Hardness HRC 16-23
8)Surface Hardness HRC 55-62
9)Hole rate less than 2%
10)Min. Hardness of the layer 595HV0.2
11) Operating Temperature -1000~400°C
12) Life > 180 days
13)Standard API Spec 11B
14)Package : wooden case,500 pcs per box or 1000 pcs
15)Payment Terms T/T
API spray metal sucker rod couplers
