Two types of coupling are available which meet API Specifications: Regular API Class T Coupling and Spray Metal Coupling for anti corrosion. The Deflection-proof and Abrasion-proof Sucker Rod Coupling is my special product, which is processed with some special technology, coated a layer of abrasion-proof, wear-proof and lessening friction coat. It can not only protect itself but also the rod, preventing and slowing down the wear. The coupling has many types and sizes, and it is made of good quality steel alloy 40Cr. It has three functions : wear proof, corrosion-resisting and reducing the friction.

API sucker rod coupling, class SM
1Material: AISI 5140 (40Cr),
2Standard: API Spec 11B
3Coat Thickeness: 0.01-0.02 in
4coupling diameter: 5/8 ", 3/4", 7/8", 1", 1-1/8"
5Basic Hardness: HRC 16-23 (HRA 58-62)

Surface hardness: HRC 55-62
6Metal coating hardness: 595 HV0.2
7Main specification of  PJ22FHSM coupling

    weight:0.74kg

    O.D.:1 13/16(46.04mm)

    Length:4in(101.6mm)