1)Features: spray welding in general based on the hoop increases the exteral chamfer at both ends, greatly reducing the contact with the pipeline, but also by friction, abrasion resistance, extended collar and tubing life.
2)Meterial：International 40Cr, AISI5140(seamless alloy steel)
3)Standard: API Spec 11B
4)Grade: SM  and T
5)Type: full size
6)Size：5/8"; 3/4"; 7/8"; 1"; 1-1/8"

 

We can also make the sucker rod couplings following the customer's requirements.

 

We are pleased to offer you the high quality products and excellent service.