Yunsheng is the manufacturer offering API sucker rod couplings in Shandong China. All the rod couplings are produced in fully accordence with API Spec 11B standard and manufactured with high quality Carbon steel AISI 5140. Our sucker rod couplings are very cost-effective, including class SM sucker rod coupling, class T sucker rod coupling, Sub sucker rod coupling, Full Size sucker rod coupling, Slim Hole sucker rod coupling. They are available in 5/8", 3/4", 7/8 ",1"and 1-1/8".

Both-way protection globoidal SM Coupling
1) Material: Seamless Alloy Steel 40Cr (AISI 5140)
2) Standard: API Spec 11B
3)Grade:SM.
4) Size:5/8"; 3/4";7/8"; 1"; 1-1/8"
5)Features: It can be used to vertical wells and inclined shafts. This kind of coupling has substaintially improved its functions of abrasion of resistance, corrosion resistance and reducing friction. What’s more, its ground power consumption can be effectively reduced, the accident prevention de noticeably improved and the production rate and the utilization rate of the well also will be greatly enhanced.

We are the specialize manufacturer and can supply the high quality products in low price with the hope to establish a long-term relationship with you.

Partner with us, I promise you will be satisfied with our high quality products and excellent service.

Waiting for your inquiry and purchasing order.