1)Material: seamless alloy steel
2)Standard: API Spec 11B
4)coupling diameter: 7/8"
Application / Models
We produce the whole API sucker rod coupling line, including sucker rod coupling, subcoupling, polished rod coupling,slim hole(SH) coupling,class SM coupling. Spraying Metal coupling combines top quality steel with a cold rolled thread that increase fatigue resistance. Our T and SM coupling are manufactured from high quality steel pipe in accord with API standard.
Yantai Yunsheng Petroleum Machine Accessories Co. Ltd., founded in 2005, is a professional manufacturer of API Spec 11B Sucker Rod Couplings, including Spray Metal coupling, class T coupling, Sub OD coupling, with various type of size.