Origin	China
Brand Name	yunsheng
Material	Alloy
Technics	Forged
Type	Coupling

We produce many kinds of API sucker rod couplings, including Spraying Metal coupling (Class SM)and Common couplings(Class T). Our couplings has all types and sizes, made of good quality steel alloy (AISI5140). Our Class SM Couplings are the deflection-proof and abrasion-proof sucker rod coupling, which has three main functions: wear-proof, corrosion-resisting and reducing the friction. This is our characteristic products. Class SM Couplings are coated a layer of abrasion-proof and lessening friction of powder. Our T and SM coupling are all manufactured in accordence with API Spec 11B standard.

And we can also provide API sucker rod, pony rod, polished rod for you without any extra profit from our brotherhood company.

API Class SM sucker rod coupling
 1)Material: Seamless Alloy Steel 40Cr (AISI 5140)
 2)Standard: API Spec 11B
 3)Size: 5/8〞; 3/4〞; 7/8〞; 1〞; 1-1/8〞
 4)Smoothness: 3.1×10-3
 5)Coat Thickness(in): 0.01in ~ 0.02in
 6)Basic hardness: HRC 16-23
 7)Surface Hardness: HRA 58-62
 8)Intergrate intension(Mpa): 484
 9)Hole rate: <2%
 10)Min. Hardness of the layer: 595HV0.2
 13)Min. Tensile Strength: 655 Mpa
 14)Operating Temperature: -1000~400℃
 15)Life: > 180 days

OUR NEW SPECIAL PRODUCTS
Both-way Protection Globoidal Sucker Rod Coupling
Full Size Spray Metal Coupling with Big Chamfer

We are the special manufacturer, supply more excellent quality products in reasonable price , with the hope to build a long-term business relationship with you.

If any of our sucker rod coupling interests you,  please feel free to contact us at any time for further information!

Email: nancy[at]ytyunsheng[dot]com
MSN:yunsheng_nancy[at]hotmail[dot]com