API 11b Class Sm Sucker Rod Coupling for Oil Well Drilling
Sucker Rod Couplings
Sucker Rod Couplings are manufactured from quenched and tempered alloyed steels. API 11B couplings are classified into two classes: Class T and Class SM (Spray Metal).
Class SM coupling has a spray-welded metal layer on the surface. The appearance is silver-white generally, the surface hardness is high, and the wear resistance and corrosion resistance are relatively good.
Compared with Class T couplings, Class SM couplings have the following features:
(1) High surface hardness and good wear resistance
According to SY/T 5029-2013, the surface hardness required for Class T couplings is HRA56~62, and the metal hardness of class of the spray welding layer of SM couplings is ≥595HV0.2.
(2) The surface finish is high. The surface roughness required for class T coupling is ≤ 3.2, and that of class SM coupling is ≤ 1.6
Our sucker rod couplings, reducer couplings, small wellbore couplings, spray welded couplings and polished rod couplings can meet the requirements of API 11B. We can also produce couplings of different classes according to the requirements of our customers.
Specifications
| Size |
5/8" |
3/4" |
7/8" |
1" |
1 1/8" |
1 1/2" |
| Class |
T / SM |
| Standard |
API 11B |
Class T Sucker Rod Coupling
Polished Rod Coupling
Polished rod coupling is designed to connect polished rod and sucker rod. Sucker rod coupling cannot be used to connect polished rod; polished rod coupling can be used to connect sucker rod.
Our Team
Zhengzhou Maierda Petroleum Equipment Co., Ltd., located in Central China, is a professional supplier of oil well equipment and tools.
Our factories have more than 15 years' experiences in the manufacturing of oil well equipment and accessories.
Our sales team has more than 10 years importing & exporting experiences in oil & gas industry.
Our Products
We are specialized in oil field equipment, tools and accessories including casing centralizers (bow spring, single piece, composite, stamped, positive, solid body, rigid, semi-rigid), tubing centralizers, sucker rod centralizers (guide), float equipment (collar, shoe), stage tools (collar), stop collars (ring), cementing plug, cement head, cement basket, couplings and crossovers (casing, tubing, sucker rod, polished rod), hammer unions, polished rod clamps, sucker rod, polished rod, pup joints, drill pipes, drill collars, etc.
We are committed to providing high-quality and cost-effective products and services to our customers.
Our Services
We guarantee and uphold the highest standards in customer service, client satisfaction, and quality product delivery in the oilfield industry.
Hope to have a good cooperation with you!
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