The sucker rod couplings are used for connecting sucker rods, polished rods and sinker bars. Material of the couplings is high quality carbon steel or alloy steel, which are conform to and exceed the requirements of API Specification 11B. The main types of Sunrise Petro rod couplings include sucker rod couplings, polished rod couplings and sub-couplings.
The main types of Sunrise Petro rod couplings include sucker rod couplings, polished rod couplings and sub-couplings. The Sucker rod coupling has same box thread size in both ends. The polished coupling is designed to connecting polished rod and sinker bars. The sub-coupling is also called cross over coupling. It has different box thread size in both ends.
According to different needs, Sunrise Petro provides users couplings under different processes. All of the three types have two surface treatment classes: class T and class SM. The class T stands for through-hardened and the class SM stands for sprayed metal. The outer diameter of the sucker rod couplings has FS(full size) and SM(slim hole) types.
According to surface of suck rod couplings, they can be divided into sucker rod couplings with smooth surface and sucker rod couplings with wrench square.
Specification
Material: high quality carbon steel or alloy steel, such as AISI 1045, AISI 4135.
Thread size: 5/8", 3/4", 7/8", 1"and 1-1/8".
Length: 4", 4.5" and 5".
Grade: T and SM.
Type: sucker rod coupling, polished coupling and sub-coupling.
Features
Good corrosion and wear resistance.
Black oxide coated for anti-galling and lubricating properties.
Automatic flame spray production minimizes the tolerance.
Application
The sucker rod couplings are used for connecting the sucker rod and sinker bars with the same dimensions. But it is not used in the polished rods, which may cause the fracture of the couplings.
The polished couplings are designed to connect the polished rod and sinker bars.
The sub-coupling is widely used for the connection of different sizes of sucker rod, pony rod and sinker bars.
Sunrise Petro can supply API Sucker rod including the common sucker rod& pony rod, polished rod and sinker bar. Based on API Spec 11B and SY / T 5029 specifications, Sunrise Petro also developed a series of special sucker rods suitable for different well conditions, especially under high corrosion and high load conditions for oil well.
Our technical staff is ready to provide assistance in selection and design.With inventory and field sales support in strategic location, we are ready to respond in a timely professional manner 24 hours a day.
