We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
API Oil Steel Pipe casing Couplings
Specifications:
Coupling
1. API 5CT and 5B
2. Color: Green, red, white
3. Thread Type: EUE, NUE, STC, LTC, BTC
4. Steel grade: J55, K55, N80, P110
5. Grade for L-80. N-80, J-55 and K-55 P-110
6. Casing joining coupling and tubing coupling
7. STC. LTC. BTC, Premuin connection
Hardness: Class-T, Class-SM, substrate hardness56-62 HRA; C
Lass-SM coating hardness≥ 595HV200
Sprayed coating hardness: 0.254-0.508mm
Mechanical properties: Class-T, Class-SM;
Tensile strength≥ 655MPa
Surface roughness:
1, Class-T: ≤ 1.6μ M
2, Class-SM: ≤ 0.2μ M
Sucker Rod Coupling
Sucker Rod Coupling are manufactured as per API Late EPT Specification 11B. For the thread cutting, the Company is using cold form rolled by displacing rather than by removing of material for making the coupling thread. The thread rolling cutting results in a compressive stress at the root of the thread, giving maximum strength to the traditional weak point of cut-thread couplings.
Our Class T coupling is using AI EPT 5140 to manufacture. The coupling is coated using phosphate chemical treatment or black oxide as per customer’s request. For Class SM coupling, the spray metal is a specified hardening process and is applied on the base metal.
The couplings are available in full size, slim hole. Also, combination couplings are available for different
Diameters (sub-coupling) for bothClass T and Class SM couplings.
We recommend changing sucker rod couplings after three make-ups, provided the connection threads have been inspected and deemed acceptable for reuse.
We – EPG Group the bigge EPT gearbox & motors , vee pulleys, timing pulleys, couplings and gears factory in China with 5 different branches. For more details: Mobile/whatsapp/telegram/Kakao us at: 0086~13083988828 13858117778 0571 88828
The use of original equipment manufacturer’s (OEM) part numbers or trademarks , e.g. CASE® and John Deere® are for reference purposes only and for indicating product use and compatibility. Our company and the listed replacement parts contained herein are not sponsored, approved, or manufactured by the OEM.
