Sucker Rod Couplings

The Sucker Rod Couplings we supplied are manufactured in compliance with API 11B. Both of the Class T and Class SM couplings combine top quality steel with a cold rolled threads that increases their fatigue resistance capability.

A well controlled and service proved Anti-galling treatment is applied to all the couplings.

We offer a complete line of API sucker rod couplings, including sucker rod couplings, sub couplings, and polished rod couplings, with full size and slim hole.

Specifications	5/8”	3/4”	7/8”	1”	1 1/8”
Coupling Class	T / SM
Base material	Per API 11B or Chinese equivalent
Size type	Full size, slim hole, crossover
Mech. Property	Meet with API 11B requirement

 

 

 

 

Advantages of the SM, Sprayed Metal Sucker rod couplings

The Sprayed Metal Sucker Rod Couplings are coated with nickel base metal material and re-melted. Thickness of the SM coating is 0.01-0.02 in per side, Hardness is 595HV200 minimum.

The SM coupling features mirror like surface finish, low friction factor and high corrosion resistance property.

 

Availability and Part No. of the grade T & SM Sucker Rod Couplings

Sucker Rod Coupling
Size		P.N.
5/8"	Full Size	58MF
	Slim Hole	58MS
3/4"	Full Size	68MF
	Slim Hole	68MS
7/8"	Full Size	78MF
	Slim Hole	78MS
1"	Full Size	88MF
	Slim Hole	88MS
1.1/8"	Full Size	98MF
	Slim Hole	98MS

Polish Rod Coupling
Size		P.N.
5/8"	Full Size	58MFP
	Slim Hole	58MSP
3/4"	Full Size	68MFP
	Slim Hole	68MSP
7/8"	Full Size	78MFP
	Slim Hole	78MSP
1"	Full Size	88MFP
	Slim Hole	88MSP
1.1/8"	Full Size	98MFP
	Slim Hole	98MSP

Sub Coupling
Size		P.N.
5/8"*3/4"	Full Size	5868MF
	Slim Hole	5868MS
3/4"*7/8"	Full Size	6878MF
	Slim Hole	6878MS
7/8"*1"	Full Size	7888MF
	Slim Hole	7888MS
1"*1 1/8"	Full Size	8898MF
	Slim Hole	8898MS

 

 

 

 

 

Note: For detailed sizes of polished rod couplings and Sub Couplings, please refer to the API Specification 11B