Polished Rod Couplings (Class T, SM, UHS)

Description
Polished rod couplings are used to connect polished rod and sucker rod.

Features
The internal thread of polished rod couplings matches with its external thread. Polished rod couplings can be used to connect polished rod with sucker rod, but sucker rod couplings cannot be used to connect polished rod with sucker rod.

Advantages
We are capable of manufacturing all classes of couplings specified in API Specification 11B. Based on years of manufacturing experience, our technical team uses cold drawn tube as the raw material of sub couplings and polished rod couplings. This allows guaranteed quality as well as high cost efficiency of our API polished rod couplings.

Parameter

Full Size Polished Rod Coupling
Size (in)	Coupling O.D. W (mm) (+0.13, -0.25)	Length L (mm) (+1.57, -0.00)	Nominal Diameter of Thread (in)	Vanish Cone	Hardness (HRA)
5/8"	38.10	101.6	15/16"	9°	56-62
3/4"	41.28		1-1/16"
7/8"	46.00		1-3/16"
1"	55.60		1-3/8"
1-1/8"	60.33	114.3	1-9/16"

Slim Hole Polished Rod Coupling
Size (in)	Coupling O.D. W (mm) (+0.13, -0.25)	Length L (mm) (+1.57, -0.00)	Nominal Diameter of Thread (in)	Vanish Cone	Hardness (HRA)
5/8"	31.75	101.6	15/16"	9°	56-62
3/4"	38.10		1-1/16"
7/8"	41.30		1-3/16"
1"	50.80		1-3/8"