Class T coupling for sucker rod are manufactured as per API Spec 11B standard for the thread cttting,we plant tap extruded thread in room temperature by reseating materical rather than cutting material in making coupling threads.This craft dresults in a compressive stress at the root of the thread,giving better maximum strength and overcame the traditional weak point of cut-thread couplings.

Our class T coupling is using AISI 5140/1045 to manufacture .The coupling is coated using phosphate chemical treatment.The couplings are available in full size,slim hole and Sub OD.

Sub Coupling, or Change Over Coupling, used for connecting two sizes of sucker rod, also including SM 

Coupling, T Coupling, KD Coupling, and UHS Coupling, with specification of Full Size, and Slim Hole. 

The Permit Work load is 80KN, and the Damage load is 238KN.

Our main products:
Drill Equipment, Well control system,OCTG, Well head tools, camps,drill bit and spray head,drilling instruments, cementing, oil mining equipment, water well drilling rig  and petrochemical products,Electric oil-submersible pump unit, QYYEQ Submersible power cables and so on.

 Dongying Qixiang Import & Export Co.,LTD(DYQX Petro company) follow the principle of "quality first, science and technology innovated, people oriented",, it benefits from the convenient running, high efficiency, swift reaction, experienced experts and the advanced management. In a meanwhile, it has about 50 sub-contractors to cooperate all over the country, and it always sticks to good faith, strictness, specialty, innovation, also satisfactory service.our products have already been exported to USA, South America, Africa, Middle East, Russia and some other countries (regions). 

Our Service Objective:  People-O riented, Quality firstly and Best service.

Welcome to Visit DYQX petro.

Dongying Qixiang Import&Export Co.,Ltd

Address:North 2nd Road,Number 352,Dongying Zone, Dongying City, Shandong province, China.

Skype:eve.liu06211988    

Mobile:0086-18554639639   

whatsnap:0086-13290276176

 Web:   &  http://qixiangpetre.en.china.cn