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Latest company news about coupling


All of our couplings including API Class T Sucker Rod Couplings, API spray metal sucker rod couplings and API Change-Over Sucker Rod Couplingsare made full in line with API SPEC 11B, with the size range of 5/8”, 3/4”, 7/8”, 1”, 1-1/8”.



latest company news about coupling  0

Paramater of sucker rod coupling perfomance:


API Class T sucker rod coupling


1)Type: class T, FS and SH coupling


2)Coupling diameter: 5/8 ",3/4",7/8",1",1-1/8"


3) Weight: 0.41-1.29 KG/Pcs


4)Material: Carbon steel AISI 5I40


5)Basic Hardness: HRC 16-23


6) Operating Temperature: -1000~400°C

latest company news about coupling  1

Puyang Zhongshi Group Company Ltd was founded in 1996,which is the restructured enterprise of Central Plains oilfield branch
company of SINOPEC . The company registered capital is 6083 million yuan,with annual output value 200 million yuan, 580 employees,
including more than 160 technical and administrative staff. Oil machinery is our main products, the leading products include
pumping unit,subsurface sucker rod pump, wellhead (Christmas Tree), pressure vessels,drilling solid control series products and
cementing accessories, We had attained ISO 9001 in 1998 and API Certificates in 2002 .
We have 9 factories, more than 500 employees, and many kinds of production equipments.
We have certificates of API 5CT,6A,10D,11AX,11E, ISO 14001 and 9001.
With 10 years exporting experience,we have exported to more than 30 countries such as
America,Canada,Russia,Venezuela,Columbia,Thailand,Indonesia ,UAE,Saudi Arabia,Kazakhstan etc.