Yantai Yunsheng Petroleum Machine Accessories, Co., Ltd , funded in 1997, presently is one of biggest enterprises producing double protection sucker rod couplings inside China. We now have more than....
Yantai Yunsheng Petroleum Machine Fittings Co., Ltd. is a modern high-tech enterprise specialized in manufacturing petroleum machine accessories--sucker rod coupling . The company can itself research....
Yantai Yunsheng Petroleum Machine Accessories, Co., Ltd , funded in 1997, presently is one of biggest enterprises producing double protection sucker rod joint inside China. Our company has fixed....
5/ 8" * 3/ 4" FS API Sub coupling 1 Type: T& SM 2 Material: Carbon steel AISI 5I40 or AISI 4135 3 SM Coupling Spray Material Ni60A Alloy Coating 4) Basic Hardness: HRC 16-23 5 SM Coupling....
5/ 8" * 3/ 4" SH API Sub coupling 1 Type: T& SM 2 Material: Carbon steel AISI 5I40 or AISI 4135 3 SM Coupling Spray Material Ni60A Alloy Coating 4) Basic Hardness: HRC 16-23 5 SM Coupling....