BASIC MATERIAL:AISI 5140
STANDARD: API SPEC 11B

      Yantai yunsheng Petroleum Machine Accessories Co.,Ltd., funded in 1997,prssently is one of the biggest enterprises producing double protection sucker rod joint inside china.

Our company is located in yantai shengquan industrial park.,beautiful seashore city. To north neibouring yantai port, to south next to yantai airport ,with beautiful scenery  and comfortable climate and convenient traffic. Furthermore, our company has fixed assets RMB 10,000,000.00 yuan, 150 employees, among them there are 26 engineers, it covers 30000 square meters and construction area is 15000 square meters .

     Main products: deflection-proof and abrasion-proof sucker rod joint ,and common  joint. Our company owns the advanced technology, especially about the alloy coat abrasion-proof sucker rod joint is on top level of the world.

      Our company’s products earned the good reputation from domestic clients such as shengli oil field and daqing oil field, and also have been exported to USA, Canada, peru ,argentina ,Kuwait ,india and indonisia .our company has obtained the ISO9001 international Quality Management certificate and API spec 11B Certificate.