Basic material: Steel alloy 40Cr (AISI 5140, HRA 56-62); API SPEC 11B specification manufacture; Inside diameter: 27.43mm(error bound: 0~+0.25mm); Outside diameter: 41.3mm(error bound: -0.25~+0.13mm). Casted alloy layer process on the surface has the function of wear-proof, corrosion-resisting and reducing the friction, protect both the coupling and the rods
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|Business Type:||Tubes & Tube Fittings|
|Company :||Yantai Yunsheng Petroleum Machine Accessories Co Ltd|
|Address :||Shengshuizhuang Village,Binhai Office,Laishan District,Yantai City,264003,China|