The technology process of the ball our factory manufactured as below: Process degisn, Raw material purchasing, Heat treatment, forging, Rough machining, Heat treatment, Semi-finish machining, Surface hardening treatment, Finish machining, Grinding, Finished Product, Stock. Ball surface hardening treatment with coating tungsten carbide, chorme carbide or stellite 20/12, Ni60, Ni55 etc to meet the severe working condition required by the industrial pipeline, such as high temperature resistance maximun to 800℃, high pressure resistanc upto 140Mpa, corrosion resistance, brushing resistance as well as wear resistance.
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