Development Trade Co. Ltd. - China

Our company is a professional production of engineering machinery hydraulic cylinders, industrial cylinders, pneumatic products and accessories and the piston rod, the companies have entered a 20-year history, the production of hydraulic cylinder are mainly exported to the country's brand-name enterprises and foreign enterprises to engage in assembly is mainly used bulldozers, excavators, rollers, sanitation trucks and other hydraulic products above. I have produced all the piston rod 40 with the Daye Masaki quality carbon steel and 45 #, chromium layer without pinholes, flawless. Chrome-plated rod matrix through the IF quenching, strength, hardness, good fatigue resistanceAfter low-temperature tempering the effective elimination of stress increased abrasion resistance. OD tolerance f7,  

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chromium thickness 30-50um, hardness of HV900 or more, 40cr in the high-frequency hardness HRC58-62, high-frequency form quenched depth of 1-1.5MM, IF quench depth of the table outside the 3-5MM, chrome-plated rod surface roughness better than Ra0.3um, 45 # high-frequency surface hardness of HRC50-55, quenched and tempered HB250-280. Packaging Paper plus films plus a remote wooden, near the Paper plus film. Are not satisfied you can retire, replacement. My company produces regular, high-frequency, IF, quenching, quenching IF chrome rods. We will give the money with the lowest price and best quality. Welcome your call!