SHIJIAZHUANG OHANAUTO PARTS CO,LTD.

The company strictly according to the national standard and professional organization, raw materialsused in the production of high-grade 21-4 N, 4 Cr10Si2Mo etc, with the special steel valve surfacingwelding. spray welding. liquid nitriding. polishing, grinding, CNC processing it surface such advancedprocessing means. Raw materials used in high-grade 21-4 N, 4 Cr10Si2Mo etc valve special steel, has fully automatic grinding small head.automatic lock clip grinding machine, automatic small head quenching. automatic external circular and cone grinding. valvesurfacing, spray welding, liquid nitriding. polishing. numerical control, numerical control lathe intentional grinding coneadvanced processing technology and equipment, with metallographic physical and chemical, constant temperaturemeasuring measure the room and other advanced testing equipment.

Manufacturing engine valves