... tool forging as: shaft sleeve, crank shaft, gear ring, screw set, bolts and nuts, We are professional manufacturer of oil equipment forging in ... of producing 5T forging unit. We pass the ISO9001 in 2001 and see quality as the root of a company ... technology, strict management, excellent services. Our product are widely used in boiler pressure vessel, oil industry, chemical field, shipbuilding, pharmacy, ...