Hebei Yadu Pipeling Equipment Group Co.,Ltd.which is established in 1983, is a professional manufacturer of all kinds of steel pipe fittings of high, middle and low pressures. The products of the company are widely applied in the pipeline engineering of the industries of petroleum, chemical industry, spinning, metallurgy, electric power, medicine, food, shipbuilding, paper making, etc. The company has passed the authentication of the ISO9002 Quality System in May, 1999 and acquired the ...