| we can supply carbon steel flangeHere are brief introduction of our company:Cangzhou Yongwang Pipeline Manufacturing Co., Ltd. Founded in 2000, the company has passed ISO9001: 2000 quality system certification, is a pressure pipe components manufacturing units registered security companies, for the State Power Corporation, China National Petroleum Corporation, China Petrochemical Group members of the network of parts suppliers. (1)Special design available according to requirement(2) anti-corrosion and high-temperature resistant with black painting(3) All the production process are made under the ISO9001:2000 strictly | 
