... , 16Mn,Q345GB6479-200018-530*3-40Fertilizer making equipment and pipe lineLow and mediun pressure boiled pipe10,20GB3087-199910-530*2 ... pipeGr..BAPI5 L/CT21.3-914*1.5-120Carrying gas,water or oil in the industries of petroleum and ... :Transparent oil or black painting anti-corrosion or 3PEApplication:Natural gas, petroleum, chemical industry, electric power, metallurgy thermodynamic fields, water ...