... (oil,gas,water) liquid transport; shipbuilding, construction, steel structure; city piping system etc.PackingPacked in bundle,wrapped ... with steel strips and waterproof clothOffice BuilingCANGZHOU RIZE STEEL PIPE CO.,LTD1.Surface Treatment: ... industry, electric power, metallurgy thermodynamic fields, water supply engineering, steam heating, hydroelectric power station and long ...