... field1,Outer Diameter:73mm-630mm2,Thickness:5-30mm3,Application:For line pipe in petroleum and natural gas4,Quality:First grade5,Others ... -30mmSurfaceBlack/brightBrand NamePetroleum, oil , gas, chemistry, electrical power, metallurgy,etcPackingBundles,sea-worthy or wooden cases, or as customers' requestDelivery TimeWithin 5 ...