Raw Material:Carbon Steel,Alloy Steel,Aluminum,Brass,Bronze,Copper,Cast iron,Stainless Steel,Nylon,Teflon,ABS,AcrylicRaw Material Type:Hot Rolled H Beams,Square Welded Tubing,Rectangular Welded Tubing,Round Welded Tubing,Hot Rolled Channels,I Beams,Unequal Angles,Equal Angles,Flats,Hexagons,Squares,Round Bars,etcSurface Roughness:RMS Roughness..