All the products could be customized, the material , the dimensions, and the surface treatment are various, the material can be steel, steel alloy,stainless steel, aluminum, brass,bronze,copper, titanium, tungsten, carbon fiber,casting iron, casting grey steel, forging blank, casting blank,plastic ......; the dimensions are 1-3800mm in length and 1-1000mm in diameter; the surface treatments can be plating,powder coating, e-coating,painting, oxided, anodization, carboniztriding etc.