... JIS, DIN, ASTM,BS OEM service prop stand of a bicyclewe can offer you casting partsIf you are interested in ... such as drawing, specification, chemical composition and so on, we would like to provide you OEM service.1 ... steel,non-ferrous,grey iron,ductile cast iron and so on 3.Process: lost wax process, soluble glass process ... center,plating,Heat Treatment,ect............... prop stand of a bicycle