... Precision casting,machining, surface treatment ISO9001:2000 OEM service Pipe flangeNon-standard products making according to your drawings or samplesWeifang ... are applied in the work shop. Material: aluminium, bronze, brass, copper, stainless steel, carbon steel, alloy steel, gray iron, ductile iron ... samples, drawings or description.Your enquiries are fully appreciated. Pipe flange of OEM service