... DIN,JIS,BS,UNI,GB 3.Material:Carbon steel,Stainless steel,Alloy steel 4. Size:1/2"-48" 5.$0 ... etc 90°180°FlangesPL1/2”-48”Material: Carbon steel; Stainless steel; Alloy steel; Cast iron; etcSOWNSWBLIFCaps1/2”-48”Certificate: ISO9001; ... . The products are made of carbon steel, alloy steel and stainless steel. Other products are metal ripple compensators ... cooperate with us.3.Certificate Caster wheel