Alloy 20 flange: 1.Size:1/2"-60" 2.Material:Carbon steel,stainless ... .Standard:ANSI,ASME,JIS,DIN,BS Alloy 20 flange: Details of the ProductHebei Hanghao High-pressure Flange Pipe Fitting Manufacturing Co.,LtdProductsAll kinds ... customer’s requirements or normal deliveryAuthentification codeISO 9001:2008 Alloy 20 Flange