... :SS Size:1/2"-40" Type:din flange Certificate:ISO9001:2000/2008/TUV forged din 2527 flangeMaterial:Stainless ... , 304,304L,316,316L,321 and so on.Standard:GB,JIS,BS,DIN.ANSI/ASTM ,NF and Non standard,Size:1 ... -2500LBS ,DIN2572,2502,2527,2631-2635,2642,2573,2566,etc.5K-40K and so on .Sealing surface : FF ,RF, LJ, FM ...