... SW BL PL LJ etc Steel Flange ItemSteel FlangeMaterialCarbon Steel/Stainless Steel/Alloy Steel.StandardGB,JIS,BS,DIN.ANSI/ASTM /API,NF ... 160, 150LBS-2500LBS ,5K-40K and so on .Sealing surfaceFF ,RF, LJ, FM ,RTJ,RJ ,MALE ,FEMALE and so on Applicationpetroleum ... : SOP, BIND, SOH,Puressure: 1K, 2K, 5K, 10K, 16K, 20K, 30K, 40KMaterial: carbon steel SS400, stainless steel SUS304, SUS316Coating : rust-proof ...