butt weld fittingd, welded & sanitary fittings,elbows,tees,reducers,cresses,caps,flanges,bends,lap joints stub ends, Detailed Product Description1.name: flange2.Size:From 1/2" to 24" (Seamless pipe fittings). From 1/2" to 48" (Seam pipe fittings)3.Wall thickness: Sch5-Sch10.Sch20.Sch40.Sch804.Standard: ISO, SNSI, JIS, DIN, GB/T12459,GB/T13401,ASME B16.9.SH3408 SH3409, HG/T21635,HG/T21631,SY/ ...