... :1/2"-80" material:stainless steel certificate:ISO9001 and bv stainless steel 316l tee Stainless Steel ElbowStandardASME SA403,BS16.9,GB12459,EN ... holder, manhole cover, stub,clamp,union ,valve etc Stainless Steel Flange StandardsASTMA182,ANSI B16.9, ANSI B16.28, EN10253-2 ... Welding Flange,Thread Flange,Screwed Flange,Lap Joint Stainless Steel Reducer StandardDIN 2527,2573,2576,2642,2633,JIS B2311, ...