stainless steel pipes fittings size:1/2"-80" material:stainless steel certificate:ISO9001 and bv stainless steel pipes fittings Stainless Steel ElbowStandardASME SA403,BS16.9,GB12459,EN,DIN,JISMaterial304,304L,310S ... ,Socket Welding Flange,Thread Flange,Screwed Flange,Lap Joint Stainless Steel Reducer StandardDIN 2527,2573,2576,2642,2633,JIS B2311,ASME 16.9Material304, 304L ...