... stainless steel certificate:ISO9001 and bv stainless steel 180 degree elbow Stainless Steel ElbowStandardASME SA403,BS16.9,GB12459,EN,DIN, ... etc.Sizes1/2''~50''(DN10~DN1200)Wall ThicknessSch5X~SchXXSBend Degree45°,90°,180°TypeElbow, reducer, cross, pipe holder, manhole cover ... Flange,Welding Neck Flange,Blind Flange,Socket Welding Flange,Thread Flange,Screwed Flange,Lap Joint Stainless Steel Reducer ...