... ,ISO ,IDF,DIN,GB,BS ,3A connection :welding 1. name :stainless steel 180 degree clamp elbow2. material : SUS 304, SUS 316L3. standards ... . Material quality: SUS304, SUS316LStandard: DIN/SMS/ISO/IDF/3A/RJT/DS/BS/BPESpecification: DN15mm~150mm or 1/2"~4"Connection mode ... widely used in food, drinks, beer, pharmacy and dairy industry. stainless steel 180 degree welding elbow