... ,BS,DIN,JIS,GB Materail:Stainless&Carbon Steel duct pipe fittings elbows/ Pipe Elbow Size Seamless elbow:1/2"~24" DN15~DN600Welded ... 78"DN150~DN1900Wall thickness2mm~150mmBending radiusR=1D~10DProduct angle0°~180°Pipe elbows are mainly used for connecting two pipes or tubes ... can provide short radius elbows and long radius elbows.Usually,pipe elbows are made of carbon steels,alloy steels,stainless steel ...