detailed info about High Wear Resisitance Seamless Concrete Pump Elbow Material: High Manganese Degree: 90d,45d,30d,20d,15d,10d etc Model: DN125(5”),DN150,DN175 Inter wall thickness: 8mm Outer wall thickness: 3mm Application: All kinds of concrete pump Product Parameter of High Wear Resisitance Seamless Concrete Pump Elbow: High Wear Resisitance Seamless Concrete Pump Elbow Type Singe Elbow Double Elbow Model DN125 DN150 DN175 DN125 Material Casting Steel ,ST52 Inside  40Cr Outside Size R275*90° R275*90°+110 36° F2000 R275*90° R275*90°+110 R275*45° R275*90°+211 R400*30° A3000 R275*45° R275*90°+211 R275*25° R275*90°+411 R400*45° 471B R275*25° R275*90°+411 R275*20° R275*90°+424 R400*30° 571B R275*20°