Meterial : Metal Structure : G Clamp Connection : Welding Detailed Product Description : Material : Alloy DN80 DN100 DN125 DN150 DN175 DN200 DN220 FOR : ZOOMLION SANY SCHWING AND SO ON Name Clamp Coupling Size 2inch¡ª8inch other size and types unpon request Type Metric , Heavy duty Material 20# steel Technic Precision casting Application Connection of Concrete Pump and Pump Truck Pipeling Serving brands of concrete pump and pump truck Schwing , Sany , PM , CIF , Zoomlion and so on Concrete Pump Clamp Coupling :special exporting package