... connection 2. Standard parts. 3. Alloy Quick Coupling of Rubber Hose Application:Suit dry or wet shotcrete machineor ... conection.This is the consumption components of Shotcrete machine.Quick Coupling,coupling lathe,coupling part Casting: investment casting ,precision ... ASTM, BS,JCSI.Piece numbers: small, medium and large series.Process: cast, machining, turning, milling, drilling, thread cutting ...