... For pipe connection 2. Standard parts. 3. Alloy Quick Coupling of Rubber Hose Application:Suit dry or wet shotcrete machineor other ... machine's pipe conection.This is the consumption components of Shotcrete machine.Quick Coupling,coupling lathe,coupling part Casting: ... heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS,JCSI.Piece numbers: small, medium and large ...