... rubber, the third layer thickness 3. Mm SUS304 support core, the fourth layer the reinforced nylon fibre reinforcement ... can be more widely series pump to partly replace centrifugal pump of screw pump,, submersible pump, mud pump and impurities pumps, application ... structure, small volume, light weight, raplace singly; 2: high transmission efficiency; 3: smooth running, low noise; 4: long service ...