... cleaning steel pipe, tube, rod etc. Roller conveyors delivery. Multi-functions Shot Blasting MachineShot-blasting Machine for cleaning steel pipe ... of customer is available.With Professional Test Equipments in our company, we can test electric system and parts in various ... Voltage and Hertz worldwide . The test range is 0 - 600V, 45 - 500HZ. Passed the test, it can ensure the machine working ...