... , testing the pressure of steel pipe (ERW pipeand SSAW pipe) Description: Hydrostatic tester It uses for steel pipe, PLC control, Computer display. ... To test the pressure of steel pipe accordingly. For ERW pipe and SSAW pipe. Consit of: Foundation, tension beam, test head, ... be designed according to your request): Range of steel pipe and wall thickness as below:30-114mm X 3.0 ...