... structure to test the steel tube, the whole process is controlled and tested by industry computer and PLC, has features of ... mode, steel bone frame big clearance outer envelop, compulsive sealing. Voltage controlled, DC24V,DC24V Air supply,pressur 0.4-0.6kg,flowout ... station,4 station,1 station modle.4,Control modeIt is controlled and monitored by computer +PLC, operated at automatic/manual mode ...