hongda tielishi truck-mounted concrete pump are adopting special heavy duty truck chassis of FAW’s JIEFANG BRAND to afford an elegant and original outline and comfortable driving with strong horsepower,economical oil consumption,reliability and endurance. Power system adopts 6-cylinder diesel engine of international famous brand –GERMANY DEUTZ(or CHINA’s famous brand engine),has steady and reliable property,and is equipped with automatic accelerator for economical fuel consumption. Hydraulic system adopts GERMANY REXROTH’s oil pump and AMERICA VICKERS’s control valve which match and combine perfectly. PLC computer control adopts such brand electric parts as SIEMENS,LG,SCHNEIDER,etc. All operations can be realized by short-distance-control and wired remote-control. Wired remote-control and control box are two separate operating devices to ensure reliability and safety. S-shaped reversal valve,hard alloy eyeglass and incising ring are equipped with rubber spring which can auto-compensate clearances between end faces to ensure a proper sealing property. Mixing can rotate forward and backward,conduct fast and slow operation,and remove the aggregate blocking problem timely. Big-diameter transport cylinder affords good suctionability and large pumping discharge. Pumping capacity can be infinitely controled to match with various output quantities’ needs. The machine has such functions as positive pump,negative pump,and touch-move,etc. while delivery pipe cleaning and concrete piston changing are both handy. High-pressure cleaning system is set to facilitate vehicle cleaning. The lubrication of bucket and concrete cylinder are both auto-lubricating and lubrication occurs at pumping happening. Main oil cylinder sealing parts are of AMERICA PARKER while concrete cylinder inner wall is thickened chronium coat to successfully ensure 200 million m³ with no problem. High-low-pressure switch valve designed with patent greatly reduces fluid resistance of main hydraulic system to improve system useful power by 20%.