Features for semitrailers: 1.The material of beam is 16Mn steel with its space frame structure, reasonable connecting points and balance in both strength and rigidity 2.The parts of vehicle are processed by blast cleaning Assemble craft: the wheel and axle are assembled by the advanced assemble machine 3.The chassis frame has the characteristics of large capacity and stable structure 4.Suspension system: can be choosen by the customer. 5.All axles load in balance and the tie bar system can adjust the axle space, so that it can effectively avoid the exceptional attrition 6.The shaft card is the solid casting, of which the lower shaft card is the patent product 7.Brake system: safe and reliable dual loop breaking air brake is used 8.The energy storage sub-pump has stop brake function 9.The reliable relay valve is selected 10.Axle: the axle of good quality produced by famous producer such as YEUK, 13TON TYPE