We make the integral type trailer axles beam, the typr as follow, "S13T","S15T","S16T","S20T","C13T". The material of the axles beam is high quality 20Mn2 seamless steel tube made by Tianjin steel tube Corp. We have plenty of experience for making military products. The integral type shell of axles beam is manufactured according to our advanced technology and researching with Shanghai Jiao tong University. It has reaturing of arsenal. Now, the"forming tube with hot extrusion" technology was patented by State Intellectual Property Office of P.R.C. The two top heads of the axle are made by "forming tube with hot extrusion" technology. The streamline of its metal is smooth and reasonable. Therefore, it can be avoided the surface of metal fiber amputating danger with the high temperature gyrating compressed technology,(Fuwa&＃039;s technology) such as good machine capability, great bearing capacity. The axles beam is processed by amending character, sand blasting for removing the oxidation layer, so the quality of surface is better. The axle is made by precision machine, It ensure the precision size tolerance and position tolerance. The two top heads of the axle are quenched for wearable. We guarantee our axle products according to the follow process. In the field of experimental stress analysis cover a wide range of the material. Static and dynamic testing using strain gauges and other sensors. Investigations into the residual stress states of structures and components, as well as fatigue life estimates of vehicles in particular, "Metal analysis", "rigidity test", "ultrasonic inspection, magnetism powder test", "working procedure inspection", "collectivity size test". The entire test is sure to the best quality. Our axles are already proved by Central of Nation vehicle quality surveillance and testing (Xiangfan). 100000 kilometer or one year limited warranty for our axle, other part is three mouths. If you meet the matter of the quality, we could exchange the part free