Cement semi-trailer

i want to number 5 buy semi-trailer to transport bulk cement load of 50 tons
ali that the specifications are as follows
1- 50 ton behemoth
2- iron outer body thickness of 4 mm
3- dots motor german 4 cylinder
4- joust pump german 2 bar (dolphins)
5- valves 4 inch aluminum, cement
6- number of 3 x 18-ton