40 cubic meter carbon steel oil semi-trailer, tank capacity: 40 cubic meters, tank body made of high-quality Q235 carbon steel plate, tank body 5mm, head 5.7mm, partition 4.2mm thick, single compartment, with one European standard tank mouth, one pneumatic aluminum alloy submarine valve, optional European standard system (1 API oil discharge valve outlet, oil and gas recovery, anti overflow probe, anti-static wire reel), standard carbon steel accessories, chassis configuration: with 3-axis 13 ton Guangdong Fuhua Bridge (two axles with ABS), 12 12.00R22.5 vacuum tires with ordinary steel rings, 16 ton brake pads, 50 traction pins, 28 ton single action support legs, and others made according to factory standard.