... , by punching6mmSpurn waterAluminum Alloy/5mm, 20 inch manhole6mmParts for TankManhole cover3 sets of 400mm/Aluminum Alloy manhole fixed ... in trapezoid formLights and wire24V, 7 coils with lights for parking, reverse, instruction, head lamp and end lampChassisMain ... BeamsHeavy duty and extra durability designed;Opting for high tensile steel Q345B, welded by automatic Submerged-Arc ...