For people in and out of the manhole cover is installed on the top of the tank car, tank, check the goods and the condition of the tank of natural observation, can be directly in the general environment for loading of the goods is also the most convenient loading port, the one-click quick-opening manhole covers design is simple, fast, high reliability, better prices, has become a material car will match product.

Manhole cover suitable medium: powder material, bulk cement, stone ash

Manhole cover design temperature :-40 degrees to 120 degrees

Manhole cover main material: carbon steel

Manhole cover sealing material: modified rubber