... used to store Crude oil or other petroleum products.It used in oil refinery, oil field, oil and other industries. About us We specialized in ... (2).The storage of gasoline, kerosene, light diesel oil, crude oil and aromatics of tank need to install the respiration valve( ... diesel oil and wax oil and heavy oil tank, needs to set vent (4) Manhole, light hole and the cleaning hole(not necessary) crude oil ...