Ship's similar hatch covers

Sudden similar manhole covers are used for access to rooms.
Type 1 - splash-proof steel (St).
Type 2 - water and gas-tight steel (St) and aluminium-magnesium alloy (AMg).

Depending on the method of closing we produce three types of Type II covers:
E - covers which are closed from outside and inside with handles;
F - covers, which are closed from outside with wing bolts;
G - covers which are locked from outside with a key and from inside with a handle.
Depending on the construction of the leaf and the type of closing we produce covers of the E type in three versions:
?? - covers having a blade with a stamping and individual wedge closure;
Ep.r - covers with flat blade and lever closure;
Ep.i - covers with flat blade, and closing - individual wedge.