Marine Flat Manhole Cover:
Marine Flat Manhole Cover:
Standard: CB/T19-2001
Marine Manhole Cover is used for manhole on the oil tanks, water tanks, voil tanks and other tanks on various shipes. It is fixed on the falt positions on the hold bottom, deck and bulkhead.There are Type A,B,C & D. The shape can be round, oval, square.
Technical data:
Model
Nominal Size
L
L1
L2
B
B1
B2
S
Bolt
Weight
LxB
Diamter
Quantity
kgs
B1
450x350
450
470
570
350
370
470
4
M20
16
28.9
6
33.8
8
37.2
10
41.2
600x400
600
630
720
400
420
520
8
20
49.5
10
55.6
12
61.2
14
67.6
800x600
800
820
920
600
620
720
12
26
67.2
14
75.2
16
82.8
18
89.9
B2
800x400 (Oval)
800
830
930
400
430
530
12
24
56.8
14
63.2
16
69.2
18
76.2
