Marine Aluminum Manhole Cover
Introduction
Marine aluminum manhole cover is a convenient access port for maintenance personnel,Some liquid tanks on ships and some compartments that are not normally accessed by personnel are provided with manhole covers for access by construction and maintenance personnel. The htach cover is fixed by many bolts and nuts, can be opened by turning the nuts.
Specifications of Marine Aluminum Manhole Cover
clear size L*B
L1
L2
B1
B2
S
Dia of fasteners
Qty of fasteners
weight kg
450*350
470
570
370
470
4
M20
16
28.9
6
33.8
8
37.2
10
41.2
600*400
620
720
420
520
6
20
49.5
8
55.6
10
61.2
12
67.6
800*600
820
920
620
720
8
26
67.2
10
75.2
12
82.8
14
89.9
800*400
830
930
430
530
12
24
56.8
14
63.2
16
69.2
18
76.2