Aluminum Manhole Cover - Marine Hatch Cover - Hi-sea

Aluminum Manhole Cover

/uploads/image/20180823/Sunk Manhole Cover for Boats.jpg

Aluminum Manhole Cover

Sunk Manhole Cover for Boats is a kind of cover with shield. It is installed in sunken coaming. There are two shapes of this cover. One is long circle, the other is oval. It can be used as watertight, weathertight, and oiltight manhole cover, but cannot be used to boiler. Made of aluminium, it meets the requirements of ISO5892 and CB/T19-2001. Many kinds of covers can be supplied by us. If you are interested in our products, please contact us for detailed information.

Drawing & Specifications:

A: manhole cover with coaming

B: flat manhole cover

C: sunk manhole cover


type clear size l1  l2 l3 b1 b2 b3 s bolt weight kg
mm dia qty
A 450*350 450 470 570 350 370 470 4 M24 20 7.3
6 9.7
8 12.2
10 14.6
500*400 500 520 620 400 420 520 6 24 11.3
8 13.8
10 16.6
12 18.4

type clear size l1  l2 l3 b1 b2 b3 s bolt weight kg
mm dia qty
B 450*350 450 470 570 350 370 470 4 M24 20 9.5
6 10.8
8 12
10 13.2
500*400 500 520 620 400 420 520 6 24 12.3
8 13.7
10 15.2
12 16.7

/uploads/image/20180904/Drawing of Sunk Manhole Cover for Boats.jpg

type clear size l1  l2 l3 b1 b2 b3 s bolt weight kg
mm dia qty
C 450*350 450 560 600 350 460 470 6 M24 20 15.8
556 456 8 17.8
552 452 10 21.6
500*400 500 606 650 400 506 520 8 24 20.6
602 502 10 25.1
598 498 12 29.6


Certificate Options: CCS, NK, DNV.GL, LR, ABS, IRS, BV, RMRS, RINA


Figures of Products:

/uploads/image/20180905/Embeded Manhole Cover for Boats.jpg

/uploads/image/20180904/Sunk Manhole Cover for Boats with Shield.jpg

Contact with us now

Our mail: hs@cqhisea.com

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