Marine Manhole

  • Application

Used for the ship watertight and oiltight manhole cover.

  • Type
Type Clear size mm
A 450×350,600×400,800×600
B1 450×350,600×400,800×600
B2 800×400
C1 450×350,600×400,800×600
C2 800×400
D1 450×350,600×400,800×600
D2 800×400

manhole

  • Specification for type A manhole
No. Clear size
mm 		l1,l2,l3,b1,b2,b3
mm		 S
mm		 Bolt
dia x q’ty 		Weight
kg
1 450×350 450,470,570,350,370,470 4
6
8
10		 M20x16 23.2
30.8
36.9
45.8
2 600×400 600,620,720,400,420,520 6
8
10
12		 M20x20 48.8
59.2
69.3
79.6
3 800×600 800,820,920,600,620,720 8
10
12
14		 M20x26 52.4
65.8
78.2
90.2

marine manhole

  • Specification for type B manhole
No. Clear size
mm 		l1,l2,l3,b1,b2,b3
mm		 S
mm		 Bolt
dia x q’ty 		Weight
kg
1 450×350 450,470,570,350,370,470 4
6
8
10		 M20x16 28.9
33.8
37.2
41.2
2 600×400 600,620,720,400,420,520 8
10
12
14		 M20x20 49.5
55.6
61.3
67.6
3 800×600 800,820,920,600,620,720 12
14
16
18		 M20x26 57.2
75.2
82.8
89.9
4 800×400(oval) 800,830,930,400,430,530 12
14
16
18		 M20x24 56.8
63.2
69.2
76.2

marine manhole

  • Specification for type C manhole
No. Clear size
mm 		l1,l2,l3,b1,b2,b3
mm		 S
mm		 Bolt
dia x q’ty 		Weight
kg
1 450×350 450,470,650,350,370,550 10
12
14		 M20x16 116.6
121.6
128.6
2 600×400 600,620800,400,420,600 10
12
14		 M20x20 136.1
142.2
149.5
3 800×600 800,820,1000,600,620,800 12
14
18		 M20x26 171.5
182.6
206.8
4 800×400(oval) 800,930,1010,400,530,610 12
14
18		 M20x24 102.8
118.2
146.2

marine manhole

  • Specification for type D manhole
No. Clear size
mm 		l1,l2,l3,b1,b2,b3
mm		 S
mm		 Bolt
dia x q’ty 		Weight
kg
1 450×350 450,570,620,350,470,520 14
16
18		 M20x16 73.1
81.6
90.2
2 600×400 600,720,770,400,520,570 14
16
18		 M20x20 83.6
88.8
94.8
3 800×600 800,900,970,600,720,770 14
18
20		 M20x26 108.4
120.6
149.8
4 800×400(oval) 800,930,980,400,530,580 14
16
20		 M20x24 89.4
102.5
127.8

 
 

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