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​You are here: Home >> Products >> Marine Outfitting Equipment >>Marine Covers >> Marine Manhole Cover
1) Manhole Cover With Coaming ,Model A                                                                                                                                              Inquiry 
Marked sample Long circular manhole cover with coaming which nominal size 600*400, cover plate thichness 10 .
Marked as MANHOLE COVER A 600*400-10 CB/T19-2001
Model Nominal size(mm) L1 L2 L3 B1 B2 B3 S Fastener Weight(kg)
Diameter Quantity
A 450*350 450 470 570 350 370 470 4 M20 16 23.2
6 30.8
8 36.9
10 45.8
600*400 600 620 780 400 420 520 6 20 48.8
8 59.2
10 69.3
12 79.6
800*600 800 820 920 600 620 720 8 26 52.4
10 65.8
12 78.2
14 90.2
Stub is stainlesss steel SUS304 nut material could be steel, brass, stainless steel, as user's option.
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2) Flat Type Manhole Cover Model B1                                                                                                                                                         Inquiry 
Marked sample Long circular flat type manhole cover which nominal size 600*400, cover plate thickness 10.
Marked as MANHOLE COVER B1 600*400-10 CB/T19-2001
Model Nominal size L1 L2 L3 B1 B2 B3 S Fastener Weight(kg)
Diameter Quantity
B1 450*350 450 470 570 350 370 470 4 M20 16 28.9
6 33.8
8 37.2
10 41.2
600*400 600 620 720 400 420 520 8 20 49.5
10 55.6
12 61.2
14 67.6
800*600 800 820 920 600 620 720 12 26 67.2
14 75.2
16 82.8
18 89.9
B2 800*400 (Oval) 800 830 930 400 430 530 12 24 56.8
14 63.2
16 69.2
18 76.2
Stub is stainlesss steel SUS304 nut material could be steel, brass, stainless steel, as user's option.
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3) Embedded Type Manhole Cover With Shield Model C1                                                                                                            Inquiry 
Marked sample Oval sunk manhole cover with shield which nominal size 600*400, cover plate thickness 12 .
Marked as MANHOLE COVER C1 600*400-12 CB/T 19-2001
Model Nominal size L1 L2 L3 B1 B2 B3 S Fastener Weight(kg)
L*B mm mm Diameter Quantity
C1 450*350 450 470 650 350 470 550 10 M20 16 116.6
12 121.6
14 128.6
600*400 600 720 800 400 520 600 10 20 136.1
12 142.2
14 149.5
800*600 800 920 1000 600 720 800 12 26 171.5
14 182.6
18 206.8
C2 800*400 (Oval) 800 930 1010 400 530 610 12 24 102.8
14 118.2
18 146.2
Stub is stainlesss steel SUS304 nut material could be steel, brass, stainless steel, as user's option.
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4) Long Circular Sunk Type Manhole Cover With Shield Model D1                                                                                       Inquiry 
Marked sample: Oval Sunk type manhole cover without shield which nominal size 600*400, cover plate thickness 14 .
Marked as: MANHOLE COVER D1 600*400-14  CB/T 19-2001
Nominal size L1 L2 L3 B1 B2 B3 S Fastener Weight(kg)
Diameter Quantity
450*350 450 570 620 350 470 520 14 M20 16 116.6
16 121.6
18 128.6
600*400 600 720 770 400 520 520 14 20 136.1
16 142.2
18 149.5
800*600 800 920 970 600 720 770 14 26 171.5
18 182.6
20 206.8
800*400 (Oval) 800 930 980 400 530 580 14 24 102.8
16 118.2
20 146.2
Stub is stainlesss steel SUS304 nut material could be steel, brass, stainless steel, as user's option.
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5) Stud Mounted Manhole Cover Model A                                                                                                                                                Inquiry 
Marked sample: Model A Ballast liquid tank manhole cover with check hole which size 600*400
Marked as: Manhole cover  6CB/T3981-2008  A600*400-10
Model Clear size L1 B1 L2 B2 T Stud (Substance) Stud (Check hole) Weight(kg)
L*B mm Diameter Quantity Diameter Quantity
A 600*400 720 520 620 420 6 M20 20 M16 8 68.4
8 75.3
10 81.8
12 26 89.1
800*600 920 720 820 620 8 86.9
10 95.8
12 104.3
14 112.2
16 121.2
18 130.1
20 138.5
B 640*400 720 520 620 420 6 62.6
8 71.9
10 80.7
12 90.3
800*600 920 720 820 620 8 83.5
10 94.7
12 105.5
14 115.9
16 126.1
18 169.5
20 146.8
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6) Handhole Cover A Type                                                                                                                                                                                  Inquiry 
A2 B2 B1 B A1 A R1 R t Stud Weight(kg)
Diameter Length Quantity
A 200 590*590 48.5 55.5 270 95 110 5 M12 22 12 5.7
8 25 6.9
AL 320 490*590 35.3 40.2 320 120 135 5 M12 22 12 7.3
8 25 9.2
AR Φ500 Φ590 39.3 47.2 390 145 160 5 M12 22 16 9.6
8 25 12.2
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7) Circular Handhole Cover B Type                                                                                                                                                              Inquiry 
D D3 D2 D1 t Stud Weight(kg)
Diameter Length Quantity
150 220 190 160 5 M12 22 8 4.6
200 270 240 210 5 M12 22 12 6.2
8 28 7.6
200 320 290 260 5 M12 22 14 8.3
8 28 10.2
200 370 340 310 5 M12 22 16 11
8 28 13
150 420 390 360 8 M12 28 16 15.7
Marked sample: Circular handhole cover D=200, t=5.
Marked as: HANDHOLE COVER  B 200*5 CB*283-84
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