In terms of environmental protection, our company has investigated and resolved the adverse environmental factors in all departments to ensure that the Folding Anchor, Oil Tube Crane, Bow Thruster meet the standards of green products. We are committed to doing everything well and trying our best to meet customer needs. With sound finance, dedicated service and experienced work team, the company has won the trust, affirmation and support of domestic and foreign manufacturers and customers. We have always attached great importance to the cultivation of talents and the construction of high-tech talent team.
Marine ship cast iron sunk manhole hatch cover for ship is used for manhole on the oil tanks, void tanks and other tanks onboard various ships, it is fixed at flat positions of the hold bottom, deck and bulkhead. Marine ship cast iron sunk manhole hatch cover for ship is used for manhole on the oil tanks, void tanks and other tanks onboard various ships, it is fixed at flat positions of the hold bottom, deck and bulkhead.
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Main Material:
Cover: Carbon Steel Q235
Coaming: Carbon Steel Q235
Seal Ring: NBR
Bolt, Nut, Washer: Stainless Steel, Caron Steel , Copper
advantages:
l Security, prevent the cover being stolen
l No noise.
l High load-bearing
l corrosion resistance
l Safe
This marine manhole cover applies to the watertight and oiltight cover.
Material:
steel .
Certificates:
CCS, BV, ABS, GL,LR,RINA,NK ,etc.
Drawing of Sunk Manhole Cover:

Specification And Dimension Of Sunk Manhole Cover:
Type | Clear size | L1 | B1 | L2 | B2 | R | S | Fasteners | Weight(kgs) | |
L×B | ||||||||||
| DIA | QTY |
| |||||||
E | 530×430 | 656 | 556 | 698 | 598 | 250 | 14 | M20 | 20 | 73.02 |
18 | 81.5 | |||||||||
630×430 | 756 | 556 | 798 | 598 | 250 | 14 | 24 | 83.17 | ||
18 | 93.4 | |||||||||
630×480 | 756 | 606 | 798 | 648 | 275 | 14 | 24 | 89.67 | ||
18 | 98 |

In order to adapt to the changes in the market, improve the competitiveness of enterprises, meet the diversified needs of customers, our company will be committed to absorbing more professionals, improve the development efforts and technical content and provide high-quality Pressure Proof Watertight Hatch Cover and services for each customer. We rely on our strong technical force, rich manufacturing experience, strict quality control, perfect sales service and strong professionalism to make our products famous at home and abroad. We've got more than 10 years experience of production and export business.
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