Popular Manufacturer Stainless Steel/ Iron/Steel Wholesale Waterproof and Moisture-Proof Ship Boat Manhole Cover

Product Description

 

Product Description

High Quality Square and Round Manhole Cover

Marine manhole Coveris a cover plate used on the deck or tank for crews to go into and out for cleaning or maintenance. There are type A, type B, type C, type D, and type E

High - quality square and round manhole covers for ships are key components. They're made of diverse materials. Stainless steel like 304 and 316 resists corrosion, perfect for the salty sea. Carbon steel, with lower cost and high strength, is used in less - corrosive parts. Ductile iron combines strength and toughness.

These covers have reliable seals to stop leakage. Round ones, with even stress, are great for high - pressure areas. Square ones are convenient for storage and cabins. In short, they meet different ship needs, ensuring safety and smooth operation.

 

Product Parameters

Materials & Features

• Material: High-strength carbon steel, ensuring excellent load-bearing capacity and resistance to corrosion in saltwater environments.
• Sealing: Equipped with rubber gaskets for reliable watertightness and oiltightness, preventing leakage of liquids or gases.
• Safety: Designed with secure fasteners (bolts) to withstand vibration and pressure during ship navigation.

Detailed Photos

We offer four main types (Type A, B, C, D) with varying structural designs to adapt to different installation scenarios:
 

Type	Nominal Size (L×W, mm)	Access Way Size (L×W, mm)	Bulkhead Opening Size (L1×W1, mm)	Cover Thickness (s, mm)	Fasteners	Weight (kg)
A	450×350, 600×400, 800×600	450×350, 600×400, 800×600	570×470, 720×520, 920×720	4-14	M20 bolts (16-26 pcs)	23.2-90.2
B	450×350, 600×400, 800×600	450×350, 600×400, 800×600	570×470, 720×520, 920×720	4-14	M20 bolts (16-26 pcs)	28.9-89.9
C	450×350, 600×400, 800×600	450×350, 600×400, 800×600	650×550, 800×600, 1010×800	10-18	M20 bolts (16-26 pcs)	116.6-206.8
D	450×350, 600×400, 800×600	450×350, 600×400, 800×600	620×520, 770×600, 970×770	14-20	M20 bolts (16-26 pcs)	73.1-149.8

 

Other products

We are the professional exporter of marine equipments in China. All of our products are approved by maritime classification societies, such ABS,BV, CCS,DNV, EC. GL,KR LR,NK,RINA, RS.
we also manufacture a wide range of marine products , including:

 

• Various marine doors: weathertight/watertight steel doors, quick-action aluminium doors, A60 fireproof doors, gastight doors, hydraulic sliding watertight doors, etc.
• Other types of marine windows: ordinary rectangular windows, fixed rectangular windows for wheelhouses, aluminium sliding windows, soundproof windows, fireproof rectangular windows (A0, A60 class), etc.
• Hatch covers: steel small hatch covers, quick open-close watertight hatch covers, aluminium watertight hatch covers, A60 fireproof watertight hatch covers, etc.
• Accessories: manhole covers, ladders (aluminium/ stainless steel vertical/inclined ladders), bollards, fairlead rollers, chain wheels, ventilators (mushroom type, gooseneck type), watertight louvers without covers, etc.

Company Profile

Established in 2010, Chongqing New Maritime Imoprt&Export Co., Ltd. is a professional foreign trade company with head office located in the developed city of Chongqing. In favor with prosperous economy in China, New Maritime has exported over 10 millions USD value products and has been cooperating with many good customers overseas and domestic on the base of mutual benefit and trust through years of hard working. We produce and deal in assorted of personal and industrial machinery equipments, marine equipments, marina products etc. Meanwhile we have established goodand longterm relationship with dozens of qualified manufacturers so that we can keep optimizing our products system. Many of our products have ABS, CCS, DNV, KR, NK, IRS, BV, LR and other relevant certificates to enter the markets. New Maritime intends to send more and more excellent "Made in China" into worldwide markets. Moreover we are interested in importing excellent products into China, a fast growing huge market.
 

 

Why Choose Our Manhole Covers?

• Compliance: All products meet international standards (ISO 5894, CB/T 19-2001) and classification society requirements.
• Customization: We offer tailored sizes, thicknesses, and surface treatments to fit specific ship designs.
• Durability: Premium materials and precision engineering ensure long service life, reducing maintenance costs.

For inquiries or custom solutions, contact our technical team-we're dedicated to providing reliable marine access solutions.
Any question,contact us!