DQ Marine

Marine Equipment & Technical Supplies

TECHNICAL DATASHEET Issued 2026-08-23

DQ MARINE PRODUCT DATA

Type A Marine Manhole Covers for ship

Category
Manhole Cover
Origin
China
Type A Marine Manhole Covers for ship

Product Overview

DQ Marine supplies marine equipment and technical products for shipyards, vessel operators, offshore projects and industrial buyers worldwide.

Key Specifications

Category Manhole Cover
Model / SKU type-a-marine-manhole-covers-for-ship
Standard CB/T19-2001
Material Carbon Steel Q235
Origin China

Technical Information

Type A marine manhole covers for ship:

This cover is used as watertight and oiltight manhole covers. Type A marine manhole cover is also called as rising type manhole cover.

Standard: CB/T19-2001

Material: Carbon Steel Q235

Technical Data:

Type Nominal Size L1 L2 L3 B1 B2 B3 S Fastener Weight
kg
mm Dai Qut
A 450x350 450 470 570 350 370 470 4 M20 16 23.2
6 30.8
8 36.9
10 45.8
600x400 600 620 720 400 420 520 6 20 48.8
8 59.2
10 69.3
12 79.6
800x600 800 820 920 600 620 720 8 26 52.4
10 65.8
12 78.2
14 90.2