Part name

Material

Pros & Cons

Cover plate

AL6063

Light weight，Easy to shape，Anti-rust.

Q235A/B

easy to rust, brittle and wear resistant. Fireproof

Coaming

AL6063

Light weight，Easy to shape，Anti-rust.

Lock

Q235A/B

Withstand pressure, fire prevention

SUS304

Sturdy and not easy to damage, and resistant to seawater corrosion

Q235-B

easy to rust, brittle and wear resistant.

Sealing

Neoprene rubber

Excellent Watertight performance

Hinge

SS304

rustproof, less brittle

Q235A/B

easy to rust, brittle and wear resistant.

Copper

High strength, high hardness

Options according to user requirements

Parts

Remark

Features

Clips

Wing clips

Single side opening

Wedge clips

Double side opening

Wheel

Quick action

Hinge position

Long side, short side, four side equivalent

Features and consequences

1. The thickness of the plate does not meet the actual requirements, and the water pressure resistance performance is bad;

2. The handle is made of carbon steel and is easy to break;

3. The hinges are made of carbon steel, easy to rust;

4. The quality of the seal (PVC) is low, easy to deform, has a pungent smell, and has a short lifespan, which may cause water in the cabin, resulting in property damage, and in severe cases, endangering the safety of the ship's navigation.

1. The coaming and cover is strictly in accordance with the IMO standard, and has passed the hydro test of various classification societies to meet the marine standard.

2. The stainless steel handle has a sturdy structure.

3. The high-quality hatch cover sealant ensures that the deformation of the hull, hatch coaming and hatch cover can be allowed during the voyage, and the hatch cover can be sealed under any circumstances.