2. Definition of A60 Grade Steel Watertight Door 

A60 grade steel watertight door is a kind of fire- and water-proof bulkhead door.

This door can bear water pressure and fire rated for no less than 60 minutes.

Passenger ships use A60 doors to protect crewmembers and abide by international maritime regulations.

Normal steel watertight door does not come with enhanced frame and watertight sealing system.

So A60 doors offer mechanical strength and excellent sealing performance.

3. Structural Design

3.1 Door Leaf

The door leaf shall be constructed with A60 steel plate as well as reinforced stiffeners.

Therefore it has good mechanical properties.

3.2 Door Frame

It is welded or bolted on the bulkhead.

It provides good basis for watertight sealing arrangement.

3.3 Sealing System

Watertight closure is realized by rubber gaskets or compressible seals.

And the gasket is evenly compressed during closing.

3.4 Locking Mechanism

The door can be locked by manual locking system or hydraulic locking system.

Therefore the door is able to hold water tight under pressure or fire.

4. Construction materials

The materials used in the construction of A60 steel watertight doors are marine-grade,

-A60 steel plate

-Marine seal gaskets

-Stainless steel hinge bolt

-Fireproof paint

Corrosion-resistant A60 steel provides high strength

5. Sealing Performance and Fireproof Grade

Watertight door utilizes multiple sealing gaskets.

Pressure is distributed evenly through compression locks on all sides of the door frame.

Therefore it is possible to completely block the infiltration of water and fire.

Classification societies and IMO approve of these doors for use in watertight bulkheads

6. Features

• Fireproof Rated 60min
• Excellent watertight seal.
• Corrosion resistant steel.
• Built to last with minimum maintenance.
• Simple operation with Manual or hydraulic lock.

7. Marine Structures Applications

Uses of A60 grade steel watertight doors include:

• Engine rooms
• Accommodations
• Bulkheads between fuel tanks
• Control rooms
• Offshore platform rooms

Watertight doors enhance safety and compartmentalization.

8. Marine Standards Met

A60 grade steel watertight doors are made according to IMO standards.

Along with IMO, these watertight doors meet ISO and classification society standards.

IMO

International Maritime Organization

ISO

International Organization for Standardization

9. Why Choose ZHENXING Ship

ZHENXING Ship customizes marine doors, marine windows, and marine hatches.

Why choose ZHENXING Ship A60 doors?

Professional ship structure design

High strength, waterproof and fireproof doors

Shipyard customization design

Reasonable quotations worldwide

View Products in marinedoorswindow.

10. How To Make And Check Quality

Cutting forming of A60 steel plates;

Welding of reinforcement stiffeners and door frames;

Assembling of gaskets and door locks;

Painting of anti-corrosion & fireproof paint.

Qualified inspection after production.

11. Options

Door customization available for A60 doors include:

• Size and dimension.
• Locking type (manual or hydraulic)
• Frame type and finish.
• Sealing gasket materials.

Allowing doors to be configured for any ship or offshore platform.

12. How to Maintain

Check gaskets regularly

Apply lubricant to hinges and locks

Keep steel surface clean from rust

Pressure test watertight function

For marine regulations and safety standards, consult:

• International Maritime Organization
• International Organization for Standardization

13. Questions People May Have

13.1 What is the A60 grade steel watertight door?

A watertight door that is fire and water resistant, mounted on marine bulkheads.

13.2 Where can it be installed?

Engine Room, Accommodation and Tank Bulkheads.

13.3 Can ZHENXING Ship customize the door?

Yes, we can customize door size, type of locks and gaskets.

13.4 Where can I buy these doors?

You can buy our marine watertight door on marinedoorswindow.

14. Summary

A60 grade steel watertight doors keep marine structures safe from fire and water.

ZHENXING Ship’s A60 steel doors are durable and corrosion resistant, for ships and offshore.

Customers can buy quality and certified marine watertight doors on oursite marinedoorswindow.

Trust in ZHENXING Ship to keep your marine products safe and working for a long time with international certificates.