Marine Steel Weathertight Door with Round Window Quick Acting

OUR PRODUCT RANGE 
 

1.What is a Marine Door?
Marine doors are closing device of marine ships' entrance.  According the material of ship's bulkhead or wall, there are two installation means bolted and welded.  Most of marine steel doors are welded type.  Marine door is an important part of marine outfitting project.  
Zhiyou marine can supply 
weathertight door, watertight door, fire proof door and watertight hydraulic door etc.

2.What is a watertight door?
A watertight door is a door that meets the watertight requirements to prevent the hull from being submerged in water once it is broken.  The effectiveness of such arrangements is subject to a number of factors, but it is necessary to ensure that any watertight doors on the bulkheads are closed at or almost immediately after the occurrence of a rupture.  It is also necessary to limit the number of access openings in bulkheads and to exercise the strictest control over the operation of watertight doors designed to close such openings.  Watertight doors shall be provided at the entrances and exits of watertight bulkheads below deck, in the form of sliding and hinged.
Watertight metal doors on watertight bulkheads and coaming inside ships.  There are two categories of watertight hinged doors and watertight sliding doors.  
The former is easy to open and close, light structure,The latter is robust but requires control systems. 
The class, installation space, quantity, tightness requirements, transmission mechanism control mode and use conditions of watertight doors are stipulated in ship building codes and relevant international conventions.   

3.What is a weathertight door?
Weathertight doors usually refer to the outer doors of accommodation, indicating that they are weatherproof.  A flushing test is usually carried out.  The flushing test is divided into two kinds, one is to use no pressure of natural water flow for the door dousing test, generally for the door above three floors, the other is to use pressure of water flushing test, generally for the outer door below three floors.  

4.What is a fire door?
Fire door is to point to the door that can satisfy fire resistance stability, integrality and heat insulation requirement in certain time.  It is located in the fire partition, evacuation stairwell, vertical shaft and so on have a certain fire resistance of fire separation.  
Fire door in addition to the role of ordinary doors, more has the role of preventing the spread of fire and smoke diffusion, can prevent the spread of fire in a certain period of time, to ensure evacuation.

5.What is the classification of fire doors?
Marine fire doors generally can be divided into: CLASS A, B, C and H according to fire resistance rating.  In China, the industry standard for Marine fire doors is CB/T 3234. 

6.How is the door watertight?
Generally, the sealing rubber strip on the door leaf is compacted on the door frame by the locking mechanism.  Take manual hinged pressure watertight doors for example, the standard used in China is GB/T 33572.  The strength and tightness requirements of watertight doors are: watertight doors should be able to bear the maximum static water working pressure plus 0.05MPa, continuous pressure 15min, watertight doors should not be deformed.  When the flushing pressure of watertight door is not less than 0.2mpa and the flushing time is not less than 3min, the inner surface of watertight door should be free of water droplets or water traces.  

7.What are Marine Doores used for?
Marine door is the closing device for the entrance and exit of ship cabin. Its general functions include: tight door (watertight door, weathertight door, airtight door, choke door), fire door, shielding door (sound insulation door, electromagnetic shielding door, nuclear radiation shielding door), non-secret door and cold storage door, etc.  

8.How much does Marine Door Cost?
Factors affecting the price of Marine doors:
Different materials, like aluminum, carbon steel, stainless steel.
The thickness for leaf plate, dimension for nominal size.
Different functions, like watertight, weathertight, fireproof( such as A60/A30/A15/A0 with different prices )
Accessory as windows, handwheel, handle, rubber material.

9.How does ZhiYou support OEM&ODM Marine Door Business?
Zhiyou Marine is located in Shanghai and is specialized in manufacturing marine doors.  With an experienced and professional team, we have exported our Ship doors to many countries and regions all over the world, especially Southeast Asia and Latin America. 
Zhiyou Marine support OEM and ODM businesses, our products enjoy a good reputation among our customers.   We welcome customers, business associations, and friends from all parts of the world to contact us and seek cooperation for mutual benefits.

10.How do you Verify Quality of Marine Door?
There are corresponding industrial standards, international standards and Chinese national standards for Marine doors of different uses.  Zhiyou manufactured Marine doors, will meet the corresponding standards.  In addition, we welcome customers to find or entrust us to find qualified independent third parties for on-site inspection, or customers directly to the factory or video inspection.  Of course, we can also provide the general requirements of the industry certificate.  Such as ABS,CCS,DNV,LR,NK and other classification society type approval certificate, factory inspection certificate and product certificate.  

11.What are the Components of Marine Door?
Hinged steel Marine doors generally include the following accessories: locking mechanism, door frame, door leaf, stiffener, sealing strip, handwheel or handle, hinge, lock, door hook.  If it's a fire door, there's insulation.  If it's a remote door, install a control system.  
Hydraulic sliding steel Marine door, generally including accessories: door frame, door leaf, clamping device, track, roller, cylinder, sealing strip.  If it's a fire door, there's insulation.  If it's a remote door, install a control system. 
If bolted, accessories such as bolt nut gaskets are also included.  

12.How do you Install Marine Door?
Marine doors generally adopt welding type or bolt type installation, both of which have relatively mature technology and do not have obvious advantages and disadvantages.  Customer according to their own actual situation to choose the required installation type.  Due to the different installation types, the product types and accessories are slightly different. Before placing orders, customers need to explain in advance which installation type of the products they need in the future.  

NOTES:

1. The content of this table doesn't cover all catagories, providing that the item you are looking for is not included hereof, please feel free to contact us.
2. All the products shall be customerized accordingly, OEM&ODM available.