Marine Fire Rated Porthole
Introduction of Marine Fire Rated Porthole
The marine fire porthole includes a window seat, a window frame, a fireproof glass, and a fireproof sealing component. When a fire occurs, it can be used to isolate the temperature and prevent the spread of the fire within a certain range. According to the fire protection level, it can be divided into A, B, and C, among which the A level has the highest fire resistance.
Configuration selection
parts
material
Pros and Cons
Glass
Fireproof glass
Good light transmittance and fire retardant performance
Normal Glass
Have no function of fireproof function
Window frame and seat
Q235-A
Good welding performance, Good low temperature toughness
High strength, high hardness
Storm cover
Q235-A
Good welding performance, Good low temperature toughness
Copper
High strength, high hardness
Insulation
Inorganic fireproof board
The flame retardant performance is good, and the non-burning time can reach more than 3 hours in case of fire.
Mineral wool
Used for heat preservation parts below 200 ℃
Ceramic wool
Density 170Kg/m³
It can be used for low temperature insulation at 200 °C, medium temperature insulation at 500 °C, and fire insulation at 1000 °C.
Seal
Graphite
Excellent high temperature resistance, chemical resistance, good elasticity and long service life
Neoprene
Excellent Watertight performance
Options according to user requirements
Parts
Remark
Features
Window Type
Fixed
Openable
Left/Right open
Installation Type
Bolt
Welded
Comparison Differences
Copper
Other manufacturer’s low quality fire porthole
HI-SEA high quality fire porthole
1.High impurity content of window frame material make the construct easy to brake.
2.The thickness of the glass dose not meet the requirements of fireproof.
3.Installation accessories made of low quality carbon steel, easy to rust and not fireproof.
4.The glass thickness is thinner and the fire resistance test time is shorter
1. High-quality carbon steel window frame, the structure is firm and not easy to damage
2. Surface coating color is optional
3. The glass is double-layer thickened glass, which contains refractory liquid. Not only has fire resistance, but also has outstanding strength and high hardness. After the glass is broken, the glass is in an obtuse angle, and will not touch people.
4. cause some damages. It can keep transparent and bright for a long time under the long-term exposure of ultraviolet rays.
5. Ceramic wool insulation is light in weight, corrosion resistance, low thermal conductivity, good thermal insulation performance, and is an efficient insulating material.
Specifications of Marine Fire Rated Porthole
no.
nominal size
type B(welded)
typeC(bolted)
glass thickness t
cutout in steel wall
external size
cutout in steel wall
external size
heavy
light
D
D1
D2
D1
D2
1
200
263
350
360
410
10
8
2
250
313
400
410
460
12
8
3
300
363
450
460
510
15
10
4
350
413
500
510
560
15
12
5
400
463
550
560
610
19
12
6
450
513
600
610
660
19
15
Picture of Marine Fire Rated Window
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