Marine Fire Rated Porthole

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
	Copper	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

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