316 Stainless Steel Round Louvered Vent Cover 4 Inch 5 Inch Polish Air Vent Cover for Marine Hardware
Speficication of air vent cover
Richwits air vent cover is produced in stainless steel316 material , which is solid and durable
The surface is polished . Good material and excellent polishing quality make it has good performance on anti-rust and corrosion resistance .
Each pc pass our inspection before shipping to you.
2 sizes are available for you ， 4 inch and 5 inch. If there is no size you need, please feel free to let us know.
Product Advantage
Superior Corrosion Resistance: It contains molybdenum, which strongly resists seawater, salt spray and cabin oil corrosion. Unlike 304 stainless steel, it rarely rusts or perforates, ensuring long-term stable operation in harsh marine environments.
High Structural Reliability: It has excellent toughness and tensile strength, withstanding ship vibration, impact and extreme temperature changes. It won’t easily break even in polar voyages, guaranteeing safe and durable ventilation system performance.
Low Maintenance Cost: Its smooth surface is easy to clean and needs no frequent rust removal or painting. It has a service life 2–3 times longer than ordinary materials, greatly cutting down replacement and maintenance expenses for ocean-going ships.
Flexible Processing & Installation: It can be welded, stamped and bent into various structures like shutters and grilles. Lightweight and easy to hoist, it fits different ship ventilation needs and enables efficient batch installation on site.
Technical Parameters
Product Uses
Engine Room Ventilation: It resists high temperature, oil fumes and humidity in ship engine rooms, maintains stable air circulation, prevents corrosion-induced ventilation failure, and ensures the normal operation of mechanical equipment.
Deck & Open-Air Ventilation: It withstands long-term erosion from seawater splashes and salt spray on ship decks, keeps the ventilation structure intact, and is suitable for open-air areas requiring continuous air exchange.
Living & Control Areas Ventilation: It adapts to the enclosed environment of crew cabins and navigation bridges, avoids rust and pollution caused by salt mist, ensures fresh air supply, and improves the comfort and safety of the interior space.
FAQ
1. Why does stainless steel have magnetism?
a.Often, people use magnets to test the quality of stainless steel. If a magnet doesn't attract and has no magnetism, it is genuine and of good value.
b.On the contrary, it is regarded as a counterfeit. In fact, this is an extremely one-sided and unrealistic method of wrong identification. c.Austenitic stainless steel is non-magnetic or weakly magnetic. Martensitic or ferritic stainless steel is magnetic. However, when austenitic stainless steel undergoes cold working, the microstructure of the processed area will also transform into martensite.
d.The greater the degree of processing deformation, the more martensitic transformation occurs and the greater the magnetic property. The material of the product will not change.
e.More professional methods should be adopted to test the material of stainless steel. (Spectral detection, stainless steel identification liquid detection). 2. Why does stainless steel rust?
a. When dust containing other metal elements or particles of dissimilar metals accumulate on the surface of stainless steel, in a humid environment, the condensate water between the adherent and the stainless steel forms a micro-battery, triggering an electrochemical reaction and damaging the protective film. This is known as electrochemical corrosion. b. When organic substances such as vegetable juice, noodle soup, and phlegm adhere to the surface of stainless steel, they form organic acids in the presence of water and oxygen. Over a long period of time, these organic acids will corrode the metal surface. c. The stainless steel surface adheres to substances containing acids, alkalis and salts (such as splashed alkali water and lime water during wall decoration), causing local corrosion. d. In polluted air (such as that containing large amounts of sulfides, carbon oxides, and nitrogen oxides), upon encountering condensation water, liquid spots of sulfuric acid, nitric acid, and acetic acid are formed, causing chemical corrosion.
Packing and Delivery
Exhibition
316 Stainless Steel Round Louvered Vent Cover 4 Inch 5 Inch Polish Air Vent Cover for Marine Hardware
Speficication of air vent cover
Richwits air vent cover is produced in stainless steel316 material , which is solid and durable
The surface is polished . Good material and excellent polishing quality make it has good performance on anti-rust and corrosion resistance .
Each pc pass our inspection before shipping to you.
2 sizes are available for you ， 4 inch and 5 inch. If there is no size you need, please feel free to let us know.
Product Advantage
Superior Corrosion Resistance: It contains molybdenum, which strongly resists seawater, salt spray and cabin oil corrosion. Unlike 304 stainless steel, it rarely rusts or perforates, ensuring long-term stable operation in harsh marine environments.
High Structural Reliability: It has excellent toughness and tensile strength, withstanding ship vibration, impact and extreme temperature changes. It won’t easily break even in polar voyages, guaranteeing safe and durable ventilation system performance.
Low Maintenance Cost: Its smooth surface is easy to clean and needs no frequent rust removal or painting. It has a service life 2–3 times longer than ordinary materials, greatly cutting down replacement and maintenance expenses for ocean-going ships.
Flexible Processing & Installation: It can be welded, stamped and bent into various structures like shutters and grilles. Lightweight and easy to hoist, it fits different ship ventilation needs and enables efficient batch installation on site.
Technical Parameters
Product Uses
Engine Room Ventilation: It resists high temperature, oil fumes and humidity in ship engine rooms, maintains stable air circulation, prevents corrosion-induced ventilation failure, and ensures the normal operation of mechanical equipment.
Deck & Open-Air Ventilation: It withstands long-term erosion from seawater splashes and salt spray on ship decks, keeps the ventilation structure intact, and is suitable for open-air areas requiring continuous air exchange.
Living & Control Areas Ventilation: It adapts to the enclosed environment of crew cabins and navigation bridges, avoids rust and pollution caused by salt mist, ensures fresh air supply, and improves the comfort and safety of the interior space.
FAQ
1. Why does stainless steel have magnetism?
a.Often, people use magnets to test the quality of stainless steel. If a magnet doesn't attract and has no magnetism, it is genuine and of good value.
b.On the contrary, it is regarded as a counterfeit. In fact, this is an extremely one-sided and unrealistic method of wrong identification. c.Austenitic stainless steel is non-magnetic or weakly magnetic. Martensitic or ferritic stainless steel is magnetic. However, when austenitic stainless steel undergoes cold working, the microstructure of the processed area will also transform into martensite.
d.The greater the degree of processing deformation, the more martensitic transformation occurs and the greater the magnetic property. The material of the product will not change.
e.More professional methods should be adopted to test the material of stainless steel. (Spectral detection, stainless steel identification liquid detection). 2. Why does stainless steel rust?
a. When dust containing other metal elements or particles of dissimilar metals accumulate on the surface of stainless steel, in a humid environment, the condensate water between the adherent and the stainless steel forms a micro-battery, triggering an electrochemical reaction and damaging the protective film. This is known as electrochemical corrosion. b. When organic substances such as vegetable juice, noodle soup, and phlegm adhere to the surface of stainless steel, they form organic acids in the presence of water and oxygen. Over a long period of time, these organic acids will corrode the metal surface. c. The stainless steel surface adheres to substances containing acids, alkalis and salts (such as splashed alkali water and lime water during wall decoration), causing local corrosion. d. In polluted air (such as that containing large amounts of sulfides, carbon oxides, and nitrogen oxides), upon encountering condensation water, liquid spots of sulfuric acid, nitric acid, and acetic acid are formed, causing chemical corrosion.
