The corrosion resistance of roofing materials directly affects the waterproofing of the roof

Aluminum-magnesium-manganese roof panel is a very cost-effective roofing material. It has the advantages of long service life, environmental protection and beautiful appearance, convenient and quick installation.

It has many advantages such as corrosion resistance, beautiful appearance, light weight, high strength, easy processing and forming, etc. It is widely used in airport terminals, aircraft maintenance depots, stations and large transportation hubs, conference and exhibition centers, stadiums, exhibition halls, and large public Recreational facilities, public service buildings, large shopping malls, commercial facilities, residential buildings and other buildings.

The 270° occlusal process of this kind of roof panel is made by automatic occlusal machine to buckle and bite the bilateral single support fully automatic professional operation. Physical displacement caused by shrinkage. This advantage is reflected in the fact that the long-span roof system with long longitudinal length does not deform due to internal and external forces. At the same time, the complete and complete accessories supply of this roofing system can meet the requirements of various building forms.


The aluminum-magnesium-manganese alloy sheet metal aluminum sheet is divided into 10 series, among which the aluminum materials for construction are mainly 3000 series, such as AA3003, AA3004, AA3005. The outer surface treatment of aluminum materials includes two categories: natural unpainted products and painted products :
a. Non-painted products: hammered aluminum alloy plates (irregular patterns), embossed plates (physical methods of mechanical embossing, forming regular patterns); pre-passivated aluminum oxide surface treatment plates. This type of product does not paint the surface of the board, does not have high requirements for the appearance of the surface, and the price is low.
b. Painted products: According to the coating process, it can be divided into: sprayed board products and pre-rolled coated boards;
According to the type of paint, it can be divided into: polyester, polyamide, modified silicone, epoxy resin, fluorocarbon, etc.,

As far as possible, the paint resists aging under the action of sunlight and ultraviolet rays. Among them, PVDF paint (fluorocarbon coating) has the best anti-aging performance. It is currently known to humans as the strongest anti-ultraviolet organic compound. Fluorocarbon-coated aluminum sheet, according to different quality requirements, adopts horizontal automatic two-coating two-baking, three-coating three-baking and four-coating four-baking roller coating process. The pre-coated PVDF coating has a resin content ranging from 70% to 80%. It is roll-coated by chemical pretreatment, primary coating, fine coating and other processes on a high-speed continuous unit. The front coating is generally 25μm, and the back coating is anticorrosive paint.



Aluminum metal is extracted from nature through electrolysis, and then mixed with quantitative copper, manganese, magnesium, silicon, zinc and other elements through smelting to form a variety of alloys, which can obtain mechanical and physical properties that can meet various needs. . At present, nine series of deformed aluminum alloys from 1000 to 9000 are stipulated, which are used in consumer products, aerospace, construction, packaging, transportation, electrical equipment and other aspects. It has the following characteristics:
◆Light weight. The density of aluminum is 2.73g/cm3, which is only 1/3 of that of steel.
◆High strength. Through aluminum alloy configuration, processing and heat treatment methods can achieve high strength, and even the structure of large passenger aircraft can be built.
◆Corrosion resistance. Aluminum metal is a reliable and durable outdoor building material. It has the ability of self-rust prevention. In the natural environment, a thin and dense oxide layer can be formed on its surface to prevent the metal from oxidizing and rusting in the air. At the same time, it also has the ability to resist a variety of acid corrosion. Ability.
◆Surface treatment is diverse and beautiful. It can be anodic oxidation, electrophoresis, chemical treatment, polishing, painting treatment.
◆Easy to produce, process and shape. Extrudable profiles, drawing, rolling, punching, spinning, rolling, casting and forging. Aluminum plates can be rolled into various thicknesses, even extremely thin aluminum foils.
◆Good electrical conductivity. c Non-magnetization and low electric spark sensitivity, can prevent electromagnetic interference and reduce flammability in special environments.
◆Easy to connect. Aluminum metal can be connected by riveting, welding, gluing and other methods.
◆Recyclable. The recycling value of aluminum is very high, the long-term use cost is relatively economical, and it plays a positive role in saving natural resources.


1. Light weight; the density of aluminum is 2.73g/cm3, which is only 1/3 of that of steel.
2. High strength; high strength can be achieved through component configuration, processing and heat treatment methods.
3. Corrosion resistance; with self-anti-rust ability, the formed oxide layer can prevent metal oxidation and corrosion, and has good acid and alkali resistance.
4. The surface treatment is diverse and beautiful. It can be anodic oxidation, electrophoresis, chemical treatment, polishing, painting treatment.
5. Good plasticity and easy processing;
6. Good electrical conductivity.
7. Easy to install; aluminum metal can be connected by riveting, welding, gluing, etc.
8. Environmental protection, 100% recyclable.
Advantages of aluminum-magnesium-manganese roofing system
(1) Safe and stable system structure
(2) Lightning protection features
(3) Never-ending application capabilities
(4) Roof protection system
(5) Roof fall prevention system
(6) Complete accessory system



1. Upright seaming aluminum-magnesium-manganese roof panel
(1) Model
(2) Shape
Sector Plate Positive Arc Sector Plate Reverse Arc Sector Plate Straight Plate Normal Arc Straight Plate Reverse Arc Straight Plate
(3) Structure
Large span type
2. Vertical seam aluminum-magnesium-manganese roof tie plate
(1) Model
(2) Shape
Positive arc plate circular arc plate sector plate
(3) Structure



Waterproof and breathable layer:

A layer of functional film laid outside the thermal insulation (heat insulation) layer of the building envelope is suitable for curtain walls, profiled steel plates, steel (wood) structures, masonry and other composite exterior walls and sloped roofs. By covering the thermal insulation (heat insulation) layer of the enclosure structure, the penetration of water and air into the building is reduced, while the maintenance structure and indoor moisture can be discharged, effectively avoiding the formation of mold and condensed water in the walls and roofs, ensuring The efficiency of heat preservation (heat insulation) materials is exerted, so as to achieve energy saving and improve the durability of buildings.
Moisture and vapor barrier:
The vapor barrier film is used on the inner surface of the wall or roof insulation layer. It is impermeable and can prevent indoor water vapor from penetrating into the enclosure structure, thereby effectively ensuring the insulation performance of the insulation material and the durability of the structure.
Thermal insulation layer:
Glass wool felt with a thermal conductivity of less than or equal to 0.058 and rock wool board with a thermal conductivity of less than or equal to 0.044 are both non-combustible.
Punching sound-absorbing board:
It has an excellent effect of absorbing noise and noise.




Aluminum sheet

Post time: Oct-13-2021