Galvalume Steel: Technological Breakthrough: Cross-era protection of 55% aluminum - 45% zinc alloy coating
Through the ultra-high temperature hot-dip galvanizing process, a micron-level metallurgical bonding layer is formed on the surface of carbon steel. The anti-oxidation property of aluminum and the cathodic protection effect of zinc work together to make the corrosion resistance 4 to 6 times that of ordinary galvanized steel, and the service life in industrial atmospheric environment can reach more than 25 years. Its unique "metallurgical bonding" structure endows it with outstanding processing performance - no coating cracking when bent at 90°, and it is compatible with the entire process chain including rolling, blanking and welding. It is widely used in photovoltaic brackets (with a 30% improvement in weather resistance), high-end home appliance inner tanks (food-grade safety certification) and building roofing systems (with a 50% extension of anti-corrosion period in salt spray environment). The pre-coating compatibility leads the industry and can be directly matched with PVDF fluorocarbon coatings to achieve an integrated solution of "protection + decoration".
Galvanized Steel: A century-old proven universal protection solution
As the most widely used metal protective material, an electrochemical protective barrier is constructed through hot-dip galvanizing (with a coating of 80-600g/㎡ available) or electro-galvanizing (with a coating of 5-25μm) processes. The zinc layer provides steel with an anti-corrosion period of 5-50 years at a sacrifice rate of 1-3μm per year (adjustable according to the severity of the environment). In the field of construction, hot-rolled galvanized Angle steel supports the steel structure framework of skyscrapers. In the automotive industry, electro-galvanized sheets, after being hot-formed at 1800℃, become the core material for anti-collision beams. In the field of people's livelihood, hot-dip galvanized steel pipes safeguard the drinking water safety of millions of families with hygienic standards. Behind the king of cost performance lies a mature and complete industrial chain - from 8mm steel bars to 3000mm wide steel plates, it offers customized coating thickness and surface treatment (passivation/oiling/chromium-free passivation).
Aluminum Products: A builder of lightweight and high-strength metal ecosystems
Aluminum coil: The best interpretation of industrial flexibility
0.01mm ultra-thin aluminum foil serves as the isolation layer for lithium battery cells, safeguarding the power safety of new energy vehicles. 0.3-1.5mm aluminum coils for construction, after fluorocarbon roller coating, become the brilliant exterior of the Burj Khalifa curtain wall in Dubai. Food-grade aluminum coils have passed AA-level certification and serve as a "sterile barrier" to prevent moisture and oxygen in milk powder cans and medicine packaging.
Aluminum tubes: Experts in fluid transmission efficiency
Seamless aluminum tubes with an outer diameter of 4-500mm are used in the aerospace field to carry high-pressure fuel transportation with a density of ≤2.7g/cm³. The internal helical toothed aluminum tubes are applied in inverter air conditioners, increasing the heat exchange efficiency by 15%. Aluminum-plastic composite pipes for construction, with their high-temperature resistance (110℃) and anti-scaling properties, redefine the service life standards of water supply and drainage systems.
Aluminum plate: The magician of Forms from precision to grandeur
Aviation-grade 7075-T6 aluminum plates are formed by superplastic molding and become the key components of the wing ribs of the C919 passenger aircraft. The 5-series aluminum plates for automobiles, through hot stamping technology, achieve a 30% reduction in vehicle body weight while enhancing impact resistance by 40%. The 3-series aluminum plates used in construction, after anodizing treatment, have created a 20-year maintenance-free appearance miracle in the dome of the Sydney Opera House.
Stainless Steel: The precise philosophy of alloy proportioning: 10.5% chromium as the starting point for rust prevention, with unlimited possible performance extensions
Basic model 304 (18Cr-8Ni) : Food-grade certification, achieving no fatigue after millions of bends in Starbucks stainless steel straws, and resisting acid and alkali erosion in kitchen sinks for more than 10 years
Corrosion-resistant upgrade 316 (16Cr-10Ni-2Mo) : Medical-grade standard, becoming the preferred material for artificial joints; In seawater desalination equipment, the resistance to chloride ion corrosion is three times higher than that of 304
High-strength 2205 (duplex steel) : Yield strength ≥550MPa, applied to the risers of deep-sea oil and gas platforms, capable of withstanding high-pressure corrosion environments at a water depth of 2000 meters
From 0.05mm stainless steel capillary tubes (core components of insulin pumps) to 100mm thick stainless steel medium plates (containment vessels of nuclear power reactors), over 200 grades cover deep cold environments ranging from -253 ℃ to high-temperature scenarios of 1150℃. The surface treatment offers 12 options including mirror finish (Ra≤0.01μm), brushed finish, and sandblasting.
Aluzinc Steel: The Master of Environmental Adaptation in Coating Technology
For environments with high humidity (> 85% RH), high salt spray (> 500ppm Cl⁻), and high pollution (SO₂ > 100ppb), the aluminum-zinc alloy coating achieves anti-corrosion upgrades through a dual mechanism of "aluminum-based barrier + zinc-based sacrifice" : The gradient coating design with an aluminum content of 5% to 15% enables the service life in coastal areas to reach over 30 years, which is 2.5 times that of ordinary galvanized steel. In chemical industrial parks, acid-resistant pre-treated aluminized zinc steel plates can withstand acid-base fluctuations ranging from pH3 to 11. In the extremely cold northern regions, the coating's resistance to low-temperature embrittlement ensures no coating cracking at -40 ℃, making it the preferred material for wind power equipment towers.
Prepainted Steel: A Performance Revolution in Coating Systems: A Leap from Color Carriers to Functional Carriers
Basic performance layer
PE polyester coating: Offers over 100 standard color cards with a 5-year color retention period, suitable for factory enclosure systems
HDP high weather-resistant coating: The ultraviolet absorption rate is reduced by 20%, and the color difference △E within 10 years is ≤3, making it the preferred choice for the exterior walls of commercial buildings
PVDF fluorocarbon coating: 20-year weather resistance certification, meeting the highest standard of AAMA2605, achieving a zero-powding miracle by the seaside in Sanya
Functional enhancement layer
Antibacterial coating: With silver ion slow-release technology added, it has passed ISO22196 certification and is applied to the walls of clean areas in hospitals
Self-cleaning coating: The photocatalytic titanium dioxide layer decomposes pollutants, and the surface can be cleaned by rainfall, which is suitable for building-integrated photovoltaics
Thermal insulation composite coating: Thermal conductivity ≤0.05W/(m · K), achieving the integration of "board + insulation", and contributing to the 75% energy-saving goal of buildings
