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{"title":"DC51D+Az 55% Al-Zn Corrosion Resistant Galvalume Steel Coil with 20-275g\/m2 Zinc","imgUrl":"https:\/\/img.chinax.com\/nimg\/6a\/f6\/8e5218f64867dd2a408db55eb642-200x200-1\/dc51d_2baz_55_25_al_zn_corrosion_resistant_galvalume_steel_coil_with_20_275g_2fm2_zinc.jpg","attrs":{"Brand Name":"GNEE","Certification":"SGS","Place of Origin":"Henan","Supply Ability":"10000 Ton\/Tons per Month"}}
{"title":"Hot Dipped Galvanized Steel Grating Stair Tread Grid with ASTM A36 Q235 and","imgUrl":"https:\/\/img.chinax.com\/nimg\/23\/50\/06bb429e3572299c5e92dcc492ea-200x200-1\/hot_dipped_galvanized_steel_grating_stair_tread_grid_with_astm_a36_q235_and_stainless_steel_304_options.jpg","attrs":{"Brand Name":"Gnee","Minimum Order Quantity":"2PCS","Supply Ability":"300000 Square Meter\/Square Meters per Month","Delivery Time":"Shipped in 20 days after payment"}}
{"title":"Hot Dipped Galvanized Steel Grating Heavy Duty Metal Grid Grating Panels","imgUrl":"https:\/\/img.chinax.com\/nimg\/a4\/cb\/43826f549efd74d94de44a9ee60a-200x200-1\/hot_dipped_galvanized_steel_grating_heavy_duty_metal_grid_grating_panels_pressure_welded_and_locked_for_high_load_capacity.jpg","attrs":{"Brand Name":"Gnee","Minimum Order Quantity":"2PCS","Supply Ability":"300000 Square Meter\/Square Meters per Month","Delivery Time":"Shipped in 20 days after payment"}}
{"title":"Construction Use DX51d Steel Coil Galvanized 0.15mm Thick","imgUrl":"https:\/\/img.chinax.com\/nimg\/67\/f1\/a2abb91416030d45be0d1432ec05-200x200-1\/construction_use_dx51d_steel_coil_galvanized_0_15mm_thick.jpg","attrs":{"Brand Name":"Gnee","Model Number":"DX51d","Certification":"ISO9001","Place of Origin":"Henan"}}
{"title":"Hot Dipped Galvanized Steel Grating and Steel Structure Walkway Compliant with","imgUrl":"https:\/\/img.chinax.com\/nimg\/4f\/16\/538537ddd861c1ec4aeeb4414c11-200x200-1\/hot_dipped_galvanized_steel_grating_and_steel_structure_walkway_compliant_with_ansi_2fnaamm_mbg_531_2f532_2f533_en_10025_gb_2ft_70.jpg","attrs":{"Brand Name":"Gnee","Minimum Order Quantity":"2PCS","Supply Ability":"300000 Square Meter\/Square Meters per Month","Delivery Time":"Shipped in 20 days after payment"}}
{"title":"Aisi Standard Galvanized Rolled Coil 0.12-2.5mm","imgUrl":"https:\/\/img.chinax.com\/nimg\/38\/09\/48a550d045c6062fa6ddf734093b-200x200-1\/aisi_standard_galvanized_rolled_coil_0_12_2_5mm.jpg","attrs":{"Brand Name":"genn","Model Number":"Dx51D.Dx52D,Dx53D.DX54D.DX55D","Certification":"ISO","Place of Origin":"Henan"}}
{"title":"Customizable Styles Hot Dipped Galvanized Steel Grating Walkway Compliant with","imgUrl":"https:\/\/img.chinax.com\/nimg\/6e\/db\/ec5995513c473460dc084e04172a-200x200-1\/customizable_styles_hot_dipped_galvanized_steel_grating_walkway_compliant_with_is_3202_and_astm_a_123_standards.jpg","attrs":{"Brand Name":"Gnee","Minimum Order Quantity":"2PCS","Supply Ability":"300000 Square Meter\/Square Meters per Month","Delivery Time":"Shipped in 20 days after payment"}}
The substrate composition of aluminium-zinc steel plate consists of 55% aluminum, 43.5% zinc, and 1.5% silicon. This unique combination merges the physical protection and high durability of aluminum with the electrochemical protection properties of zinc. Under identical conditions, its corrosion resistance is 4-6 times greater than standard galvanized sheet, making it an ideal material for roofing and exterior wall applications.
Performance and Applications
Excellent weather resistance enables over 20 years of service without maintenance. Early test results from roof and wall systems demonstrate survival through decades of intense sun exposure, industrial waste erosion, and extreme temperature and pressure variations without requiring maintenance. With more than 500 million square meters of construction worldwide, aluminium-zinc plate remains the preferred choice for architects and homeowners. Studies indicate such roofing systems typically last 30 years or more in most applications without requiring specialized maintenance or repair.
Product Specifications
Standard
ASTM A653, JIS G3302, GB/T3830-2006
Grade
SGCC, DX51D, A653, SGCH, Q235B
Thickness
0.12-1.3mm
Width
600-1250mm
Base Metal
Alumzinc steel coils
Zinc Coating
20-275g/m²
Coil ID
508mm/610mm
Packing
Standard seaworthy export packing: 3 layers of packaging with kraft paper inside, waterproof plastic film in the middle, and GI steel sheet covered by steel strips with lock, including inner coil sleeve
Delivery
Approximately 35 days after contract signing
Trade Term
FOB, CFR & CIF price
Payment Term
T/T or L/C
Capacity
10,000MT per month
MOQ
25MT = 20GP
Usage
Construction, automotive manufacturing, shipbuilding, containers, and household appliances
Frequently Asked Questions
What are the primary uses of Galvalume?
It is widely used for metal roofing, siding, pre-engineered metal buildings, HVAC ductwork, automotive parts, and appliances.
Is it okay to use Galvalume with pressure-treated lumber?
Generally, no. The chemicals in modern pressure-treated wood (like ACQ) are highly corrosive to Galvalume. Use a barrier tape or physical separator between the wood and metal.
Can Galvalume be used for animal shelters?
It is not recommended for interior animal confinement buildings (like pig barns) because ammonia vapors from animal waste react poorly with the coating.
What is "White Rust" and is it a defect?
White rust (Wet Storage Stain) is a white powdery deposit formed when Galvalume gets wet while tightly coiled or stacked. If light, it's usually cosmetic; if heavy, it may compromise the coating.
Does Galvalume require regular maintenance?
Very little. However, areas not washed by natural rainfall (like under eaves) should be rinsed with fresh water annually to remove accumulated salts and dust.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Trading Company
Year Established:
2008
Total Annual:
3000000-3500000
Employee Number:
100~200
Ecer Certification：
Verified Supplier
Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China.
GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high quality steel ... Gnee Steel Co.,Ltd (GNEE) is the affiliated company for ANGANG GROUP who are one large state-owned iron and steel group located in Henan, China.
GNEE are specialized in manufacturing and supplying large quantities Seamless steel pipes and Shipping-building plates, We are provide high quality steel ...
