DX51D galvanized steel coil building roof special anticorrosive material

Product overview

Galvanized steel coil is cold-rolled or hot-rolled steel coil as the base material, processed by hot-dip galvanized process of high anticorrosion coil, the surface zinc layer is uniform and dense, both steel strength and zinc layer corrosion resistance, widely used in construction, home appliances, automobiles and outdoor facilities.

Core technology

• Hot dip galvanizing: The substrate is immersed in molten zinc liquid (455-480 ° C) to form a zinc-iron alloy layer, and the anti-corrosion life is up to 20-50 years.
• Galvanized type:
• Conventional zinc flower: natural cooling crystallization, decorative and protective balance.
• Zinc-free flower: Smooth surface, suitable for spraying or precision machining.
• Post-treatment process: passivation, oil coating, fingerprint resistant treatment, enhance rust prevention and processing performance.

Mechanical property

Executive standard control

Chemical composition (Substrate example: SPCC)

Technical parameter

• Substrate thickness: 0.3mm-3.0mm (cold rolled substrate thinner, hot rolled substrate thicker).
• Coil width: 600mm-1500mm (super wide width can be customized).
• Zinc weight: Z60 (60g/㎡) to Z275 (275g/㎡), double-sided coating.
• Surface structure: regular zinc flower, small zinc flower, no zinc flower (finish surface).
• Volume weight range: 3 tons to 20 tons (support strip and roll).

Usage and application scenarios

Construction field:

• Steel structure workshop roof: Cold-formed steel can be used to make the supporting structure of the steel structure workshop roof, because of its high strength and light weight, suitable for the roof structure of large industrial buildings.
• Wall enclosure: Cold-formed steel can also be used to build the wall enclosure system of the factory roof to provide stable protection and support.
• Ventilation ducts: Cold-formed steel can also be used to make ventilation ducts for ventilation systems on the roof or walls of the building to ensure good air circulation.

Automobile manufacturing:

• Door inner plate: Cold-formed steel can be used to manufacture the door inner plate of an automobile, because of its good formability, it can produce complex shaped parts.
• Tank shell: Cold-formed steel can be used to make the shell of the car tank, with good strength and corrosion resistance.
• Chassis guards: Cold-formed steel can also be used to manufacture chassis guards for cars, providing additional protection and strength.

Home appliance industry:

• Refrigerator backplane: Cold-formed steel can be used to manufacture refrigerator backplane, because of its flatness and high dimensional accuracy, suitable for the manufacture of home appliance products.
• Air conditioning shell: Cold-formed steel can be used to make the shell of air conditioning, with beautiful and durable characteristics. Washing machine side panel: Cold-formed steel can also be used to make the side panel of the washing machine to provide a solid structural support.

Agricultural facilities:

• Greenhouse skeleton: Cold-formed steel can be used to manufacture the skeleton of greenhouse, provide support structure and withstand various loads.
• Granary ceiling: cold-formed steel can be used to make granary ceiling, with good waterproof, anti-corrosion properties.
• Livestock guardrail: Cold-formed steel can also be used to manufacture guardrail for livestock farms to ensure the safety and enclosure of animals.

Industrial equipment:

• Cable bridge: Cold-formed steel can be used to make cable bridge for supporting and protecting cable lines.
• Storage shelves: Cold-formed steel can be used to make storage shelves to provide stable storage space.
• Distribution box housing: Cold-formed steel can also be used to manufacture distribution box housing, providing protection and beautiful appearance.

Product advantage

✅ Super corrosion resistance:

There is a zinc layer on the surface of the material, which can effectively isolate the corrosive medium, which means that the material can remain stable and not easily corroded, even in harsh environments such as humidity, acid rain or salt spray. For example, in coastal areas or in places with severe corrosive environments such as chemical plants, this material can maintain stable performance for a long time.

✅Easy processing:

The material supports a variety of processing processes, such as cutting, stamping, bending and welding, which means that during manufacturing and use, the material can be flexibly processed and formed to meet different design and use needs. For example, when manufacturing auto parts or building structures, materials can be easily cut, bent and welded.

✅ Environmental safety:

The material complies with the RoHS (Restriction of Hazardous Substances Directive) and REACH (Registration, Evaluation, Authorization and Restriction of Chemicals Regulation) standards, does not contain harmful substances such as heavy metals, and has little impact on the environment and human health. This means that during the production and waste process, the material will not cause serious pollution to the environment, and it is safer and more reliable to use.

✅ High cost performance:

The material has anti-corrosion properties and does not require additional maintenance measures, thus costing less than ordinary steel throughout its life cycle. This means that while the initial investment may be higher, the total cost is actually lower in the long run due to reduced frequency of maintenance and replacement. For example, in long-term projects such as Bridges and buildings, the use of this material can reduce maintenance costs and improve economic efficiency.

Frequently Asked Questions (FAQ)

Q1: How to choose galvanized coil with different thickness of zinc layer?

The galvanized coil with different thickness of zinc layer is suitable for different corrosive environment, the specific choice is as follows:

Z60: suitable for mildly corrosive environment, such as indoor dry environment.

Z120: Suitable for conventional outdoor use, such as building roofs.

Z275: Suitable for harsh corrosion scenarios, such as coastal areas or chemical plants.

Q2: Can the galvanized coil be welded or sprayed directly?

The galvanized coil can be welded, but the zinc layer in the welding area needs to be removed before welding.

Galvanized coil also supports spraying, but it is recommended to phosphating before spraying to improve the adhesion of the coating.

Q3: What should I pay attention to when transporting and storing galvanized coils?

When transporting and storing galvanized rolls, avoid rain. When stacking, moisture-proof paper should be placed between the layers. If it needs to be stored outdoors, it should be covered with rain cloth.

Performance pledge

Quality assurance: Provide third-party SGS test report, warranty period of 10 years.

Flexible customization: Support zinc layer weight, size, surface treatment process personalized customization.

Fast delivery: 72 hours delivery for conventional specifications, 7-15 days production cycle for special needs.