Galvanized Iron (GI) coils are renowned for their exceptional durability and corrosion resistance, making them a popular choice in various industries. This article addresses the top 10 frequently asked questions about GI coils, providing insights into their features, applications, and benefits.
GI coil is a steel coil that has undergone a galvanization process, which involves coating the steel with a layer of zinc. This zinc coating significantly enhances the coil's corrosion resistance, making it more durable than untreated steel coils. GI coils are extensively used in construction, automotive manufacturing, appliances, and general engineering due to their strength, corrosion resistance, and cost-effectiveness.
1. Corrosion Resistance: Strong protection against rust.
2. Longevity: Extended product lifespan.
3. Strength and Durability: Suitable for demanding applications.
4. Versatility: Wide range of applications.
5. Cost-Effectiveness: Long-term savings.
6. Aesthetic Appeal: Smooth, shiny appearance.
7. Recyclability: Environmentally friendly.
8. Base Metal Protection: Shields against environmental damage.
1. Steel Preparation: Cleaning the surface.
2. Pickling: Removing impurities.
3. Fluxing: Enhancing zinc adhesion.
4. Galvanizing: Applying the zinc coating.
5. Cooling: Solidifying the zinc layer.
6. Finishing: Improving surface quality.
7. Inspection: Ensuring quality standards are met.
1. Construction: Roofing and wall components.
2. Automotive: Chassis and parts.
3. Appliances: Durable exteriors and components.
4. Industrial Equipment: Machinery and tools.
5. Electrical: Conduits and panels.
6. Transportation: Vehicle bodies and parts.
7. Infrastructure: Bridges and tunnels.
1. SGCC (DX51D): Standard coating for general use.
2. SGCD (DX52D): Thicker coating for enhanced corrosion resistance.
3. SGCE (DX53D): Suitable for harsh environments.
4. SGCF (DX54D): For extreme environmental conditions.
1. Width: 600mm to mm.
2. Thickness: 0.12mm to 2.5mm.
3. Weight: 3 to 15 MT
4. Inner Diameter: 508mm to 610mm.
5. Outer Diameter: mm to mm.
6. Length: Typically mm to mm.
Compared to other steel coils, GI coils offer superior corrosion resistance, durability, and economic advantages. While the initial cost may be slightly higher, the long-term cost benefits are significant.
1. Surface Preparation: Cleaning the steel.
2. Pickling: Removing oxide layers.
3. Fluxing: Promoting zinc adhesion.
4. Galvanizing: Applying the zinc layer.
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5. Cooling: Solidifying the coating.
6. Finishing: Enhancing quality.
Known for their exceptional durability, GI coils can last anywhere from 20 to 50 years or more under normal conditions. Regular maintenance and protective coating applications can further extend their lifespan.
1. Raw Material Costs: Prices of steel and zinc.
2. Manufacturing Processes: Production expenses.
3. Zinc Coating Thickness: Higher thickness increases cost.
4. Market Demand: Supply and demand dynamics.
5. Quality and Standards: Higher quality may carry a premium.
6. Transportation and Logistics: Affect final pricing.
7. Economic and Political Factors: Trade policies and tariffs.
GI coils are a versatile and reliable choice for many applications due to their superior corrosion resistance and durability. Understanding their features and applications can help industries make informed purchasing decisions.
For more information or inquiries, please contact FADA STEEL, a leading GI PPGI steel manufacturer in China.
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- : +86 155
- Website: www.fadasteel.com
- LinkedIn: https://www.linkedin.com/company/steelcoils/
Product Description
PPGI AND PPGL COIL
Prepainted Galvanized Steel Coils / Pre-painted Galvanized Steel Coil (PPGI)
Pre-painted Aluzinc Steel Coil (PPGL)
PrePainted Galvanized Steel Coil (PPGI) and Pre-Painted Galvalume Steel Coil (PPGL) is a kind of building materials, with galvanized sheet and aluzinc sheet as the substrate, after pretreatment (degrease and chemical treatment) and liquid dope with several layers of color, then firing and cooling, finally the palte steel is called pre-painted galvanized steel coil (PPGI) or pre-painted galvalume steel coil(PPGL).
As the layer bears different colors, it is also known as color coated steel sheet. Through the combined use of diverse paints and base substrates, we select colors and material properties that meet the specific needs.
Painting information as following:
Top Paint: PVDF, HDP, SMP, PE(Polyester), PU.
Prepainted Galvanized Steel Coil has many functions like decorative (color ) machinability, weather resistance, scratch resistance, stain resistance, chemical resistance and adhesion resistance.
Primer Paint: Polyurethane, epoxy, PE.
The functions of this layer including machinability, corrosion resistance, adhesion and scratch resistance.
Back Paint: Epoxy, modified polyester.
Our output of the automatic color coating production line can achieve 120,000MT annually. The whole production line speed is 120m/min with double coating and double drying technique, which can produce various of sheets and plates.
The finished product has a variety of excellent capabilities, such as processing capability and smooth, flat surface, it's widely used in outdoor and interior decoration, furnishing manufacturing, home appliance, automobile, external building materials ( roofing materials, wall-materials) industry, commercial and residential public facilities etc.
1). Production scheduling:
All quality details required by customers, such as (RAL)color, glossiness, paint film thickness, weight per meter, width, roll length, roll weight, package as well as tolerance and delivery time, should be clearly recorded in the production sheet.
2). Following up manufacturing:
According to the requirements of the production schedule and the workshop operation standards, the production will be completed step by step to ensure that the quantity, quality, packing and delivery time are in conformity with the requirements of the buyers and relevant international standards.
3). Quality Inspection:
All goods will be inspected after finishing manufacture, a series of tests will be carried out, such as pencil hardness test, scribing hardness (also known as scratch hardness test), cut test, coating thickness measure, glossiness measure, impact test, moisture resistance test, MEK test, and visible spectrophotometer test. Survey report will be issued and presented to clients.
We ensure that all products conform to the requirements of the order and relevant international standards.
The packing of coils consists of anti-damp paper, PVC film, cardboard, the cargoes will be strapped with steel strips, fixed with locks and edge protectors and guarantees the optimal condition of the delivered goods. Each coil can be fixed with additional wooden/steel skids wedge(horizon placement )or wooden pallets(vertical placement).
We select the shipping companies strictly according to the different requirements and business traditions of different countries and regions, we have our own logistics team, loading and reinforce team, we can guarantee the cargoes will be delivered in superior conditions. With the reputation and the efficient after-sales service system, our company has built the long relationship with many of clients and won the trust of them.
The company is the world’s best Pre-Painted Galvanized Steel Coil supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.