Color-coated steel sheet for Flawless Finish
Durable, vibrant color-coated steel sheet and ready for any climate. Trusted by builders and engineers across 60+ countries.
What is a Color-Coated Steel Sheet?
A color-coated steel sheet is a product obtained by applying layers of paint or polymer film to a steel substrate, such as cold-rolled or hot-dip galvanised steel, by the continuous roll-coating method. The end result was a solid, rust-proof, good-looking product that is used in a wide variety of industries around the world. Each sheet is given a colourful, weatherproof surface treatment and has the structural strength of steel. It can be used both indoors & outdoors, making it ideal for household appliances & industrial rooftops. Color-coated steel sheet adds value to any structure over the years, since it is one of the most affordable building materials on the market.
Color-Coated Steel Sheet Applications
There is a huge range of applications, from roofs to fridges. Some of the most important industries that make regular use of this product are:
Construction & Roofing
Home Appliances
Transportation
Interior Design
Types of Color-Coated Steel Sheet
In each coated steel sheet category there is a specific performance level to be aimed for. Choosing the right one saves you money and guarantees it will last.
PPGI (Pre-Painted Galvanized Iron)
PPGI coil is a hot-dip galvanised steel, coated with a polyester or other paint system. This is the most popular choice for general construction and appliance use worldwide because of its low cost and good corrosion protection.
Benefits
Affordable, easy to use, choice of colours, good surface adhesion and a reasonable amount of time outdoors.
Applications
Construction & Building
- Roof Systems: Used on houses, businesses and light industrial sheds. Lightweight and weatherproof.
- Wall & Facade Panels: Factory-finished panels have clean, inviting exteriors. Suitable for buildings.
- Purlins and Structured Decking: Steel frame buildings. Floor decking and purlins. Saves money and avoids condensation.
Household appliances
- Refrigerators and Freezers: It’s a common outer shell for refrigerators and freezers around the world for smooth surfaces.
- Washers and driers: PPGI is used on washer side panels and housings to prevent scratches.
- Air Conditioner Units: PPGI steel sheet for air-conditioner enclosure, indoor and outdoor, to ensure weather resistance.
Ductwork/HVAC
- Air Ducts and Ventilation: Standard rectangular and circular duct material for HVAC. Its smooth surface will reduce air resistance.
- HVAC units and fan casings
- Used for making fan and air handler casings. Factory coating inside prevents moisture and deadens panel vibration.
- Grills, Diffusers: Made of thin PPGI. White with unfinished ceilings.
Automotive & Transport Truck & Trailer Body Parts
- Truck Body Panels & Trailers
- PPGI coil sheet is used in the truck body panel and trailer for strength and weight saving.
- Bus Interior Panels: PPGI Bus Interior Panel is hygienic and durable.
- Shipping Container Linings: PPGI prevents condensation of cargo in container liners.
PPGL (Pre-Painted Galvalume Steel)
The steel coil for PPGL is pre-painted with an aluzinc base coat. It consists of 55 percent aluminium and 43.4 percent zinc. This leads to a corrosion life up to three times longer than normal galvanised items, ideal for use in industrial and coastal areas.
Benefits
This base has better corrosion resistance, heat reflectivity, durability and paint adherence than other bases.
Applications
Industrial/Heavy Construction
- Factory & Warehouse Roofing: Suitable for industrial roofs with large spans. Aluzinc base reflects heat, extending roof life.
- Steel Structure Cladding: PPGL Steel Structure Cladding for industrial wall cladding improves weathering in polluted environments.
- Logistics & Cold Storage: PPGL offers thermal reflectivity and condensation control for cold storage roofs.
Coastal & Marine Environments
- Beach Houses: In coastal air, zinc is no match for PPGL coil in chloride attack. For buildings located within 5 kilometres of the ocean.
- Harbour and Port Installations: Used in port sheds and maritime workshops for sea spray exposure. Aluzinc base with 15+ year maintenance, avoids scorching.
- Offshore Support Facilities: PPGL cladding for offshore support buildings in extreme coastal weather.
Renewable Energy, Solar
- Solar racking frames: PPGL steel coil matches the life span of PV panels of 25-30 years.
- Perimeters of solar farms: PPGL solar farm perimeter poles and cable trays are low maintenance.
- Wind farm service building: PPGL is used as zero-maintenance cladding for service buildings of remote, high-wind wind farms.
Agriculture and Rural Development
- Barns, Farm Sheds: PPGL is used for farm buildings and barns for fertilizer resistance and outdoor living.
- Grain Storage Silos: PPGL sheet used in grain silo cladding for better thermal performance and corrosion survival Reflectors reduce interior heat and protect stored crops.
- Water Management and Irrigation Systems: Aluzinc protection is required for rural pump buildings and irrigation shelters.
PVD / Specialty Coated Sheet
Colour coating of stainless steel sheets is done by applying a thin metallic film by means of physical vapour deposition (PVD). These produce unique coatings like brushed titanium, rose gold and gold, primarily for luxury ornamental and architectural projects.
Benefits
Advantages include excellent wear and scratch resistance, low environmental impact and a beautiful metallic shine.
Applications
Architecture & Facades
- PVD color coating stainless steel sheet: UV stability keeps metallic coatings bright in direct sunshine.
- Feature Entrance Walls, Canopies: Luxury building exteriors use PVD panels to create a sense of grandeur.
- Architecture Sunshades & Louvres: PVD reduces solar heat gain and shapes architecture.
Hospitality, Interior Design
- Hotel Receptions/Lobby: PVD rose gold and champagne panels line the hotel lobby walls and reception desks.
- Bar & Restaurant Decoration: Hygienic food service with easily cleanable surfaces.
- Retail Fitouts, Spa, Wellness: PVD hardness keeps display surfaces looking new despite daily client contact.
Elevators, Transit Interiors
- Lift cab wall and ceiling panels: Gold, ebony and mirror finishes are used in luxury homes and businesses.
- Passenger Areas | Metro & Airport: PVD protects high traffic metro kiosks and airport counters against vandalism.
- Escalator Side Panels Balismores: PVD is used for mall and airport escalator casing and balustrades to promote wear and lean resistance.
Luxury Furniture
- Furniture Surfaces & Framing | Premium: Designer PVD-coated steel table legs, chair frames and shelf brackets look expensive.
- Trim & Panels for High-End Appliances: Premium ovens and range hoods feature PVD trim panels for market leadership.
- Decorative Door Hardware: The PVD coating on door handles, hinges and pull bars lasts 5-10× longer than brass plating.
Antibacterial Steel Plate
One type of steel is called an antimicrobial steel plate. It is protected against any infections by an antimicrobial cover. The coating is of some metals like silver, zinc or copper. Some metals are inhibitory to microbes on surfaces. This steel is perfect for areas where hygiene is crucial.
Benefits
Touch activates bacteria enzymes. It continues to work for quite a while. It is safe for food and medicine. Corrosion free. Available in a variety of colors. Lessens the need for strong cleaning agents.
Applications
Hospitals & Medical Facilities
- Hospital Walls & Panels: Installed and assembled on healthcare facility walls and doors. It helps in preventing the transmission of germs (Staphylococcus, Escherichia coli, Pseudomonas aeruginosa) between patients and employees.
- Surgery Room Equipment: This steel is used in making the cabinets and tool holders found in operating rooms.
- Elevator Doors & Frames: Very many people press the buttons of the elevators. This steel helps to make surfaces less friendly to microorganisms.
Food Kitchens & Food Factories
- Food Tables & Counters: Tables and counters for use in food preparation in the kitchen. This product kills bacteria on surfaces, so they cannot live and grow.
- Fridges & Cold Storage: This type of steel is used for the interior panels of large refrigerators and other cold storage appliances. This inhibits mold and bacteria growth.
- Food Line Covers & Machines: Covers Fab lab covers for food processing machines. In the kitchen it helps to keep food safe.
Medicine Making Factories
- Clean Room Walls & Ceilings: Pharmaceutical manufacturing facilities demand extremely sterile environments. The steel keeps the space free of germs.
- Machine Covers: This steel is used for covers of machines which produce pharmaceuticals. It stops bacteria from getting into the medicine.
- Storage Shelves: This steel is often found in places where medications are stored. It can help to make medicines clean and safe.
Public Places & Transport
- Train & Bus Handrails: A lot of people hold onto the railings of trains and buses every day. The use of this steel can reduce the transmission of infectious diseases.
- Airport Counters & Seats: This steel is used in the desks and chairs in airports for strength and safety. It helps keep public spaces cleaner.
- Public Toilet Walls & Doors: It is a steel commonly used for walls and doors in public bathrooms. It helps reduce germs in high traffic toilets.
Schools & Childcare Centers
- School Desks & Lockers: Usually found on school desks and lockers. This means less kids will get sick.
- Baby & Toddler Furniture: This steel is commonly used in cribs and changing tables in nurseries and other baby and toddler furniture. It protects babies from toxic bacteria.
- Canteen Counters & Shelves: This steel is commonly used for the food counters in school cafeterias. Its support keeps eating places clean and safe.
Base Materials & Features
The basic substrate plays a huge role in the performance of the final product. The number one priority is quality.
Cold-Rolled Steel (CRS)
Enclosed or lightly exposed locations require the substrate of choice-cold-rolled steel. It provides a flat surface, ideal for painting. It is mechanically very strong due to its fine grain structure and can be easily bent and formed.
- Smooth and even texture
- Easy to shape into complex forms
- Improved cost effectiveness in non-corrosive environments
- A thickness range from 0.12 mm to 3.0 mm
- The best choice for indoor appliances and panels.
Hot-Dip Galvanized Steel (HDG)
Galvanised steel is coated with pure zinc which acts as a sacrificial defence against rust. It is a good defence in outdoor conditions against oxidation , and the basis of PPGI steel coil. “It works well in urban environments with mild humidity.
- Zinc coating thickness 40-275 g/m²
- Permanent bonding for paint applications
- Weatherability (10-15 years)
- Any standardised paint universally compatible
- Inexpensive roof and walls
Aluzinc / Galvalume Steel (AZ)
Aluzinc is a very durable material, coated with an alloy of 55% aluminium, 43.4% zinc and 1.6% silicon. The steel also becomes extremely heat and corrosion resistant in the process. On this basis the PPGL coil products are designed for use in harsh industrial, coastal and other environments.
- 3 times more corrosion resistant than galvanised
- Very high heat reflectivity (as much as 75 percent)
- AZ coating 50-185 g/sqm
- State-of-the-art, cutting edge security
- Great for solar panels and PPGL roofs
Multi-Layer of Color-Coated Steel Sheet
Each layer has a different function. Durability and longevity are achieved through its multi-layer structure.
Back Coat (Protective Paint)
On the back side to prevent water seepage. It also reduces friction and prevents damage to surfaces when transported and stacked.
Back Primer
Holds the protective cover to the metal base. It improves the adhesive strength and ensures that all surfaces are protected equally over time.
Steel Substrate (Base Metal)
The main structural material is cold rolled steel, either galvanised or aluzinc coated steel. It is also responsible for all the mechanical stresses and determines the weight and strength.
Zinc / Aluzinc Coating
Applied to sheets of galvanised or aluminium by hot dip technique. This coating prevents the surface of the steel from rusting.
Chemical Conversion Layer
A passivation procedure ( no chromate or chrome ) ensures better adhesion between the metal and the primer. It also offers the surface an initial corrosion shield.
Primer Coat
Then the primer is rolled on and baked in the oven. It improves the adhesion between the metal and the topcoat, and provides an additional barrier against corrosion.
Topcoat (Color Paint)
Visible ornamental layer available in polyester, SMP, HDP or PVDF base paint solutions. This layer determines the colour, gloss and weather resistance of the finished off panel.
PPGL vs PPGI: Key Differences
Both PPGI and PPGL are steel products with coatings , but their basic coatings are vastly different. PPGL steel coil has an aluminium-zinc alloy layer, whereas PPGI steel coil has a pure zinc layer. The only difference is heat performance, corrosion life and application suitability.
Aluzinc / Galvalume Steel (AZ)
PPGI uses hot dip galvanised zinc (HDG) as the coating base. PPGL is made of Gallium/Aluminium Zinc alloy which has 55% of aluminium and 43.4% of zinc. This basic difference explains all performance differences between the two classes.
Corrosion Resistance
PPGL steel is three times better corrosion resistance than PPGI. Perfect for humid, coastal and industrial zones. PPGI likes moderate environments so it is a great fit for indoor applications or city houses.
Heat Reflectivity
PPGL’s aluzinc base has better heat reflectivity than PPGI’s zinc base. Therefore, energy-conscious building designers need to compare the cooling load reduction potential of PPGL and PPGI steel coils.
Cost Difference
PPGI is generally 10-20% cheaper per metric tonne. PPGI is more economical for applications that do not require ultra-high corrosion resistance. PPGL may be more expensive at first but will save money in the long run on large projects.
Why Engineers Rely on This Material
Excellent Corrosion Resistance
Corrosion resistance is excellent because the multi-layer coating method prevents oxygen and moisture from penetrating into the steel core. This keeps rust at bay even in coastal or high humidity areas. PPGL coil sheet products require little maintenance and last for decades.
Lightweight Yet Strong
They are a good alternative to solid metal or concrete due to their high strength to weight ratio. They are a cheaper way of transport, and at the same time, they reduce the structural load on structures. On-site panel management is a breeze.
Wide Color Range
We can offer hundreds of RAL colours on request. A precise roll-coat paint technique is used for a uniform coverage. And you may have more design flexibility without incurring extra finishing costs.
Formability & Easy Processing
The sheets are formable and will not split or peel when cut, rolled or stamped so are easy to work with. This makes them suitable for complex roofing systems and profiles. “PPGI coil has very good formability.
Thermal & Sound Insulation
Steel with a coloured coating is a more energy efficient option when used with insulated panel systems. PPGL steel might absorb less heat because of its reflective surface. This drastically reduces the cooling costs in large industrial buildings.
Eco-Friendly Production
Steel is forever recyclable. Unlike spray painting, the roll-coat method creates almost no waste. Choosing the best color-coated steel sheet is a large topic when it comes to sustainable building methods and reducing construction waste.
Cost-Effective Lifecycle
Less installations, less replacements, less maintenance and less overall project cost. No painting is required on factory finished surfaces. As a result, building schedules are significantly shortened.
Colours and Personalisation Options
Every project is different. Hence we offer a range of customisation options such as coating thickness, coil width and colour.
Standard RAL Colors
With over 200 standard RAL and custom colours in stock, our range includes a wide variety of reds, blues, greens, whites and metallics. All shades are produced using the same batch matching. This ensures uniformity across large orders, even when they are shipped separately.
Matt Colors
In our matt color range we offer carefully selected matt colours in warm earth tones and cold industrial greys. A low-sheen anti-glare finish provides a smooth, non-reflective surface of each finish. All matte colours are batch matched with consistent tone and texture in large orders, even in successive shipments.
Thickness & Width Options
Coil widths (600 mm to 1,500 mm) and thicknesses (0.12-2.0 mm) are available in a wide range. We can also offer slit widths and cut lengths to customer specifications.
Surface Finishes
Available in a range of finishes including; matte, high gloss, embossed, stone grain, wood grain and anti-fingerprint. Our unique roll-coat printing process allows us to produce prints with unique patterns and textures.
Certifications for Reliability
Our plant and goods are top of the line when it comes to quality and safety.
ISO 9001:2015
Full certification quality management system. All orders are subject to in-process and final inspection procedures prior to shipment.
ISO 14001
Certificate of environmental management system. Our goal is to reduce the use of chemicals, our emissions and our effluent at every stage of coating.
CE Marking
The item complies with all building and safety codes enforced by the European Union. In the European Union, CE-marked sheets can be used in all projects without further testing.
ASTM / AISI Standards
Our steel is up to snuff with ASTM A653 and ASTM A792 for galvanised and Galvalume sheets respectively. They are known around the world by engineers and specifiers.
SGS Test Reports
Third-party lab testing from SGS can help you rely on the mechanical qualities, coating weight and paint adhesion. All major purchases are fully test certificated.
BV Factory Audit
Our manufacturing site and the supply chain were audited by Bureau Veritas. We have documented our production capacity and compliance methods so consumers can rest assured.
Why Engineers Rely on This Material
PPGL Steel Coil
We have a continuous color-coating line, which permits us to have tight control on the width and thickness of our flagship steel coil. The foundation is galvalume-coated steel that is subsequently painted with a polyester or PVDF finish for excellent weatherability. Each coil is tested before it is sent out.
Cold Rolled Steel Coil
Our cold rolled steel coil provides accurate tolerances and smooth surfaces, which is a big plus for subsequent coating and shaping processes. Color-coated steel sheet is produced on highly accurate cold-reduction mills for uniform thickness and flatness throughout the coil length. It is a main raw material for surface treated steel products.
PPGL Steel Coil- Special Grade
If high performance applications are needed, our special grade PPGI & PPGL Steel Coils are the way to go. PPGI & PPGL Steel Coils are designed for extreme environments with an enhanced Galvanized base with heavier Al-Zn coating. The top coat is designed to easily withstand high levels of humidity, industrial environments and the seaside.
Why Select Us For Color-Coated Steel Sheets
For the quality PPGI and PPGL coil you can afford, fast delivery and full technical support, look no further than Shandong Xinhaihui Metal Technology Co., Ltd.
Direct Factory Pricing
We are a direct color-coated steel sheet manufacturer, cut the middleman and sell PPGI PPGL steel coils with factory price. No broker fees. Payment plans are available. Discounts are graded for bulk customers.
Fast Global Shipping
Our Shandong factory is the direct shipping point for over 60 countries. Usually stock products will be shipped out in 7-15 days after your order is confirmed. Being a reliable supplier of these products, we handle all export documentation to ensure that your PPGL and PPGI coils are cleared through customs anywhere in the world.
Full Technical Support
Our engineering staff can help you determine the coating specification, thickness or grade if needed. Mill test certificates, cut samples and independent SGS lab reports are available on request.
Frequently Asked Questions
What is the difference between PPGL steel coil and PPGI?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
What paint processes exist for color-coated steel sheets?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
Are you able to supply colours and sizes to order?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
What is the minimum order quantity of PPGI coil and PPGL coil?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
What is the best basic substrate to use?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
Do you provide third party test certifications with your products?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
What is the average lead time to fulfil an order?
The base of PPGL is an aluminum-zinc alloy and the base of PPGI is hot-dip zinc-coated. PPGI is more cost-effective for typical indoor and urban uses, but PPGL is much more durable in extreme conditions.
Customers Reviews
As a steel distributor, I have worked with many china suppliers. Shandong Xinhaihui stands out for their prompt communication and accurate specs. The sample we received matched bulk production perfectly.
Their technical team helped us select the right pvd color coating stainless steel sheet for our coastal building project. The advice was accurate and the product has been installed for 18 months now with zero rust or paint failure.
The price was competitive for PPGI & PPGL Steel Coil but what impressed us more was the zero defect rate. Out of 40 coils, not one had a surface mark, edge crack, or coating skip. Our forming line ran perfectly.
I needed a specific RAL color that other suppliers said was unavailable in our order size. Shandong Xinhaihui matched the color in a 30-ton order. The sample approval process was clear and fast.
Our appliance manufacturing line needs extremely flat and clean steel surfaces. The PPGI and PPGL coils from Xinhaihui have given us the best press performance we have seen from any Chinese supplier.
We ordered PPGL coils for a large warehouse roofing project. The color consistency across 80 tons was remarkable. No variation between coils. The coating weight matched the MTC exactly – we tested it ourselves.