“As our flagship product, our Prepainted Aluminum-Zinc Steel Coils (PPGL) represent over 14 years of manufacturing excellence.
Operating from our state-of-the-art facility in Shandong, we combine cutting-edge production technology with stringent quality control. The result? Unwavering product stability and superior coating performance you can rely on for every project.”
“Upgrade your manufacturing standards with our premium PPGL (Pre-painted Galvalume) Steel Coils. Engineered for maximum longevity, they offer distinct advantages over standard PPGI: 1mm Aluminium Sheet Anti Fingerprint Stainless Steel
Ultimate Corrosion Resistance: Superior aluminum-zinc coating prevents rust, extending service life in harsh conditions.
High Thermal Stability: Excellent heat reflectivity makes it ideal for roofing and temperature-sensitive applications.
Versatile Applications: The trusted choice for modern construction, premium home appliances, and the automotive industry.”
Core Technical Specifications
| Parameter | Specification |
| Product Name | Prepainted Aluzinc Steel Coils (PPGL) |
| Base Metal Standards | DX51D+AZ, DX52D+AZ, S250GD+AZ, S280GD+AZ, S350GD+AZ, S550GD+AZ |
| Thickness | 0.12mm – 1.2mm |
| Width | 600mm – 1250mm |
| Aluzinc Coating Weight | AZ30 g/m² – AZ150 g/m² |
Coating Systems & Aesthetics
| Parameter | Specification |
| Paint Systems | PE (Polyester), SMP, HDP, PVDF |
| Color Matching | Standard RAL Color Chart or Custom Color Matching |
| Surface Finishes | Matte, High Gloss, Orange Peel, Frosted Texture |
| Custom Printed Patterns | Wood Grain, Camouflage, Brick, Stone, etc. |
1.This is PPGL’s largest and most core consumer market. Due to its excellent weather resistance and UV protection, it is widely used in the exterior and interior structures of modern buildings, performing particularly well in high-temperature, high-humidity, or coastal climates.
Roofing Systems: Corrugated steel sheets, corrugated panels, glazed tiles, etc. PPGL’s high heat reflectivity helps reduce interior building temperatures.
Wall Cladding & Facades: Exterior wall cladding for industrial plants, warehouses, and large supermarkets.
Sandwich Panels: Steel plates on the top and bottom of polyurethane (PU) or rock wool sandwich panels, commonly used in cold storage, cleanrooms, and prefabricated houses.
Doors, Windows, and Public Facilities: Rolling doors, security door panels, louvers, awnings, and drainage systems.
2. Home Appliances / “White Goods” Manufacturing: In the home appliance industry, casing materials not only need to be corrosion-resistant, but also have extremely high requirements for surface quality (such as color difference, gloss, and scratch resistance). PPGL is favored due to its smooth surface and ease of stamping.
Major Appliances: Refrigerator side panels and doors, freezer casings, washing machine casings, dryers.
HVAC: Air conditioner outdoor unit casings (requiring long-term outdoor exposure, severely testing corrosion resistance), indoor unit back panels.
Small Appliances: Microwave oven, oven, water heater casings and control panels.
3. Automotive & Transportation: The automotive and transportation industries have strict standards for lightweight, shock-resistant, and corrosion-resistant materials. PPGL applications here are mainly concentrated in commercial vehicles and internal structural components.
Body Parts: Car door inner panels, trunk lids, chassis mudguards.
Commercial vehicles: Bus body shells, truck cab panels, refrigerated truck bodies.
Public transportation: High-end interior trim panels and partitions for trains and subways.
With over 10 years of deep-rooted expertise in the steel industry, BOMIS Steel commands an optimized, end-to-end supply chain. This robust industry integration allows us to eliminate inefficiencies and significantly reduce production costs. The result? We deliver highly competitive pricing without ever compromising on the premium quality your projects demand.”
Q1: What is the fundamental difference between PPGL and PPGI?
A: The core difference lies in the substrate. PPGI (color-coated zinc) uses a 100% zinc layer for protection; while PPGL (color-coated aluminum-zinc) substrate coating consists of 55% aluminum, 43.4% zinc, and 1.6% silicon. This combination makes PPGL’s corrosion resistance typically 2-3 times that of ordinary PPGI, and it also has stronger heat reflectivity, making it more suitable for extreme climates and high-end construction.
Q2: What range of aluminum-zinc coating weights (AZ Coating Weight) do you offer?
A: We offer a full range of customized AZ Coating Weights from AZ30 to AZ150 g/m². For coastal areas or heavy industrial environments, we recommend a coating weight of at least AZ100 to ensure a long product lifespan.
Q3: What are the painting system options for color-coated aluminum-zinc coils?
A: We offer a variety of high-performance coating solutions to suit different needs:
PE (Polyester): Economical and practical, suitable for general environments.
SMP/HDP (Reinforced Polyester/High-Durability Polyester): Offers better color retention and UV resistance.
PVDF (Fluorocarbon): Top-tier weather-resistant solution with the strongest resistance to chemical corrosion and a shelf life of over 10 years.
