PPGI Sheets, Pre-Painted Galvanized Iron Sheets, is a kind of metal sheet with organic coating on the surface of galvanized substrate, which can also be processed by bending and forming with PPGI Coil as the material. Because of its excellent corrosion resistance, decorative properties, and processability, it is often used for building roofs, temporary fences, agricultural facilities, industrial plant walls, cold storage walls, energy-saving buildings, clean rooms, appliance housings, interior decoration, and high-end architectural curtain walls.

PPGI Sheets for Sale
As a professional supplier of pre-painted steel factory, Wanzhi Group produces and sells PPGI sheets with PE/PVDF/Fluorocarbon/HDP/PMP/SMP/FPE/HDP/PU/Epoxy coating on Z30-Z350 galvanized steel substrate in various finishes and shapes.
PPGI Corrugated Sheets
PPGI Corrugated sheets are PPGI steel sheets with wavy surfaces (sinusoidal, trapezoidal or U-wave), which are compressed to enhance the rigidity and flexural strength of the sheets. The concave-convex structure on the surface of the sheet enhances the load-bearing capacity and drainage performance, and can be used as roofing and walling materials for houses, warehouse roofs, site fences, poultry houses, greenhouse roofs, etc.
Trapezoidal Sheet
PPGI Trapezoidal Sheet is a trapezoidal pre-painted metal sheet with parallel ribbed corrugated surfaces, which can be designed with overlapping grooves at the edges. Because of its higher load-bearing capacity or wind-pressure resistance, it is usually used as a wall panel and is widely used for walls of industrial plants, cold storage facades, and so on.
Sandwich Panels
PPGI sandwich panel is a composite panel composed of two layers of PPGI flat or corrugated boards plus a layer of polyurethane, rock wool and other core materials. It has both thermal insulation, sound insulation, heat insulation and structural strength, and is often used as roofs and walls of cold chain warehouses, office buildings, clean workshops and other buildings.
Concealed Panel
PPGI Concealed Panel is a kind of metal panel for building facade or roof installed by special locking or lapping system, with flat surface, simple appearance and excellent waterproof effect. It is widely used for curtain walls of high-end buildings such as office buildings and shopping malls, and large-span structures such as airport terminals.
Special Panel Types
PPGI prepainted steel decorative plate, carved plate, writing plate, clean plate, V-shaped plate, fan-shaped plate and so on. All of them are made of PPGI coil and sheet, through bending, punching, stamping, molding, and other deep processing to become special plates with different application functions.
Plate and Coil
PPGI plain sheet is a flat, non-crimped sheet made from PPGI steel coils, which is usually used as a material for secondary processing (e.g., punching, bending, molding) to make appliance housings such as refrigerator and air conditioner panels, as well as interior decoration such as suspended ceilings and partitions.
Printed Sheet
PPGI printing plate is a painted metal plate with decorative and anti-slip functions, in which concave and convex textures (e.g. wood, stone, leather) are embossed on the surface of PPGI by means of pressure rollers. The diversified texture design makes it widely used in antique architectural facades, interior walls/ceilings of commercial buildings, high-end refrigerator/cabinet panels, office partitions, and interior panels of carriages.
Perforated Sheet
The surface of PPGI sheet is formed with regular holes (round, square, hexagonal, etc.) through the stamping process, which has the functions of ventilation, sound absorption and filtration, and is widely used in the fields of exterior wall decoration, indoor ceiling, machinery shield, filter, screen, station sound barrier, etc.
PPGI Sheets Application
PPGI steel sheets have excellent weather resistance, decorative properties, UV resistance, chemical resistance, adhesion and corrosion resistance. Different sheet shapes and structures are available to meet the installation and performance requirements of applications in construction, industry, agriculture, energy, electronics, transportation, and advertising.

Construction
- Applications: roofing, walling, partitions/ceilings.
- Requirements: Drainage, insulation, decorative, etc.
- Recommendations: Wavy boards, V-shaped boards, sandwich boards, flat boards, frosted boards.
Industrial
- Applications: factories and warehouses, equipment enclosures, sound barriers, etc.
- Requirements: wind and rain protection, heat insulation, noise reduction, easy processing.
- Recommended: trapezoidal plate, sandwich plate, flat plate, PPGL sheet, perforated plate.
Home Appliances and Electronics
- Application: shell, internal structural components, etc..
- Requirements: aesthetic, stamping molding.
- Recommended: painted flat sheets, electro galvanized painted sheets.
Transportation
- Applications: wagon panels, containers, etc.
- Requirements: corrosion resistance, durability, non-slip.
- Recommended: hot dip galvanized steel painted sheet.
Agriculture and Environmental Protection
- Applications: poultry houses/greenhouses, photovoltaic mounts, etc.
- Requirements: lightweight, hygienic, easy to clean, UV resistant.
- Recommended: corrugated sheets, antimicrobial coated PPGI sheets.
Advertising and Decoration
- Applications: billboards, antique buildings, etc.
- Requirements: good outdoor durability, decorative.
- Recommended: pattern design PPGI sheet, embossed sheet.
PPGI Steel Sheets Standards
PPGI sheets are made of galvanized substrate and organic paint coating, the substrate determines the physical and mechanical properties of the sheet and the coating affects the durability of the sheet. Wanzhi Group produces galvanized steel sheets in accordance with international standards such as ASTM, JIS, EN, GB, ISO, etc. Please feel free to contact us if you need any certificates or samples such as SGS, BV, TÜV, etc.
Standard Type | International Standard | Chinese National Standard | Industry Application Standard |
---|---|---|---|
Substrate Standard | ASTM A653 (Galvanized) | GB/T 2518 (Galvanized) | JIS G3302 (Japanese Standard) |
ASTM A792 (Aluminum zinc plated) | GB/T 14978 (Aluminum zinc plated) | EN 10346 (European Standard) | |
Coating Performance Standard | ASTM A755/A755M | GB/T 12754-2019 | EN 10169 |
Standard for Coated Steel Substrates
PPGI steel (prepared galvanized steel) is based on galvanized steel and PPGL (prepared galvalume steel) is based on aluminized zinc.
Galvanized Substrate (GI)
Standard | Mechanical Properties |
---|---|
ASTM A653 | Tensile Strength ≥ 270 MPa |
GB/T 2518 | Yield Strength ≥ 140 MPa |
JIS G3302 | Elongation ≥ 18% |
Aluminum-zinc Plated Substrate (GL)
Standard | Coating Composition | Salt Spray Resistance | High-Temperature Resistance |
---|---|---|---|
ASTM A792 | 55%Al-43.4%Zn-1.6%Si | ≥1000 hours without red rust | Resistant to short-term high temperature of 300°C |
GB/T 14978 | Coating weight ≥100 g/m² | ≥1500 hours without red rust | Resistant to instantaneous high temperature of 400°C |
PPGI Coating Performance Standards
Test Item | Requirement |
---|---|
Coating Thickness | Front ≥ 15μm, Back ≥ 5μm |
Adhesion | ASTM D3359 |
Impact Resistance | GB/T 1732 |
Bendability | T-bend test (0T~3T): No cracks |
Salt Spray Resistance | GB/T 10125 |
Weather Resistance | GB/T 14522 |
Gloss | High gloss ≥ 80%, Matte ≤ 30% |
Wanzhi group is a coated steel factory supplier from China, Our factory is located in Boxing County, Binzhou City, Shandong Province, China, ISO9001,ISO14001 certified, If you need PPGI Sheets materials, finished products or plan to visit Prepainted steel factory, welcome to contact us!