| Standard | ASTM A755, JIS G3312 |
| Products | coil, sheet, panel, corrugated, etc. |
| Warranty | 15–30 years |
What is ASTM A755 PPGI coil?
ASTM A755 PPGI coil refers to prepainted galvanized steel that complies with the standard set by the American Society for Testing and Materials (ASTM), ASTM A755 covers prepainted galvanized steel and prepainted galvalume steel coatings and substrate bonding and durability requirements, including, coating type, thickness, adhesion, scratch resistance and other physical properties. These include coating type, thickness, adhesion, scratch resistance, and other physical properties. ASTM A755/A755M specification produces pre-painted, hot-dipped steel for outdoor construction, appliance housings, automotive production, and more.
Material Requirements
ASTM A653 galvanized steel, chromate passivated to form a chemically transformed film.
Coating Requirements
Primer epoxy or polyester-based, top coat polyester (PE), siliconized polyester (SMP), high weathering polyester or PVDF.
Surface Options
PPGI Matt, glossy, wrinkled, printed, wood grain, marble, brick, and other designs.
ASTM A755 PPGI Coil for Sale
Wanzhi Group has supplied PPGI coils by ASTM A755 (and PPGI steel by JIS G3312, EN 10169, and other international standards) to more than 150 countries worldwide. As a professional PPGI manufacturer, we can provide PPGI coils, sheets, and other products with various patterns and surface designs in the range of 0.12-1.5mm wide, 600-1250mm.
Specification
| Grades | DX51/52/53/54D+Z, S280GD+Z, S350GD+Z, S550GD+Z, SECC, etc. |
|---|---|
| Colors | Top/Back：RAL，Painted steel，3D Painted steel, etc(can be customized) |
| Thickness | 0.12-1.5 mm |
| Width | 600-1250mm/ customized |
| Coil Weight | 3-6 tons/ customized |
| Substrate Type | Hot dip galvanized, Galvalume, Zinc alloy, Cold rolled steel, Aluminum-zinc plated steel，Zimalium |
| Zinc Coating Thickness | Z30-275g/ ㎡,AZ30-150g/ ㎡ |
| Introduction to Coating | PVDF、HDP、SMP、PE |
| Coating Thickness | Top ：10-40 um，Back：5-20 um |
| Inside diameter | 508/610mm |
| Package | Standard export package or as per your requirements |
| Certificates | SGS, ISO 9001,CE |
| Date of Delivery | 5-45 days |
PPGI Price
The price of ASTM A755 PPGI coil is in the range of US$600-1000 per ton, among which PE coated PPGI coil has the lowest cost and is widely used, while PVDF and antimicrobial coated PPGI coils are more expensive but with excellent performance, which are very popular pre-coated materials in recent years.
ASTM A755 PPGI Coil Case Study
So far, we have provided PPGI steel solutions for roofing sheet processing projects, greenhouse projects, ventilation ducting projects, guttering projects, sandwich panel projects, and industrial plant projects in Libya, Liberia, Turkmenistan, Azerbaijan, Saudi Arabia, UAE, Chile, Peru, Philippines, Turkey, and other countries.
110 tons of PPGI and PPGL in Colombia
3000 Tonnes of PPGI Coil to Libya
280 Tons of PPGI Coils Shipped to Georgia
Customized ASTM A755 PPGI Coil
In addition to regular thickness, width, and material, Wanzhi Group offers customized and application-specific ASTM A755 PPGI Coil design and production services. You can choose the substrate material, metal coating thickness, paint material, paint film thickness, color, pattern, surface treatment, logo, packaging, etc., according to your project application and budget.
- Substrate: hot rolled steel, cold rolled steel
- Metal coating and thickness: zinc coating (Z30-Z350g), zinc-aluminum alloy coating (AZ20-AZ350g)
- Paint: Primer with epoxy resin and polyester / Topcoat with PE, SMP, PVDF, HDP, PVC, etc.
- Film: Primer 5–20 microns / Topcoat 10–40 microns.
- Color: RAL color card
- Patterns: wood, brick, marble, flowers, grass, etc.
- Surface treatment: matt, glossy, wrinkled, etc.
- Logo: Customized logo, without logo
- Packaging: roll weight can be specified, plastic film, moisture-proof paper, galvanized iron, strapping, etc.
ASTM A755 Production Process
Wanzhi Group ASTM A755 PPGI Coil factory has 3 PPGI production lines, which can produce painted hot-dip galvanized steel, painted electro-galvanized steel, and other coated steel. Our factory has obtained ISO9001 and ISO14001 certificates, and we invite customers to visit our factory or video conference to see the PPGI production and quality control process.
- Galvanizing: High temperature hot dip galvanizing.
- Finish: Chromate passivation.
- Primer: Epoxy or polyester primer.
- Top Coat: PE, SMP, HDP, or PVDF.
- Curing: Oven temperature 200-250°C.
- (QC: Tests: Salt spray, adhesion and gloss tests).
Precautions
The thickness of the zinc layer, the curing time, and the temperature will affect the corrosion resistance and the surface finish of the PPGI coil. To avoid flaking or rusting of the coating, it is important to carry out a surface treatment during galvanizing and painting and to strictly monitor the stability of the curing oven.
Application Areas and Purchasing Recommendations of PPGI
ASTM A755 PPGI coil, protected by a zinc and organic coating, provides excellent corrosion protection and aesthetics, making it cost-effective in outdoor construction, appliance production, and other industrial manufacturing processes.
Application
- Building and Construction: PPGI Roofing, siding, gutters, and downspouts.
- Automotive: interior panels, truck trailers.
- Appliances: Refrigerator doors, washing machine covers.
- HVAC: Ducting and ventilation components.
- INDUSTRIAL EQUIPMENT Machine guards, storage cabinets, cable trays.
- Agricultural structures: greenhouses, livestock sheds
Purchasing Recommendations
To maximize the value of PPGI steel and reduce project costs, we can analyze the application scenarios, application environments, and other aspects to select the most cost-effective pre-painted steel solution.
Application Scenarios
- For construction materials, choose the general specification PPGI coil that meets the requirements of ASTM A755.
- For industrial equipment, choose PPGI steel coil based on galvanized steel with a zinc layer thickness of Z180 (g60) or higher.
- PPGI coils with PVDF coating are available for coastal and chemical zones.
Metal coating type
- General environment: Z90 (90g/m², both sides).
- Highly corrosive environment: Z275 (275g/m², both sides).
Paint coating type:
- PE coating PPGI coil is recommended for indoor and outdoor construction in general climate environments.
- SMP/HDP coated PPGI coils are recommended for high-temperature environments.
- PVDF-coated PPGI is recommended for high-end construction.
- Hospitals, food processing plants, and clean laboratories recommend sterile coated PPGI coils.
ASTM A755 PPGI and ASTM A792 PPGL
ASTM A755 PPGI coil and ASTM A792 PPGL coil both have a good appearance. PPGI is cost-effective and more versatile, while PPGL is cost-effective and suitable for more corrosive environmental conditions.
ASTM A792 PPGL: ASTM A792/ASTM A792M Precoated Aluminum-Zinc Steel Sheet, this standard covers the requirements for pre-coated aluminum-zinc plated steel sheets for higher corrosion resistance applications, based on an aluminum-zinc alloy steel substrate, with a variety of coatings on the surface, which are commonly used in construction, roofing, and walling applications.
Differences between ASTM A755 and Other Standards
| Standard | Coating Types | Key Differences |
| ASTM A755 | Hot-dip Zn/Al + organic coatings Z, ZA, ZAM + pre-painted | Focus on combined metallic + organic coatings |
| EN 10346 | EU standard for coated steels Z, ZA, ZM, AZ | Includes more environmental testing (e.g., REACH) |
| JIS G3321 | Japanese standard for pre-painted PE, SMP, PVDF on GI/GL | Stricter color tolerance |
Premium PPGI Manufacturer – Wanzhi
If you have diversified ASTM A755 PPGI coil sourcing needs and want to get a cost-effective price, then sourcing PPGI steel from China is the ideal choice for you. China PPGI steel manufacturers have proven coating technology and diverse customization options, and with a minimum order quantity of 10 tons, you can get the most competitive price!
How to Evaluate PPGI Suppliers?
You can ask the supplier to provide MTC (Material Certificate), ISO 9001 (Quality Management), and ISO 14001 (Environmental Protection) certificates for ASTM A755PPGI coil compliance and verify the supplier’s qualification through the certificates. Then, we examine the production scale, customization capability, delivery lead time, and after-sales service of the PPGI suppliers to verify the strength of the suppliers. Finally, customer feedback is used to understand how the product performs in the application.
How to Evaluate the Quality of PPGI Products?
Before purchasing, you can request a sample to test the zinc layer weight, coating thickness, salt spray resistance, adhesion, color difference, etc. After production, you can also appoint a third-party inspection or organization, such as SGS, BV, etc., to check the quality of the product. (Wanzhi Group provides free PPGI samples of regular sizes, patterns, finishes, and paints.)
ASTM A755 PPGI Coil Factory
Wanzhi Group factory is located in Binzhou City, Shandong Province, China. Our factory is ISO 9001 (quality management) and ISO 14001 (environmental protection) certified, with an annual production capacity of 600,000 tons. We welcome customers from all over the world to visit us. If you need ASTM A755PPGI coil price or samples, please feel free to contact us: info01@wanzhisteel.com.
PPGI coil Frequently Asked Questions and Solutions
Why do PPGI coil coatings flake?
PPGI coil coating flaking is mainly caused by 3 reasons: poor adhesion due to improper pretreatment, insufficient curing, and mechanical damage. Solution: 1. Remove impurities from the surface of the galvanized sheet during processing, improve coating adhesion, and strictly control baking time and temperature. 2. 2. Avoid scratches and impacts during transportation and further processing.
Why do PPGI coil coatings produce red rust?
The causes of red rust on PPGI sheets are insufficient zinc coating, impurities in the coating, and strong environmental corrosion. Solution: Ensure that the weight of the zinc layer is not lower than the standard, avoid air bubbles and other impurities during the coating process, and use a high zinc layer or high-performance paint in areas with high humidity and salt spray.
What are the causes of PPGI fading?
The main causes of PPGI fading are strong UV rays, chemical contamination, and poor paint stability in the application environment. Solution: Replace the UV-resistant paint according to the application environment and increase the film thickness in areas with high pollution and strong UV light.
How do you solve the problem of flaking, red rust, and discoloration of ASTM A755 PPGI coil?
PPGI coils can be repaired by spraying paint after cleaning the steel surface.
Do you need more information about ASTM A755 PPGI coil and sheet? Welcome to contact us, we will reply you within 2 hours after we receive your message.