Top 5 PPGI Trends You Need to Know | Expert Insights and Analysis
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INTRODUCTION
Pre painting coil is a product made of hot-dip galvanized steel sheet, hot-dip aluminum-zinc steel sheet, elector-galvanized steel sheet, etc., which is coated with one or several layers of organic coating on the surface after surface pretreatment, and then cured by baking. It is named after the colored steel coil coated with various colors of organic coatings, and is referred to as color coated steel coil.
APPLICATION, SPECIFICATION AND ADVANTAGE
Pre painting coil is a coating material widely used in construction, furniture, metal products and other fields. Color coated coil specifications refer to the unified specifications of color coated coil size, thickness, coating type and other technical requirements. The size specifications of color coated coils mainly include width, length, thickness and layer type. The width of color-coated coils is usually between 600mm and 2000mm, the length is customized according to user needs, the thickness is generally between 1.2mm and 25.4mm, and the coating types usually include polyester coating, polyurethane coating, PVDF coating, etc. Therefore, different specifications should be determined according to different usage scenarios. Compared with galvanized steel sheets, color-coated steel sheets have good corrosion resistance, heat resistance, and heat reflectivity; they have similar processing and spraying properties to steel sheets.
TREND AND PROSPECT
The main demand for pre painting coils comes from the construction field. In recent years, the accelerated urbanization process, population growth, and environmental pollution have provided a broader space for the use of color-coated steel coils. At the same time, the application of color-coated steel coils in building facades, roofs, and fences has gradually become an important element of architectural design, promoting the rapid development of the color-coated steel coil market. At present, the scale of the global color-coated steel coil market is constantly expanding. According to market research data, it is estimated that by 2026, the global color-coated steel coil market will reach US$14.58 billion, with a compound annual growth rate of 5.3%. In the domestic market, China's color-coated steel coil market is also developing rapidly, and it is expected that the market size will exceed 200 billion yuan by 2023.
INSPECTION STANDARD
Appearance quality: The surface of PPGI should be free of obvious defects such as bubbles, cracks, inclusions, etc. The surface should be smooth and flat without obvious scratches and damage. Dimensional accuracy: The diameter, thickness, weight and other parameters of it should meet the corresponding process requirements, and the error should not exceed the allowable range. Mechanical properties: The strength, toughness, hardness and other mechanical performance indicators of the steel coil are tested by tensile test, impact test, hardness test and other methods to ensure that it meets the product use requirements. Chemical composition: The chemical composition of the steel coil is analyzed to ensure that its composition ratio meets the standard and meets the requirements of specific uses. Non-destructive testing: Ultrasonic testing, X-ray testing and other non-destructive testing methods are used to conduct quality inspection on the inside of the steel coil to find and eliminate internal defects. Anti-corrosion performance: For PPGI that need to be anti-corrosive, their corrosion resistance should be tested, such as salt spray test, soil resistivity test and other methods. Packaging and labeling: The packaging and labeling of the steel coil should comply with the corresponding specifications and standards, including clear and clear information such as product name, specification model, manufacturer, etc.