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This Galvanized Base Color Coated Steel Coil belongs to premium Color Steel Coil, Cold Rolled Steel Coil and Galvanized Steel Coil series, also classified as high-performance Prepainted Steel Coil and professional Roofing Steel Coil & Building Material Coil for heavy corrosion construction environments. Manufactured on fully intelligent automatic powder coating production lines, this product adopts electrostatic powder spraying plus high-temperature curing molding technology, which is completely different from traditional roller coating craft. It serves as high-end anti-corrosion color steel substrate specially developed for power energy, new energy plants, industrial workshops and coastal high-corrosion construction sites. High-quality galvalume steel coil is selected as the base material of all Building Material Coil. The formed surface coating is compact and pore-free, thoroughly solving common industry defects of conventional roller coated steel coil including easy pulverization, color fading and poor anti-corrosion performance. Matched with exclusive edge sealing anti-rust technology, the full-length steel coil realizes all-round dead-angle-free anti-corrosion protection for long-term outdoor engineering application.
Compared with ordinary Prepainted Steel Coil and regular Roofing Steel Coil processed by roller coating, our intelligent powder spraying production line delivers uniform coating thickness and stable adhesion on every batch of Galvanized Steel Coil and Cold Rolled Steel Coil. As core Building Material Coil widely supplied to large energy and steel structure projects globally, this Color Steel Coil effectively reduces later maintenance and rust rework complaints for construction owners and engineering contractors.
Carry out surface flatness, thickness and zinc layer inspection for incoming Cold Rolled Steel Coil and Galvanized Steel Coil, remove defective blanks and send qualified galvalume substrate to unwinding station for continuous production.
Complete degreasing, pickling and passivation treatment to remove oil stain, rust and oxide scale on coil surface, laying foundation for tight adhesion of powder coating for finished Color Steel Coil.
Intelligent spraying equipment evenly sprays electrostatic powder on front and back sides of steel coil, precisely controlling coating thickness to meet 100–120μm front and 60–80μm back standard of high-grade Prepainted Steel Coil.
Deliver sprayed steel coil to constant temperature curing oven for powder solidification, then implement air cooling to form compact pore-free anti-corrosion coating layer for Roofing Steel Coil and Building Material Coil.
Conduct cutting edge grinding, dust cleaning and supplementary sealing coating on finished coil edges, then wind processed Galvanized Base Color Coated Steel Coil into standard finished rolls for packaging and delivery.
All Galvanized Base Color Coated Steel Coil, including Color Steel Coil, Cold Rolled Steel Coil, Galvanized Steel Coil, Prepainted Steel Coil, Roofing Steel Coil and Building Material Coil, are produced in compliance with international steel construction and anti-corrosion coating industry standards. Our intelligent powder spraying production line has passed ISO 9001 quality management system certification, all coating thickness control, salt spray anti-corrosion testing and edge sealing processing procedures meet EU CE construction material safety specifications. Each shipment of finished steel coil can be attached with substrate zinc layer test reports, coating thickness inspection records, C4 anti-corrosion salt spray test certificates and color difference detection documents to support overseas import customs clearance and engineering project quality audits.
Overseas steel structure engineering contractors, energy project builders and building material distributors give consistent high praise to our Galvanized Base Color Coated Steel Coil and full series Color Steel Coil, Cold Rolled Steel Coil, Galvanized Steel Coil, Prepainted Steel Coil, Roofing Steel Coil and Building Material Coil. Buyers comment that the intelligent electrostatic powder spraying craft delivers far superior anti-corrosion and weather resistance compared with conventional roller coated steel coil, and the exclusive cutting edge sealing anti-rust technology solves the long-standing edge rust pain point of color steel materials in coastal and chemical projects. End customers engaged in thermal power and photothermal energy construction projects reflect that this high-grade powder coated Building Material Coil maintains intact coating and stable color after years of continuous outdoor operation, without surface pulverization, cracking or edge rust failure, greatly lowering overall project operation and maintenance costs.
A1 This Galvanized Base Color Coated Steel Coil adopts electrostatic powder spraying with thicker compact pore-free coating reaching C4 anti-corrosion grade, matched with exclusive edge sealing anti-rust process. Traditional roller coated Roofing Steel Coil has thin coating layer, prone to pulverization, fading and bare cutting edge rust under high corrosion environments.
A2 Yes. The product meets C4 high anti-corrosion standard, with thick powder coating and complete edge grinding & sealing supplementary coating process. For ultra-long service life demand in coastal areas, we can further upgrade marine anti-salt fog powder formula for Cold Rolled Steel Coil and Galvanized Steel Coil substrate.
A3 Absolutely. Our powder spraying workshop supports custom color formula development beyond standard color card ranges for Prepainted Steel Coil, perfectly matching personalized color requirements of thermal power, photothermal and chemical industrial park enclosure projects.
A4 We supply galvalume substrate material test certificates, coating thickness inspection reports, C4 grade salt spray anti-corrosion test records, ISO quality certification and CE compliance documents for all batches of Roofing Steel Coil and Building Material Coil shipments.
A5 Standard mass production cycle for regular color and standard size steel coil is 12–24 working days. Special customized color, extra anti-corrosion upgraded coating and non-standard coil dimension Cold Rolled Steel Coil orders will extend production lead time by 5–10 working days according to modification complexity.
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Main Product:
Color steel coil,
color aluminum coil,
steel structure ,
color steel profiled plate,
color aluminum plate,
aluminum plate
