1.What are the applications of double-coated and double-baked galvanized coils in outdoor construction?
Architectural curtain walls/exterior wall panels: Used for exterior decoration in commercial complexes, office buildings, and high-speed rail stations, the coating must exhibit long-term resistance to fading and chalking (fluorocarbon coatings can guarantee no noticeable discoloration for 15-20 years).
Roofing/Roofing systems: For example, color-coated steel roof tiles in factories and warehouses must withstand rainwater penetration and high-temperature exposure. A double-coated structure prevents leaks caused by coating aging in single-coated coils.
Outdoor enclosures: These include fence panels, parking lot canopies, and bus stop roofs. Standard polyester double-coated coils can meet mild outdoor requirements (lifespan 8-12 years).
Municipal facilities: For example, streetlight pole covers, traffic sign backings, and outdoor billboards, require a balance between weather resistance and a smooth appearance. A double-coating process ensures an even, sagging-free coating.
2.What are the applications of double-coated and double-baked galvanized coils in indoor home appliances?
White appliance exteriors, such as refrigerator side panels/back panels, washing machine tubs, and air conditioner exterior housings, require a coating that is scrub-resistant (able to withstand over 500 alcohol wipes without fading) and a uniform color (e.g., off-white or light gray).
Small appliance components, such as microwave oven housings, electric oven door panels, and soymilk maker bodies, must withstand certain temperatures (short-term temperature resistance ≥ 120°C) to prevent discoloration caused by high temperatures.
Internal appliance components, such as refrigerator evaporator covers and washing machine drum supports, while not directly exposed, require excellent rust resistance. A double-coating structure prevents substrate rust from affecting the lifespan of the appliance.
3.What are the applications of double-coated and double-baked galvanized coils in the transportation field?
Commercial vehicle components, such as truck side panels, refrigerated truck bodies, and passenger bus luggage rack covers, need to withstand road dust, rain, and the friction of loading and unloading. Double-coated coils offer superior wear resistance compared to single-coated coils.
Rail transit components, such as subway car interior trim panels (e.g., seat backs and side panels) and high-speed rail toilet partitions, must meet fire retardancy (complying with GB 8624-2012 Class B1 standard) and low smoke toxicity requirements, with an odor-free coating.
Specialty vehicle exteriors, such as the cab shells of sanitation and engineering vehicles, need to withstand mud and sand erosion and mild chemical corrosion (such as the cleaning agents sanitation vehicles come into contact with). Ordinary polyester double-coated coils can meet these requirements.
4.What are the applications of double-coated and double-baked galvanized coils in the civil and decorative fields?
For residential furniture/home furnishings, such as wardrobe doors, bookshelf side panels, and integrated ceiling panels, matte or wood grain transfer double-coated coils (simulating real wood texture) are often used. The coating must be environmentally friendly (meeting E0 environmental standards) and scratch-resistant.
Kitchenware/bathroom accessories, such as cabinet doors, bathroom cabinet side panels, and range hood decorative panels, must be oil-resistant and easy to clean (low surface tension, allowing oil stains to be easily wiped off). Some products may feature a fingerprint-resistant coating.
Light industrial products, such as filing cabinets, toolbox casings, and display racks (such as cosmetics displays in shopping malls and supermarket shelves), require a smooth appearance and low cost. Standard polyester double-coated coils offer the best value.
5.What are the applications of double-coated and double-baked galvanized coils in special fields?
Chemical/food workshops: For workshop partitions and equipment protective covers, chemical-resistant double-coated coils (such as epoxy + vinyl ester coatings) are required to resist corrosion from acid and alkaline solutions.
Electronics factories: Wall panels in cleanrooms, for example, require an anti-static coating (surface resistance 10⁶-10¹¹Ω) to prevent static electricity from attracting dust.
High-temperature components, such as oven interiors and industrial oven doors, require high-temperature double-coated coils (coatings with a long-term temperature resistance of ≥200°C, such as silicone-modified coatings) to prevent high-temperature aging.