Introduction:
Colour coated coil is a product made from hot-dip galvanised sheet, hot-dip aluminium zinc plated sheet, electro galvanised sheet, etc., which is pre-treated (chemical degreasing and chemical conversion treatment) and then coated with one or several layers of organic paint and subsequently baked and cured. Because of the coating of different colours of organic paint coloured steel coil and so named, referred to as colour coated coil.
The use of hot-dip galvanised steel strip as the substrate of the colour coated steel strip in addition to the zinc layer protection, the zinc layer on the organic coating plays a role in covering and protecting the steel strip to prevent rust, the service life of the steel strip is longer than the galvanised strip, about 1.5 times.
- Classified by substrate type, organic coated steel plates typically use cold rolled sheets, hot galvanized sheets, electro-galvanized sheets, alloyed plates, galvanized aluminum plates, galvanized zinc alloy plates, tin plates, chrome plates, aluminum plates, and others.
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- Classified by processing technology, the different coating methods include roller coating, spraying, powder coating, composite film, and printing. Depending on the number of coating and baking cycles, there are single coating and baking, double coating and baking, triple coating and baking, and quadruple coating and baking processes. These processes produce various types of organic coated steel. Additionally, based on embossing or printing, they can be further subdivided into wood grain, marble grain, leather grain, and cement mortar grain coated steel plates.
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- Classified by coating type, organic coatings can be made with different paints, resulting in PVC coated steel, polyester coated steel, acrylic coated steel, fluorocarbon coated steel, and silicone polyester coated steel.
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- Classified by coating performance, there are high weather resistance coating plates, high temperature coating plates, self-extinguishing coating plates, sterilization coating plates, non-stick snow coating plates, fingerprint-resistant coating plates, and self-lubricating coating plates.
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- Classified by special coatings and uses, there are epoxy zinc-rich coatings, cold rolled steel substrate organic coatings, surface flocked steel, and special machine-coated laminates, such as post-wood film boards, sandwich panels, and shock-resistant boards.
Colour Coated Coil Usage:
Colour coated coil has light weight, beautiful and good anti-corrosion properties, and can be directly processed, the colour is generally divided into grey and white, sea blue, brick red, mainly used in advertising, construction, home appliance industry, electrical appliances industry, furniture industry and transport industry.
The coatings used for colour coated rolls are selected according to the use of different environments with suitable resins, such as polyester silicone modified polyester, polyvinyl chloride plastisol, polyvinylidene chloride and so on. Users can choose according to the use.
Coating Structures:
Type of coating structure
2/1: Coat upper surface twice, lower surface once, bake twice.
2/1M: Coat upper and lower surfaces twice, bake once.
2/2: Top and bottom surfaces are coated twice each and baked twice.
Usage of different coating structures:
2/1: This single layer back coating has poor corrosion resistance and scratch resistance but offers good adhesion. It is mainly used for sandwich panels.
2/1M: This coating provides good corrosion resistance, scratch resistance, and molding properties, along with good adhesion. It is suitable for single-layer compression molding panels and sandwich panels.
2/2: Featuring double-layer back paint, this coating offers excellent corrosion resistance, scratch resistance, and processability. It is mostly used for single-layer pressboards, but its adhesion is not as strong, making it less suitable for sandwich panels.
Colour Coated Coil Coating Types:
Silicon Modified Polyester (SMP) Provides good film hardness, abrasion and heat resistance, along with excellent exterior durability and resistance to chalking. It maintains gloss well and offers general flexibility at a medium cost.
High Durability Polyester (HDP) Features excellent color retention and UV resistance, superior outdoor durability and chalking resistance, good film adhesion, vibrant colors, and exceptional cost performance.
Polyvinylidene Fluoride (PVDF) Boasts outstanding color retention and UV resistance, exceptional outdoor durability and chalking resistance, excellent solvent resistance, good formability, and dirt resistance. It has a limited color range and is high cost.
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Polyester Offers good adhesion, vibrant colors, a wide range of formability, and outdoor durability. It has medium chemical resistance and is low cost.
Detailed Parameters:
| Pre-Painted Galvalume Steel Coils |
| Commercial Quality Steel | ASTM A755M-03 | EN10327-2004 | JIS G 3322:2012 |
| CS | DX51D+AZ | CGLCC |
| Structural Quality Steel | SS GRADE 230 | S220GD+AZ | CGLC340 |
| SS GRADE 255 | S250GD+AZ | CGLC400 |
| SS GRADE 275 | S280GD+AZ | CGLC440 |
| SS GRADE 340 | S320GD+AZ | CGLC490 |
| SS GRADE 550 | S350GD+AZ | CGLC570 |
| | S550GD+AZ | |
| Pre-Painted Galvanized Steel Coils |
| Commercial Quality Steel | ASTM A755M-03 | EN10327-2004 | JIS G 3312:2012 |
| CS | DX51D+Z | CGCC |
| Structural Quality Steel | SS GRADE 230 | S220GD+Z | CGC340 |
| SS GRADE 255 | S250GD+Z | CGC400 |
| SS GRADE 275 | S280GD+Z | CGC440 |
| SS GRADE 340 | S320GD+Z | CGC490 |
| SS GRADE 550 | S350GD+Z | CGC570 |
| | S550GD+Z | |
| SPECFICATION |
| | PRE-PAINTED GALVANIZED STEEL COIL | PRE-PAINTED ALUZINC STEEL COIL |
| Thickness | 0.15MM--1.50MM(BMT) | 0.15MM--1.50MM(BMT) |
| Width | 900MM-1340MM | 900MM-1340MM |
| Zinc/AZ | 30g/m2-275g/m2 | 30g/m2-185g/m2 |
| Base Metal | Galvanized Steel Coil | Galvalume/ Aluzinc Steel Coil |
| Paint Coating System | POLYESTER(PE),RMP, SMP,Super-SMP, HDP,Super HDP, PVDF |
| Color | RAL / Customized |
| Coil weight | 1.5MT-10MT |
| Coil ID | 508MM OR 610MM |
| * HARD QUALITY GALVANIZED STEEL(HRB75-HRB90) AVAILABLE ON CUSTOMER'S REQUEST |
| Coating performance |
| CATEGORY | T Bending | Impacting | Salt spray test(hours) | MEK | Hardness | Gloss 60° | Color Tolerance ΔE |
| PE | ≤3T | ≥9 | ≥500 | ≥100 | ≥F | 10-85 | ≤0.8 |
| SMP | ≤3T | ≥9 | ≥500 | ≥100 | ≥F | 10-85 | ≤0.8 |
| HDP | ≤2T | ≥9 | ≥1000 | ≥100 | ≥HB | 10-85 | ≤0.8 |
| PVDF | ≤2T | ≥9 | ≥1000 | ≥100 | ≥HB | 10-85 | ≤0.8 |
Test Process & Results:
Paint Suppliers & Partners:
We only choose the top-level paint suppliers for our pre-painted steel coils and sheets,
AkzoNobel, Sherwin-Williams Valspar, Beckers, PPG Industries, Nippon, KCC are our solid paint suppliers.
Their best paint materials decide our steel coils quality.
Package & Delivery Shipment :
Delivery time: 30 days deliver to loading port
Shipment Methods: Container, Breakbulk, Railway, Trucks
Projects:
Why Choose Us:
DECHO building color steel plates are ideal for use as raw materials in construction. DECHO Building Materials color steel plates are primarily processed into products such as color steel corrugated boards or color steel composite sandwich boards. These products are widely used in the construction of airports, freezers, steel plants, warehouses, and other industrial and commercial buildings. Applications include color steel tile roofs, color steel plate sandwich walls, and doors.
Reasons for choosing Decho Building Materials new material:
- Provide extremely rich colour choices
- The paint surface is long-lasting and bright
- Surface coating will not fall off after stamping and has good hardness with strong ductility and is not easy to scratch.
- with excellent weather resistance, corrosion resistance, is to ensure the durability of the premise of the building
- DECHO BUILDING MATERIALS for the manufacturer direct sales
- The colour is customized by customers;
- Thickness and width have a variety of options;
- We provide whole rolls and cut boards for sale;
Welcome to enquire.
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