Galvanized sheet steel, polymer coated, HK, GK

Description

Galvanized roll with polymer coating is produced from galvanized rolled metal using the cold or hot method.
For production, the GOST 52146-2003 standard is used, which regulates the production of sheet products with a polymer protective layer. offers to buy galvanized rolls with polymer coating at a competitive price with delivery from the warehouse. This is a high-quality material, presented in a large assortment and having a decorative and protective color coating according to the RAL catalog.

Advantages and disadvantages of polymer-coated corrugated sheets

The advantages of painted corrugated sheets include:

• highly decorative;
• the ability to paint in any color palette: in monocolor, with a pattern, pattern, stylization of natural materials;
• increased corrosion resistance and weather resistance;
• improved protection against exposure to aggressive substances.

Painted corrugated sheeting is available with one and two-sided polymer coating. Various powder paints are used for painting. The cost of the products depends on their type. All polymer coatings make products aesthetically pleasing and more resistant to atmospheric factors.

The decorative coating has varying degrees of gloss. This allows you to select the building material that is optimal in appearance. They can be painted with matte paint, gloss, silk and other textures. This makes it possible to obtain truly elite buildings and structures when using painted profile sheets.

Disadvantages of painted corrugated sheets:

• More expensive in price. The better the coating, the more expensive the product. You can inexpensively buy painted corrugated sheets with a polyethylene layer. Corrugated sheets that are painted with PVDF or plastol are more expensive. Externally, it is difficult to distinguish them. The main feature is increased mechanical strength and chemical resistance.
• Relatively low resistance to mechanical damage. The polymer coating may crack due to impact or deformation of the metal.
• Not maintainable. A sheet with a damaged decorative layer must be replaced.

Features and Specifications

Polymer-coated steel coils are produced from various grades of steel, usually 08PS, 08Yu, 08KP, 1PS, 2PS, 3PS and others. Product Specifications:

• metal thickness: 0.2-1.2 mm for cold-rolled sheets, 0.4-1.2 mm for hot-rolled;
• width: 700-1650 mm with a weight of 3-15 tons for one roll;
• the internal diameter of the roll is 500-600 mm;
• zinc coating – 100-275 g/sq.m.;
• coating – glossy or matte polymer, the thickness of the polymer coating depends on its type;
• edge – unedged or trimmed;
• color – according to RAL card;
• type of coating – single-, double-sided, multi-layer, single-layer.

The grease base of the roll fully complies with the established standards: EN 10130 (when using steel grades DC04, DC03, DC01), TU 14-101-496 (with different stretchability), GOST 9045, 16523 (determines the strength group). Production complies with GOSTs 16523-97, 9045-93, 19904-90. A polymer-coated roll is a blank for further processing, production of corrugated sheets, stamping, and roofing materials.

For production, hot-rolled or cold-rolled methods are used, galvanizing is only hot (corresponds to GOST 14918-80). The thickness of the zinc coating is 100-140 g/sq.m. and more.

Polymer-coated steel sheets are highly resistant to corrosion, ultraviolet rays, temperature changes, chemicals or physical influences. The polymer can withstand mechanical stress, it is resistant to fading, the coating itself can be smooth, embossed, matte, or with a glossy sheen.

Advantages and disadvantages of galvanized sheeting

Among the advantages of galvanized corrugated sheets, the following should be highlighted:

• Good corrosion protection properties.
• Durable protective coating.
• Relatively low price - cheaper than painted ones.

Galvanization ensures high resistance of the product to rust. The material retains these properties throughout the entire warranty period. To maintain rust resistance, proper operating conditions must be provided.

Sheets are galvanized using the electrolytic method. It allows the zinc to firmly adhere to the metal. Under mechanical, shock loads and surface deformation, the risk of damage to the protective coating is small.

Due to the absence of the need to paint the original sheet with expensive paints and varnishes, production costs are lower. This also explains the cheaper cost of galvanized corrugated sheets in Moscow.

The disadvantages of galvanized corrugated sheets can be identified as follows:

• low decorativeness;
• less resistance to aggressive environments;
• relatively short service life - from 10 to 15 years.

Areas of application

Rolled galvanized steel with a polymer coating is used in various fields: the production of profiled roofing systems, elements of drainage systems, fences and fences, bent profiles, and additional elements. In construction, the products are used for the production of metal tiles and corrugated sheets, in industry and instrument making - for the production of external panels and their casings.

Also, polymer-coated steel coils are used in the automotive industry, for the production of facade systems, finishing materials, and stamping. When selecting products, it is important to consider thickness, sheet dimensions, paint type, and specific material characteristics, including zinc coating and polymer thickness.

Galvanized sheets with polymer coating. What is the difference from painted ones?

When purchasing polymer-coated steel products, many do not understand how they differ from painted ones. After all, in fact, polymers are used in both cases, and they protect steel from external influences. This is all true, but in fact there is a significant difference between the treatment called polymer coating and painting.

Manufacturing technologies

The most important difference is in the technologies used. High-quality coated steel is produced exclusively in factory conditions, using industrial equipment. Our company purchases polymer-coated steel from well-known metallurgical plants, which carry out the entire production cycle, from metal rolling to packaging.

Later, in our production, the rolled steel is covered with a protective film, cut into sheets of the required size and delivered to the buyer.

Since we cooperate with leading metallurgical plants, we are confident in the quality of the material. The grade of steel used is one that has the best characteristics in terms of the production of roofing materials - strength, elasticity, thickness.

Before being coated with polymers, the steel is galvanized - a layer of zinc protects the metal from corrosion. At the same time, GOST standards clearly define the thickness of the zinc coating, and those manufacturers with whom we work strictly comply with the standards.

Another, no less important point is the application method and thickness, type of polymer coating. Even if the same raw materials are used, the technology of its application is of great importance. It is possible to achieve an even, sufficient layer thickness with the required characteristics only in modern production conditions, which are provided at large metallurgical plants such as NLMK and Severstal.

But, in addition to a quality product, there is also an economical option. It is manufactured mainly on Chinese equipment and does not always comply with GOST requirements. The cheapest steel is used, from which thin sheets are formed, the thickness of which is clearly lower than required, from the point of view of the production of metal tiles or corrugated sheets.

Such manufacturers also save on galvanizing - it is carried out, but the zinc layer is too thin (40-60 grams/m2). This steel can be used for interior work, but not for making roofing materials. Even during the process of forming metal tiles, the paint begins to crack. During the operation of the roof, the paint peels off due to violations of the technology for applying a polymer coating and preparing rolled steel before painting, which leads to rapid corrosion of the steel - a thin layer of zinc cannot fully protect it from precipitation, and a poor-quality coating can fade.

What is a polymer coating? This is a polymer painting process in which a polymer consisting of a mixture of pigments and other components is applied to steel. Polyester is applied in an even layer, after which it is heated. As a result, the polymer dries, forming a film on the metal.

Differences in polymer coatings

Now - about the difference between coating steel with a polymer coating in a large metallurgical enterprise compared to a small enterprise, as well as powder coating. The polymer coating, which is applied in a small enterprise, has a coating thickness of 18-20 microns, and not 25-30 microns as required by GOST. It is also impossible to prepare the galvanized coating before painting in compliance with all GOST requirements (washing, drying). The quality of the coating applied to an unprepared surface leaves much to be desired. The most common defects include sagging and variations in coating thickness. The advantages of this color include:

• efficiency
• dyeing speed
• medium corrosion resistance
• large selection of textures and colors

Flaws:

• low durability and average coating quality

In the conditions of large metallurgical plants NLMK and Severstal, the application of a polymer coating on galvanized steel fully complies with all GOST requirements, from the preparation of galvanized steel before painting, to the packaging of the finished product. At all stages of production, strict quality control of the polymer coating is carried out. At the same time, galvanized steel with a polymer coating is much cheaper than imported analogues and is not inferior in quality.

Advantages:

• high elasticity (steel is suitable for cold forming, without the risk of compromising the integrity of the polymer layer)
• sufficient thickness and uniform coloring
• resistance to various weather factors
• high corrosion resistance
• low cost

Flaws:

• less choice of colors and textures compared to the choice of colors in small businesses

Powder coating has also become widespread. This is a “dry” painting process in which a powder consisting of a mixture of polymer (polyester), pigments and other components is applied to the steel. The powder is applied automatically or manually to the finished product, after which it is heated. As a result, the polymers melt, forming a film on the metal. This coating has the following advantages:

• significant selection of textures and colors
• high resistance to external influences
• significant coating thickness

But there are also disadvantages:

• variation in coating thickness
• its low elasticity (steel is not suitable for further stamping without the risk of compromising the integrity of the polymer coating layer;
• high price
• shagreen covering
• low corrosion resistance

To summarize the comparison, we can conclude that each method of applying a polymer coating has its own advantages and disadvantages, which can be leveled out depending on the purpose and requirements for the finished product, as well as the budget allocated for construction.

TYPES OF COATINGS

The company offers polymer-coated rolls of various types:

• TWEED50 is a 50-micron polyurethane coating that has a velvety-matte structure and provides a 25-year guarantee of trouble-free roof operation;
• TIAR35 is a 35 micron thick semi-gloss polyurethane coating with a 20-year service guarantee. TIAR35 is a premium quality polyurethane coating at an affordable price;
• KEVAR – matte polyester coating with a thickness of 30 microns, provides natural color rendering, protects the material from ultraviolet radiation and the adverse effects of external factors;
• SKARDEX is an innovative high-quality polyester coating of 25 microns, which contributes to the long service life of roofing materials due to increased resistance to wear and abrasion;
• SKARDEX cupro is a glossy coating in the color of noble copper with a thickness of 28 microns, which will add unique elegance and exclusivity to your roof;
• SKARDEX matt is a matte polyester coating with a thickness of 30 microns, which is reinforced with polyester resins and is resistant to mechanical stress and UV radiation. The structure of the coating imitates the natural properties of lotus and has excellent self-cleaning qualities when washed by heavy rains;
• SteelArt - in addition to the attractive design of the coating, it also has a multi-layer structure, which ensures the material’s resistance to corrosion, ultraviolet radiation, and mechanical stress;
• Coral is an environmentally friendly matte coating produced by NLMK based on polyester, which helps protect materials from ultraviolet radiation, precipitation, and mechanical damage.

The price of metal in polymer-coated rolls depends on the type of coating, the thickness of the metal, the amount of zinc per square meter and the volume of purchase. Delivery is carried out in Moscow and regions of the Russian Federation.

Galvanized steel with a polymer protective and decorative paint coating (polyester) in rolls

Price list

according to STO07

Since 2004, State Enterprise Steel Structures has been painting coiled steel on its own line for applying polymer coating using the roller method using materials from well-known brands AKZO NOBEL and BASF, which ensures high-quality and durable coating.

The products we produce are used for the manufacture of building metal structures, sandwich panels, roofing tiles, corrugated sheets, instrument housings, electrical appliances, etc. It is highly resistant to atmospheric corrosion, has a decorative appearance and combines strength and ductility.

Due to our own production of paints and varnishes, we produce the widest range of colors of painted metal in the shortest possible time, in minimal quantities.

We paint colors according to the RAL catalog:

9018, 9017, 9016, 9011, 9010, 9006, 9005, 9004, 9003, 9002, 9001, 8028, 8025, 8024, 8023, 8022, 8019, 8017, 8016, 8015, 8014, 8012, 8011, 8008, 8007, 8004, 8003, 8002, 8001, 8000, 7047, 7046, 7045, 7044, 7043, 7042, 7040, 7039, 7038, 7037, 7036, 7035, 7034, 7033, 7032, 7031, 7030, 7026, 7024, 7023, 7022, 7021, 7016, 7015, 7013, 7012, 7011, 7010, 7009, 7008, 7006, 7005, 7004, 7003, 7002, 7001, 7000, 6034, 6033, 6032, 6029, 6028, 6027, 6026, 6025, 6024, 6022, 6021, 6020, 6019, 6018, 6017, 6016, 6015, 6014, 6013, 6012, 6011, 6010, 6009, 6008, 6007, 6006, 6005, 6004, 6003, 6002, 6001, 6000, 5024, 5023, 5022, 5021, 5020, 5019, 5018, 5017, 5015, 5014, 5013, 5012, 5011, 5010, 5009, 5008, 5007, 5005, 5003, 5002, 5001, 5000, 4010, 4009, 4008, 4007, 4006, 4005, 4003, 4002, 4001, 3031, 3027, 3022, 3020, 3018, 3017, 3016, 3015, 3014, 3013, 3012, 3011, 3009, 3007, 3005, 3004, 3003, 3002, 3001, 3000, 2012, 2011, 2010, 2009, 2008, 2004, 2003, 2002, 2001, 2000, 1037, 1034, 1033, 1032, 1028, 1027, 1024, 1023, 1021, 1020, 1019, 1018, 1017, 1016, 1015, 1014, 1013, 1012, 1011, 1007, 1006, 1005, 1004, 1003, 1002, 1001, 1000

Minimum order quantity:

from 200 l.m.
Completion time:
from 2 days!

Rental range:

• steel thickness: from 0.4 to 1.2 mm;
• roll width: 1100, 1250 mm;
• types of coatings: enamel/primer, enamel/enamel, primer/primer;
• roll weight: according to the Customer’s request;
• internal diameter of the roll: 600 mm.

Raw materials for painting:

galvanized steel in rolls according to GOST 14918-80 and GOST R 52246-2004.

Additionally:

• It is possible to paint cold rolled steel coils.
• We make colors according to the client's order.
• We carry out delivery using our own vehicles.
• We pack the roll in a Euro pallet for transportation.
• We apply a protective film.

Price lists