Professional sheet (corrugated board): sheet dimensions, weight of a meter of length and square meter, marking and its decoding

We often hear and see what they make of roofs, sheds, fences. What kind of material is it that has such a wide range of applications. What are its arches and types, what sizes. And how the size of the profiled sheet affects its application.

What is a professional sheet

Profiled sheet is a building sheet material that is made from thin sheet steel. A relief is formed on the workpiece by cold stamping, and then a protective coating is applied. The relief is called a profile. Hence the name of the material - professional sheet. That is, a sheet with a profile. You can also find such a name as corrugated board. Some people think that professional sheet and corrugated board are different materials and there is a difference between them. But no. No difference. Simply in GOST, two brands are described as "for flooring". Hence, apparently, the name decking came from.

"Steel sheet bent profiles with trapezoidal corrugations for construction" - the name according to GOST 24045-2016. Conventionally, we can say that, if necessary, to cover the roof, we choose roofing profiles (corrugated board), and if necessary, sheathe the walls - wall profiles (corrugated sheet).

In general, this material has a lot of names. You can find a "sheet profile", a metal profile. Less common is the "profile sheet". There is also a name from the catalogs - profiled steel sheet. It's all about the same stuff.

It looks like a professional sheet with a colored coating

So, a profiled sheet is a steel sheet with a formed relief. A protective multilayer coating is applied to it. The number of layers and types of coatings differ and affect the final product characteristics. For durability, resistance to fading, to high or low temperatures, to chemical and mechanical stress. In general, many important properties depend on the coating and the quality of its application.

What is a professional sheet. It is sheet metal with a protective coating and a specially shaped profile

The professional sheet is different in purpose and it differs in relief. In the sense that the height and width of the wave, the distance between the peaks are different, and the shape is always a trapezoid. This is spelled out in GOST 24045-94. Only in some types (with increased bearing capacity), projections - shelves were added on the side faces, and additional grooves were formed in the ridge and groove. However, the profile is trapezoidal.

Profiled sheeting brands

Usually the corrugated board is made of sheet steel with zinc and aluzinc coating. If an aluzinc coating is used, an AC is put in the marking, if a zinc coating, nothing is put. If zinc is applied electrolytically, then put EOCP. Also, the sheet can be covered with a layer of aluminum (letters AL in the marking) or aluminum-silicon (AK). These coatings provide better protection, but they are expensive.

Profiled steel sheet with a protective coating - this is the corrugated board

In addition to various "primary" coatings, steel sheet products are used in various thicknesses. In combination with a different profile, it has a different load-bearing capacity, respectively, it has a different purpose and area of ​​application. By appointment, profiles are divided into types (GOST 24045-2016):

• H - for load-bearing floorings of coatings that take the weight of the roof with insulation and the load of climatic influences;
• НС - for decking and wall fences;
• C - for wall protections that perform bearing and enclosing functions.

Sometimes there is such a decoding of the designations of corrugated board, where type H is a carrier (for load-bearing floorings of coatings that take the weight of the roof with insulation and the load of climatic influences). He is the hardest, the toughest. From this corrugated board make roofs with high snow and wind loads.

Profiled sheeting brands and its purpose

NS - bearing wall. Another name is universal. Less "hardy", but can be used on the roof with low loads on it. It is also possible to build load-bearing walls from it (with sufficient thickness and depth of the relief). He is often "allowed" on fences that have no crossbars between the posts.

C - wall profiled sheet. Used for cladding frame walls. It is used in construction garages from corrugated board, utility rooms. The same type, but of sufficient thickness, can be attached to the fence if there are crossbars between the posts. This material is not recommended for roofing. Is that where there is almost no snow and wind. And then, the crate should be frequent, with small gaps.

Profiled sheet marking and its decoding

The marking of the profiled sheet is also described in GOST. It contains all the necessary data, except for weight. And so, there are all sizes of the profiled sheet, the name of the protective coating on both sides. But in order to read the decryption, you need to know at what position what characters are displayed. The appearance of the marking of the profiled sheet in the figure.

How to decipher the marking of the profiled sheet and where its dimensions are indicated here

The first position is the type of sheet. It is spelled out in the previous paragraph: C - wall, NS - universal, H - for flooring. The specific area of ​​application is not indicated, but this information is usually provided by manufacturers.

Profiled sheet dimensions and material

The second position will not raise many questions either. Here are the dimensions of the profiled sheet in millimeters. Only the order of magnitude is unusual. The height is indicated first. This refers to the height of the profile. Then comes the width and thickness of the metal sheet. The length is not specified, it is usually negotiated upon delivery, as it can vary widely. For example, H44-1000-0.8. This is a bearing profile with a wave height of 44 mm, a sheet width of 1000 mm, made of a metal sheet 0.8 mm thick.

Such professional sheet is recommended for a fence... Please note that the higher the profile height, the stiffer the fence will be. Well, the thickness of the sheet also plays a role.

In the third position there are letters by which you can determine the material of the workpiece. That is, which primary protective coating was applied to the metal sheet:

• If the steel is galvanized, it costs nothing.
• Electrolytic galvanizing - EOTsP.
• Aluminum zinc coating - AC.
• Aluminum coating - AL.
• Alumo-ceramic - AK.

For example, Н57-750-0.8 AL. With the dimensions of the corrugated board, everything is clear: sheet height 57 mm, width 750 mm, steel thickness 0.8 mm. The letters AL denote aluminum coating. This is probably also understandable.

Paintwork

The fourth and fifth positions reflect the type of paint applied. All types of paints and primers allowed by GOST are shown in the table. It also displays the resistance to chemical attack depending on the type of primary protective coating on the metal.

But the standard was developed a long time ago, and GOSTs are rarely updated. During this time, polymer coatings, more reliable than paints, have appeared. Roughly speaking, polymer-coated profiled sheet does not apply to standard ones. But sheets with a polymer coating are more resistant to fading, better withstand weathering, ultraviolet light, and more resistant to mechanical stress. So don't say they are bad. Expensive. Yes. But the performance is better.

The coating cannot be identified by its appearance. You can only distinguish galvanized from painted

Such other coatings can be:

• Pural. It is designated PUR. High resistance to mechanical stress, abrasion.
• PVDF. Polyvinylidene fluoride. High UV resistance. Good for roofs.
• PVC (or PVC). Polyvinyl chloride. High degree of corrosion protection. Good in regions close to the sea.
• AC. Acrylic. The most inexpensive polymer coating. In relation to the above, it is inferior in resistance to fading and degree of protection.

In general, the marking of the profiled sheet itself and what it hides was considered. The most interesting thing is that usually only the first two positions are indicated. For example, C 18-100-0.9, HC 44-100-0.6. The rest must either be looked at in the description, or asked by sellers and dealers.

Profiled sheet dimensions and weight

In general, enterprises produce a professional sheet not only according to GOST, but also according to TU. TU is the technical conditions in which the manufacturer states its dimensions and quality requirements. It is not that difficult to register them. But this is not GOST and there can be anything you want. If you see TU in the marking or in the accompanying documents, it is better to read it so that there are no surprises. And in the standard there are not so many profiles and sizes of a profiled sheet, which is why TU is used. Consumers demand different sizes and profiles. The table shows the grades and dimensions of the profiled sheet in accordance with GOST, and in the figure, more drawings and appearance are added. By the way, sheet thickness with * is not a standard.

Drawing of the profiled sheet and appearance, sheet width and thickness

In the table, everything seems to be clear. The dimensions of the profiled sheet are indicated in the same way as prescribed in the standard: profile height, sheet width and metal thickness. Length - by agreement or by the manufacturer's capabilities. Questions may be where the width is a fraction. For example, 1022/1000. The first number is the total width for wall cladding, the second is the working width for roof mounting. As you can imagine, this is a dual-use material. It can be used both on the roof and for wall cladding.

For comparison, see what sizes of professional sheet they can offer, and compare with what the GOST prescribes

It is worth saying that if the parameters of the profiled sheet do not correspond to GOST, this does not mean that the material is bad. It is necessary to look at the quality of the coating, the rigidity of the sheet. In any case, it is worth looking for reviews on the products of a particular manufacturer. Because the standard ones can be made not so well. It's all about the quality of the steel and coatings.

How to define quality

First of all - external examination. The quality of the application of paint, polymer or zinc is the first indicator. There should be no sagging, sagging and bald spots. GOST permits the presence of abrasions and small scratches that do not damage the integrity of the protective layer. That is, if the scratch has not reached the metal, this is normal. This happens all the time during transportation.The main thing is that the coating is intact.

One of the indirect indicators of the quality of the profiled sheet is its weight. Reference values ​​are indicated in GOST (available in the table). If the weight is significantly lower, this means that a thinner sheet or less dense (and cheaper) metal is used.

A direct evidence of the manufacturer's reliability is the sheet thickness. If the declared thickness is correct, this is a good sign. How to measure the thickness of the profiled sheet? Using an electronic caliper. Not such an expensive tool, but easier to use. If you have a regular one, you can take measurements with it. But keep in mind that the real thickness - with a layer of paint or polymer - should be at least a little (a few micrometers) larger than the stated one. This difference will be shown by an electronic device. A mechanical one cannot cope with such a task.