Mounting dowels are a type of expansion bolts. These are basic fasteners, commonly used in the construction and installation industry. They enable fastening to any type of substrate: from concrete and wood, through plasterboard, to walls made of solid brick or hollow bricks. Modern products available on the market are characterized by high load-bearing capacity. They can withstand even heavy loads. Expansion bolts are most often made of plastic or metal. Are you wondering which dowel to choose for a given fastening case? Read the guide prepared by experts from the Onninen wholesaler.
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Types of anchoring dowels in the surface
A dowel is a type of expansion plug. It is a connecting element. It is used in the assembly and installation of screws, bolts or pins in a wall, floor or ceiling - regardless of the material of the substrate. The dowel (pin) is placed in a previously drilled hole. As the screw/bolt is screwed in or the pin is pressed in, the expansion plug increases in size and closely adapts to the hole. The resulting connection is characterized by very good strength.
There are several types of anchoring of dowels in the surface.
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The first method of anchoring is friction fastening. The expansion element of the dowel or anchor is pressed against the wall of the hole. As a result, it transfers external loads by friction. - The second type of anchoring is a form-fitting. The dowel has a special form that allows it to be inserted into a given substrate or hole. There it twists, taking on a characteristic shape and providing a stable attachment. A universal expansion plug, designed for a variety of substrates, is often attached in this way.
- The third type of anchoring – material, requires the use of mortar or synthetic resin. These materials are used to bind the dowel to the substrate. The resulting connection is highly resistant to loads and damage.
Easier and more efficient installation of windows with metal dowels
Metal dowels are commonly used for installing windows and doors in concrete, brick and many other surfaces. They are used by almost every company installing window and door joinery. They affect the quality, comfort, speed and economy of the work performed. A metal dowel with a suitably long expansion zone, made of high-quality galvanized steel, provides strong, durable and stable fastening. When it comes to the process of installing door frames using dowels, you should start by drilling holes using a drill of the appropriate thickness (appropriate to the size of the dowel), taking care not to damage the edges. Then you need to clean the holes thoroughly. For the safety and durability of the entire project, it is recommended to use dowels and screws only from proven manufacturers.
Durable and solid connections with concrete dowels
Concrete dowel , as the name suggests, is designed for fastening various objects in concrete substrates. It is mainly used in construction works. It guarantees extremely solid, durable and immovable connections. Dowels differ from concrete anchors in their greater stiffness. This means that the object mounted on the dowels cannot move freely. When buying concrete dowels, it is necessary to pay attention to the material of manufacture.
They must be resistant to the destructive effects of external factors, especially moisture. The optimal choice will be stainless steel, and in special cases - acid-resistant steel. The so-called acid-resistant steel is resistant not only to corrosion, but also to aggressive chemicals, such as acids and brine. In the case of walls made of the currently popular aerated concrete, universal dowels or specialist elements dedicated to this type of substrate can be used.
Dowels at the Onninen wholesaler
In the Onninen electrical installation wholesaler , a wide selection of dowels and all other fasteners for various applications awaits individual customers and professionals. We offer both universal dowels, as well as models dedicated to specific substrates, such as the previously mentioned concrete dowels. Regardless of whether you are looking for dowels for securing cable ducts or you need an expansion dowel whose sleeve is made of a strictly defined material, on Onninen.pl you will find the right products for the planned installation work.
Still have doubts about which dowel to choose? Don't hesitate to call or write! Onninen experts are here to help you. We will help you make the right decision and advise you on how to use the dowels from our offer.