Shaped products made of cast iron and steel are widely used in the installation process of pipes. Without these elements, it is unlikely that it will be possible to design any sewage system or water supply system. It should be noted that the assortment of fittings is so wide that almost any configuration can be made of pipes.
Today there are companies that provide customers with all the necessary shaped products. To get acquainted with the assortment, it is enough to visit several specialized stores, pay attention to product catalogs.
What materials are suitable for production
Any shaped parts of the pipeline are made of steel (VChShG cast iron is also often used). Much depends on what specific pipes are used - made of the first or the last material. It's simple: if it is made of steel, then shaped products should be steel.
As practice shows, cast iron fittings are made mainly with sockets, which is why it is believed that this is the most popular type of pipe connection to each other. Although flanged cast iron products also exist. If we talk about shaped steel parts, then they can only be flanged.
What do modern companies offer?
As a rule, any company with a good reputation has in its arsenal a production department where shaped products are made. To obtain a caston made of cast iron, a material of the VChShG brand is used (high strength, with impurities of spherical graphite). The parameters of products from such raw materials are so good that the products can be used for a very long time - at least fifty years.
Top shaped parts are covered with different compositions. If the products are made of steel, then on the outside they are treated with a layer of soil, while using enamel, which is resistant to corrosion. The surface is not processed from the inside - this is prohibited by SNiP in order to avoid a negative impact on the quality of water that the population needs. If we consider cast-iron products, then everything is different - from the inside they are processed with a cement-sand composition, from the outside - with zinc paint or paintwork.
It should be noted that the sizes of sockets and flanges of shaped products fully comply not only with GOST 5525-88, but also with ISO 2531. Thanks to this, the products can even be used for installation works where pipes from foreign manufacturers are involved.
Classification of fittings
We figured out what shaped products are, now we should talk about the internal classification - it is in every type of product. That is, the common name "tee" combines several types of cuts at once, "release" - two, "transition" - four.
Consider the main groups - it all depends on the purpose of the connecting parts:
- Bends, knees, corners.
- Manifolds and tees.
- Transitions.
- Stubs.
- Flanges.
- Cast iron couplings.
- Other items.
Fasonina: etymology
In general, the connecting parts have a lot of different names. It is worth noting several phrases that designate the same product.
- Shaped products for installation (it is assumed that we are talking about the components from which, for example, water supply is made).
- Fitting - this concept came from the English language, can be translated as "fastening, installation, installation."
- Fasonina is the most concise and capacious designation of the assortment of products that are in demand during the installation of pipelines.
The term "cast iron" also exists - this word is used to refer to connecting elements made of cast iron, but the concept cannot be called completely correct. It has long been called decorative ornaments for fences and gates, as well as molding for Russian stoves. Shaped elements are not cast completely from cast iron, since their surface is quite complex.