During the construction of temporary structures, the organization of formwork or the construction of a water supply of technical purposes, it is more advisable to use not a new metal rolling, but the former in use. Such metal products have high strength and wear resistance, and therefore are considered durable, safe and reliable building materials. If you believe the statistics, then the restored pipes of the BU are the most popular goods in the market, which is characterized by significant physical and technical characteristics and affordable cost. The main thing is to choose the right product.
By what criteria are the boat chosen?
Looking at the offers in the secondary market, it is worth paying special attention to the following moments:
The dimensions of the product. The wall thickness and length matters. The thickness determines the mass of the acquired pipe and the sphere of its future application. The thicker the wall, the stronger and more reliable the product, as well as more expensive;
Geometric parameters. In the secondary market, steel pipes are presented in the widest assortment: profile, round and so on. The shape of the product determines the conditions under which the restored structure can be operated;
Initial area of application. Most of the dismantled products have a minimum degree of wear. On the surface of the pipe can only be focal corrosion damage, which, after the recovery procedure, are completely eliminated. Their presence by only 7-18% reduces the physical and technical qualities of the product, and therefore its scope is large-scale, but it is no longer possible to use the pipe for its intended purpose. The smallest wear (less than 3%) has a rental, which was intended for laying gas pipelines and oil pipelines;
Recovery process. When buying a former design, it is necessary to ask about reconstruction issues. Whether the pipe has passed the recovery procedure and subsequent quality control (test).
The technical parameters of the product are also important. At the supplier of secondary raw materials, it is worth clarifying which class — seamless, straight -line or spirals — rolled a specific metal product.
What qualities does the metal supply have?
The main advantage of the former metallic structures is low cost. Given that at the same time they also have an impressive operational period, significant strength and reliability, then it is more profitable to not find the purchase more profitable. In addition, steel and restored pipes that were in use have:
Low deformation coefficient;
High resistance to aggressive environments;
Significant mechanical strength;
Ease of installation;
Stability to ultraviolet loads.
Having passed the recovery procedure, metal products do not require additional maintenance, which in conjunction with a small cost of products significantly reduces the cost of work.