Steel pipes and their properties.
The alloy of iron and carbon form one of the most durable compounds – steel. The main indicator affecting the structural characteristics of the metal is the percentage of carbon in the alloy. It is this indicator that affects the hardness, fragility and softness of the metal. The widest use of such alloys is the release of pipes of different diameters and purpose.
The produced steel pipe Voronezh according to the processing method is divided into suture and seamless, hot or cold pressing and deformation, electric welding of ferrous metal or galvanized. Also, for different needs, steel pipes of different sections are used: round, tetrahedral, or oval. The main advantage of steel pipes is their durability (several decades, depending on the environment), and the relatively inexpensive price.
Seamless pipes (heating and water supply in urban conditions with low pressure) were found the most widely used). The use of electric welding pipes, due to their greater durability, is most involved in gas highways and other pipelines, the pressure in which does not exceed 16 mPa. The main difference between hot -rolled and cold pipes of their diameter. In the first case, large diameter pipes are produced, and in the second small.
To increase anti -corrosion properties, and, accordingly, extension of the service life, the surface of the pipe is treated with zinc. To improve the quality of the pipe at the time of metal smelting, chrome is added. Chrome (made of stainless steel) pipe have an even longer service life.
The size of the produced pipe is determined by its functional purpose. If there are no specific restrictions, then the length of the pipe depends on the factory capabilities and transportation conditions. With a measured trim, the ends of the pipe are subjected either to rollering for a certain diameter, or thread cutting. The length of such pipes can be left from a few centimeters, up to twenty or more meters. Depending on the diameter, the manufactured steel pipes are classified into small diameter pipes (up to 115 mm), medium (from 116 to 500 mm), and large, diameter (exceeds 500 mm.). Pipes, the diameter of which exceeds 2500 mm, are not classified and have the status of special ordering.
Depending on the brand of steel from which the pipe is made, its functional purpose is determined. Experts note that the main advantage of such pipes is their simplicity in installation, strength, and an acceptable combination of price and quality