Pipes for water and gas: application and properties
Pipes for water and gas are a special kind of steel products that have a cylindrical shape and are manufactured according to standards on pipe-rolling mills.
They have increased resistance to mechanicalimpact, high performance and durability. Are able to withstand for long periods the effect of liquids and gases passing through them.Along with this, water and gas pipes have wide possibilities for welding and bending. At the same time, the price of materials is quite affordable.
Steel water and gas pipes are made ofhigh-quality low-alloy or carbon steels. The constituent chrome, manganese and other elements give the products additional qualities - increased wear resistance, strength, and also increase their welding properties.
In addition, modern technologies allowInclude impurities in the composition of pipes made from high-alloy steels. The use of additional processing and application of special bituminous and polymer coatings to products increase their resistance to aggressive media. The zinc coating gives the materials even greater strength, resulting in galvanized water and gas pipes, which have a higher mass.
Tubular products are used in the field ofconstruction of gas pipelines and water supply systems. They are used to create heating structures, as well as for the production of gas and waterworks.
Pipes made of water and gas welded withcut or rolled with or without thread, while the chemical composition and mechanical properties are not standardized. At the request of the customer for products with a passage more than 10 mm thread can be applied to both ends. It can be short and long.
The rest have an enhanced seam and are electrically welded. Pipes for water and gas can be dimensional (4-12 meters), multiple of the measured length (with allowances for thread) and non-dimensional.
By the accuracy of production, water and gas pipes are divided into products with ordinary and increased accuracy.
Galvanized water and gas steel pipeshave increased corrosion resistance. They are made by immersion in a zinc solution, while the zinc coating remains on the outer surface of the metal tube. The difference in the weight of the galvanized pipe is about three percent compared to the conventional one.
These pipes have a fixed diameter, which should be used when choosing the product. The outer diameter can vary depending on the thickness of the walls.
Pipes for water and gas are verycommon building material, but they have a significant drawback - they are subject to aging. Over time, products lose their strength and elasticity. Alternatives to steel pipes are products made of polymer materials or plastic pipes. Nevertheless, at construction of industrial objects of replacement to steel pipelines yet does not exist.