What is carbon steel pipe

The steel with slight quantity of elements other than carbon, silicon, sulphur and manganeses is called carbon steel. These are the alloyed iron with carbon as main constituent. The amount of carbon content in the steel pipe determines its hardness and strength but on other hand it makes the steel more ductile. The carbon steel is tougher to melt and the high carbon content reduces weldability as well. Based on the properties and alloyed elements, carbon steel can be classified into four classes. 

Carbon steel, the most widely used engineering material, accounts for approximately 85% of the annual steel production worldwide. Carbon steel is common or ordinary steel as contrasted with special or alloy steels, which contain other alloying metals in addition to the usual constituents of steel in their common percentages.

Made of ordinary carbon steel or high-quality carbon structural steel, steel pipe is called carbon steel pipe. Within the carbon steel pipe lined with a corrosion resistant material lining pipe can increase the range of use of the carbon steel pipe. 

Carbon steel is used in modern industrial earliest and the largest amount of the basic material. The industrial countries of the world, efforts to increase high strength low alloy steel and alloy steel production, is also very attention to improving the quality of the carbon steel, and expand the range of varieties and use. Proportion of carbon steel production in steel production in countries about maintained at about 80%, it is not only widely used in buildings, bridges, railways, vehicles, ships, and all kinds of machinery manufacturing industry, but also in the modern petrochemical industry , marine development, but also get a lot of use. 

The carbon content is less than 1.35%, excluding the other alloying elements of the steel, in addition to the silicon, manganese, phosphorus, sulfur and other impurities within the iron, carbon and limited. The performance of carbon steel is mainly dependent on the carbon content. Carbon content increases, the strength of the steel, the hardness increases, and reduces ductility, toughness and weldability. Compared to other types of steel, carbon steel using the earliest, low cost, wide range of performance, the largest amount. Suitable for nominal pressure PN ≤ 32.0MPa, temperature -30-425 ℃ water, steam, air, hydrogen, ammonia, nitrogen and petroleum products, and other media.