Steel Pipe Specifications, Dimensions, and Maintenance Methods

Steel pipe is a type of hollow long steel used extensively as a conduit for transporting fluids, such as oil, natural gas, water, gas, and steam. Additionally, due to its light weight relative to its bending and torsional strength, it is also widely used in the manufacture of machinery parts and engineering structures. It is also commonly used in the production of various conventional weapons, gun barrels, and shells.

Understanding Steel and Pipe

Steel and pipe, as the name suggests, is a type of conduit that is manufactured from steel using various processing methods for different purposes in construction. There are many types of steel pipe wholesale, which can be classified according to their cross-sectional size as circular, square, rectangular, and irregular. Circular pipes are the most commonly used. They can also be classified according to their materials as welded spiral steel pipe, galvanized pipes, seamless pipes, and more. Generally, nominal diameter (DN) is used to indicate the size of the pipe. Commonly used pipe sizes include DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, DN300, DN400, DN500, and more.

Steel pipes are not just used for transporting liquids, but can also be used as protective conduits for cables and wires in electrical applications. In indoor construction, common materials used for potable water include PPR pipes and hot galvanized steel pipe, while for waste water, PVC-U pipes and galvanized pipes are more common. JDG pipes are generally used for wires, while welded steel pipes are more commonly used for cables. Steel pipes can be connected using threads, flanges, welding, or clamping. Different connection methods correspond to different usage purposes.

Steel and Pipe Specifications and Sizes

One inch of steel and pipe is divided into eight equal parts: 1/8, 1/4, 3/8, 1/2, 5/8, 3/4, and 7/8 inches. This is equivalent to what is commonly referred to as 1/8 pipe to 7/8 pipe. Smaller sizes are represented using 1/16, 1/32, and 1/64 inches, and the unit of measurement is still inches. If the numerator and denominator can be simplified (e.g. if the numerator is 2, 4, 8, 16, or 32), they should be simplified.

Steel Pipe Maintenance

  • Water cleaning: Water cleaning involves rinsing the inside of the steel pipe with water. However, it is ineffective in removing impurities such as calcium and magnesium ions and biological slime that adhere to the inside of the steel pipe.

  • Chemical cleaning: Chemical cleaning involves adding a chemical reagent to the water. However, the chemical components are corrosive to the steel and pipe and shorten its lifespan. This method is not recommended.

  • Physical cleaning: Currently, the most thorough method of cleaning involves using compressed air as a power source and firing a specially designed projectile larger than the diameter of the pipeline into the steel pipe. The projectile moves rapidly along the inner wall of the pipe, generating friction and thoroughly cleaning it. This method is highly effective and minimizes damage to the pipe.

Copyright © Steel Searcher All Rights Reserved.
+86 21 6010 0376