As the name suggests, carbon steel is made of carbon and steel. The alloy is cast or forged without seams that can compromise the strength of the material. Fittings of the same material are often used.
Following are some of the applications where different types of carbon steel fitting are used.
Carbon Steel Pipe
This kind of pipe is available in outer diameter sizes ranging from 1/8” to 72”. The thickness depends on the particular application the pipe will be used for. Carbon steel pipes are ideal for transporting gas in your home, moving large amounts of oil in pipelines, and moving liquids around in industrial environments. The pipe also has uses in geothermal settings.
Small Pipe Fittings
A carbon steel pipe with a 2 ½” interior diameter or less is often threaded and joined with carbon steel of the same size and thread configuration. Fittings made of carbon steel like threaded elbows at 450 and 900 are also used. There are available caps that you can use for shutting a line off. For awkward spots in gas lines, you can use Flanges and double release unions.
Large Pipe Fittings
Large-sized industrial carbon steel often comes with welded unions, except when it has a liner to prevent corrosion. The liner is typically made of fibreglass or plastic. This can be damaged when welded because of the heat. Large flanges made from carbon steel are used for lined pipe applications. They also use 1” nuts and bolts of the same material. While installation is comparatively more expensive than simple welds, it significantly reduces joint corrosions.
There are carbon steel T-joins with threads or flanges. They are available in various carbon steel alloys. For carbon steel pipes of up to 4” in diameter, there are slip and lap joins available. These can be used for a lot of applications – from gas lines in households to distribution of toxic liquids in industrial settings.
These are the standard applications where using fittings made of carbon steel are ideal.