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what are pipes made of

Common Pipe Materials Used in the Home

Your home plumbing system will have different types of piping materials for different uses, including freshwater supply, waste drainage, irrigation, gas pipes for appliances, and so on. Which type is used in which application will largely depend on the age of your plumbing system? An older plumbing system may be dominated by cast iron and galvanized iron, while a new home will have plastic pipes of various types used almost exclusively.

Some plastic pipes used in plumbing (such as PVC and CPVC) may also be used in the venting of high-efficiency condensing furnaces. However, this will be an overview of pipe materials for use in plumbing applications. These are the most common types of plumbing piping materials found in homes of different ages, what they are used for, and an overview of how to cut and fasten them together. Here are types of plumbing materials used in piping for waste lines, water supply pipes, and natural gas supply:

  • Cast iron for plumbing waste lines
  • PVC (PolyVinyl Chloride) for plumbing waste lines
  • Chromed brass for plumbing waste lines
  • Chromed copper for water supply lines
  • Galvanized iron for water supply lines
  • Copper (rigid and flexible) for water supply lines
  • CPVC (Chlorinated Poly-Vinyl Chloride) for water supply lines
  • PEX (Cross-linked Polyethylene) for water supply lines
  • Black iron for gas pipes

This tutorial describes common types of piping materials found in homes and what they are used for.