Stronger than plastic piping, vitrified clay pipes are plain-ended and require couplings to hold the pieces together. Clay pipes are laid directly into a formed trench, and do not require the support of small gravel within the trench. Clay has the ability break apart easier than plastic, but it is an environmentally-friendly option and one of the oldest materials used for drainage systems
Plastic PVC or other high density polyethylene material is used for drainage piping systems. Plastic is lightweight and highly durable, and able to withstand corrosion due to it's rust-free properties. Held together through couplings or sockets, plastic is used in underwater and underground pipe systems. Plastic also has lower thermal conductivity as compared to metal, and is a cost effective option for drainage piping.
Corrugated stainless steel is a strong, high-quality option for drainage systems. According to the National Corrugated Steel Pipe Association (ncspa.org), this type of piping has a predictable service life, capable of surpassing 100 years. Hydraulically-sound, corrugated steel piping is environmental friendly and offers a high rate of flow for water and other liquids passing through the drainage system.
Cast iron drainage piping is held together with neoprene gaskets and specialized couplings, which reduce noise and vibration. This piping is used in septic and storm drainage systems given the material's high rate of performance, ease of installation and cost effectiveness. Cast iron is resistant to abrasion from soil and gravel, garbage disposal residue and debris found within sewer and drains. Cast iron is also a preferred choice for construction, as it is suitable for storm drainage systems located on roofs, within yards and in courtyard areas.