PVC(Polyvinyl Chloride) pipe is a durable, lightweight plastic commonly used in plumbing, electrical conduit, drainage systems, and irrigation due to its resistance to corrosion, chemicals, and wear. It is easy to install, cost-effective, and available in various sizes and pressure ratings.

PVC pipes typically come in both imperial(inches) and metric(millimetres) sizes, but the two systems do not align perfectly, leading to issues when trying to use one for the other. The imperial system divides pipes into standard increments like 1/2", 3/4", and 1", while the metric system uses rounded measurements such as 20mm or 25mm.