PVC is the third-most widely produced plastic, after polyethylene and polypropylene in the world. It is mostly used in construction because it is more effective than traditional materials such as copper, iron or wood in pipe and profile applications. PVC is preffered because: it is easy to process, water resistant, fire resistant, flame resistant, recyclable, cost-efficient, lightweight, durable, flexible, transparent, safe and has easy maintenance. Basically, it splits into two groups:
K-Value 57–60
K-Value 64–67
K-Value 69–72
K-Value 60–80
