Difference between polypropylene & polyvinylchloride pipe

Polypropylene: lightweight, resists heat and chemicals. Used for rope, packaging, automobile parts, baby bottles, appliance parts, carpeting.

Polyvinyl chloride (PVC) is a strong, durable plastics material. It mixes easily with lubricants, fillers, and colorings to make plastics with many different properties. There are two basic types of PVC plastics--rigid and flexible. Products made of rigid PVC plastic include bottles, pipes, siding, and window sashes. Flexible PVC plastic products include rainwear, shower curtains, garden hoses, and electrical insulation.