Open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead. Synonyms: ambiguous; equivocal. Context examples:
Polyethylene has more demand however than polypropylene. Polypropylene is used extensively in the automotive industry as well as the packaging industry. 70% of the polypropylene uses is for packaging needs for the food industry. It can be made into bottles, food containers, food crates and pallets.
The major difference between these pipes is basically the difference in material and there properties. PVC, CPVC, UPVC and HDPE are non metalic pipes. They are made from thermoplastic materials. These fall under the category of Plastic pipework. Both pipes and fittings are available in these materials.