Made with a mixture of metal alloys: mostly copper and zinc, as well as small amounts of lead, tin, manganese, nickel, aluminium or iron. Brass fittings used for potable water usually have approximately 62-65% copper, 30-35% zinc and very small percentages of tin and lead.
Composite pipes are made from unreinforced thermoplastics like high density polyethylene (HDPE), polyvinyl chloride (PVC), polypropylene (PP), fiber reinforced plastics (FRP), and glass reinforced plastics (GRP).
Tolerant of high temperature- Brass is the best fitting material for hot water distribution systems, as they provide exceptional conductivity of temperature and improve hot water distribution system efficiency.
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