... cm2),It also features shockproof.5.High flexility,anti-cold and anti-expanding.6.Good heat resistance:low heat ... most durable tube with life-span of 50years.Applications:1) Cold, heat drinking water ductwork (houses, hospitals, schools and ... production transporting systems3) Chemical fluid transporting systems4) Hot water recycling system (hotspring, water heater, solar water heater)5) Agriculture, ...