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目前使用的供水管道主要有三大类。第一类是金属管,如内搪塑料的热镀铸铁管、钢管、不锈钢管等。第二类是塑复金属管,如塑复钢管,铝塑复合管等。第三类是塑料管,如 PP-R(交联聚丙烯高密度网状工程塑料)。国家还规定各种涉及饮用水管道的管子和配件,必须有卫生部门的批件,方可销售。作为供水管道,要求卫生、安全、节能、方便。因此检验一种管道,应从四个方面查起。卫生: 管道及配件须对人体无任何损害。安全:有足够的强度和优异的力学性能以及抗老化、耐热等性能。节能:内壁光滑,耐腐蚀,对流体阻力小, 保温性能好。方便:联接、施工方便,可靠,具有推广使用的可能。
There are currently three main types of water supply pipelines currently in use. The first category is the metal pipe, such as the inner enamelled plastic cast iron pipe, steel pipe, stainless steel pipe. The second category is plastic complex metal pipe, such as plastic composite pipe, aluminum-plastic composite pipe. The third category is plastic pipe, such as PP-R (cross-linked polypropylene high density mesh engineering plastics). Countries also require a variety of pipes and fittings involving drinking water pipelines, must have the approval of the health authorities, before sale. As a water supply pipeline, requiring health, safety, energy saving and convenience. Therefore, testing a pipeline should be checked from four aspects. Health: plumbing and accessories to the human body without any damage. Safety: adequate strength and excellent mechanical properties as well as anti-aging, heat resistance and other properties. Energy-saving: Smooth inner wall, corrosion-resistant, small resistance to fluid, good thermal insulation performance. Convenience: connection, construction convenient, reliable, with the promotion of the use possible.