1、铝塑管，在两层塑料管中衬铝管，铝管通过搭焊和对焊两种方式焊接。优点：水质输送稳定、不结垢、耐腐蚀、柔韧性强、缺点：抗冲击力差，膨胀系数大、液压系数低、保温性和安全系数低。

1, aluminum plastic pipe, in the two layer of plastic pipe lining aluminum tube, aluminum pipe by lap welding and butt welding in two ways. Advantages: water quality is stable, no scale, corrosion resistance, flexibility, disadvantages: poor impact resistance, large expansion coefficient, low hydraulic coefficient, low thermal insulation and safety coefficient.

怎么样选购给水管

How to buy water pipes

2、塑料管，人们首先考虑的代用材料。但其强度、线性以及极端地区的温差条件等，都制约了其适用范围。

2, plastic pipes, people first consider alternative materials. However, its strength, linearity and temperature difference in extreme regions restrict its application.

3、超薄不锈钢塑料复合管，选用国际饮食卫生标准许可的304(Ocr18Ni9)超薄不锈钢，内衬不同耐温材质、符合国家生活饮用水输送管 要求的塑料管。它集金属材料表面硬度高、整体刚性好、线膨胀系数小和塑料管耐腐蚀、耐压、不结垢、输送水质稳定、卫生及隔热保温性能好等优点，更实用、经济、安全，使用寿命可达50年之久。

3, ultra-thin stainless steel plastic composite pipe, using the international diet hygiene standard permitted 304 (Ocr18Ni9) ultra-thin stainless steel, lined with different temperature resistance material, in line with the national drinking water transportation pipe requirements of plastic pipe. It sets the metal material with high surface hardness, good integral rigidity, low linear expansion coefficient and plastic pipe corrosion resistance, pressure resistance, no fouling, conveying water quality stability, health and good insulation and other advantages, more practical, economic, safety, long service life can reach 50 years.

4、铜塑管，铜管外包塑料。克服了钢管易变形、易爆裂、耐压耐热性能差的缺点。其不足之处：铜塑管和镀锌管同样由金属壁面与水直接接触，易产生铜绿。铜绿并非铜离子，而是一种对人体有害的化学物质。

4, copper plastic pipe, copper pipe wrapped plastic. The defects of easy deformation, easy burst, pressure resistance and poor heat resistance of the steel tube are overcome. The defects are: copper plastic pipe and galvanized pipe are directly contacted with water by metal wall, which is easy to produce patina. Aeruginosa is not a copper ion, but a chemical that is harmful to human health.