铝塑复合管的选购方法有：
The purchase methods of aluminum-plastic composite pipe include:
1、在选材之前一定要先看好用途。如果只用来输送冷水，那就可以使用非交联铝塑管。如果用于供应排放热水，那就一定要选用内外层交联的铝塑管。
1. Be sure to value the use before selecting materials. If it is only used to deliver cold water, then non crosslinked aluminum plastic pipes can be used. If it is used to supply and discharge hot water, it is necessary to select aluminum plastic pipes with inner and outer crosslinking.
2、要辨别优劣还有一个简单的小方法，我们可以用小刀割开最外层，观察外面的塑料层是否与紧挨着的铝层联结紧密。优质的铝塑复合管这两层黏合紧密，很难分开；反之如果这两层是分离的，那就表示其是劣质产品。
2. There is a simple way to distinguish the advantages and disadvantages. We can use a knife to cut the outermost layer and observe whether the outer plastic layer is closely connected with the adjacent aluminum layer. The two layers of high-quality aluminum-plastic composite pipe are closely bonded, which is difficult to separate; otherwise, if the two layers are separated, it means that they are inferior products.
3、从外观上也能分辨出优劣。优质铝塑复合管的表面光滑，并且管上的信息（规格、适用温度、商标、生产编号等）很全面，也很清晰。假冒伪劣产品上的信息不是不全，就是模糊不清的。
3. It can also distinguish the advantages and disadvantages from the appearance. The surface of high-quality aluminum-plastic composite pipe is smooth, and the information on the pipe (specification, applicable temperature, trademark, production number, etc.) is comprehensive and clear. The information on fake and inferior products is either incomplete or ambiguous.
4、在铝塑复合管中，铝层位于中间，但是它们也不容忽视。如果能够争取，一定要仔细观察一下铝层。为了保证使用效果，在铝层的搭接处，优质的铝塑复合管会有焊接，而劣质的铝塑复合管没有焊接。
4. In the aluminum-plastic composite pipe, the aluminum layer is in the middle, but they can not be ignored. If you can fight for it, you must carefully observe the aluminum layer. In order to ensure the use effect, the high-quality aluminum-plastic composite pipe will be welded at the overlap of aluminum layer, while the low-quality aluminum-plastic composite pipe will not be welded.