The quality of PU insulated pipes produced by different manufacturers is also different, so when purchasing products we also need to distinguish product quality according to certain methods. Below, let us take a detailed look with the editor at how to distinguish the quality of pipes.
1. First, when touching by hand, a quality product has relatively uniform surface granules, whereas inferior products often have uneven granule sizes and may even feel rough or uneven to the touch.
2. When listening, note that quality pipe produces a relatively dull sound when dropped.
3. Good-quality pipes have no special odor when smelled. Of course, some acidic odor may be smelled at the pipe opening; this is relatively normal and is the smell of ammonia in it. However, inferior PU insulated pipes will smell of various strange odors when smelled.
4. Product hardness can be tested with external force; this can be adjusted according to the relevant specified standards.
5. Quality pipe produces some white smoke during installation, but the smoke has no pungent odor; inferior pipe emits gray smoke during hot-melt joining, and the odor is relatively pungent.
6. Such pipes generally follow unified standards, so quality pipes meet the specified wall thickness when measured, whereas inferior pipes often fail to meet the relevant thickness standards.
The above are methods for distinguishing good from poor PU insulated pipe when purchasing. In practice, you still need to look carefully and observe more, so that you can notice the differences among pipes.
