First, the first step is to look at its appearance. From the color point of view, high-quality PVC pipe was light beige. If the pipeline color is too pale, then the product may be excessive calcium powder added, are substandard products; if the pipeline black, yellow, black spots that manufacturers may add too much in the product of miscellaneous materials, recycled materials. Also remember that high-quality PVC pipe surface is smooth and smooth, the wall is also very smooth, pipe fittings design precision, can achieve smooth and smooth internal surface connections, water supply and drainage are very smooth.

Second, weigh a weigh the sense of weight. Feel the weight of the PVC pipe to add more calcium, in accordance with national standards, different purposes of the implementation of the corresponding PVC pipe standards, add calcium powder has a certain limit, the performance of the finished product on the proportion. Some manufacturers in order to reduce costs and hard to add calcium powder, affecting other performance indicators.

The third step, test the hardness of the pipeline. The easiest way to do this is to test the quality of the pipe by pressing. Where the quality of PVC pipe hardness, toughness are very strong, that is, the use of car rolling, it will only flat will not be broken. In contrast, poor PVC pipes are mixed with excess calcium powder during production and are easily broken when subjected to heavy pressure.

Finally, test the product test report. Product testing report is the product quality of the visual presentation, regular manufacturers will regularly carry out product testing, the user can directly to the manufacturer to obtain product testing report, test true and false.

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