How to identify the quality of PVC drainage pipe?

Pipes are difficult to distinguish between good and bad, PVC pipe is even more difficult to distinguish. Obviously the naked eye looks almost the same two pipes, in the quality of a lot of difference, how to identify PVC pipe advantages and disadvantages

 

Pipes are difficult to distinguish between good and bad, PVC pipe is even more difficult to distinguish. Obviously the naked eye looks almost the same two pipes, in the quality of a lot of difference, how to identify PVC pipe advantages and disadvantages, you can from the following aspects:

 

 

First, the length of the pipe and wall thickness

According to national standards, PVC drainage pipe length is generally 4m or 6m, pipe length does not allow negative deviation. However, some manufacturers on the market in order to reduce costs and cut corners, shorten the length of the pipe, resulting in the installation of a variety of problems in the later stages, so you can measure the length of the pipe to determine whether to meet the specified requirements.

 

 

(1) Measure the wall thickness: see whether to achieve the specified wall thickness, here also note that some pipes are cored pipes, the two ends of the wall thickness to meet the requirements, but the middle wall thickness is thin, did not meet the requirements for use, in order to reduce costs.

 

(2) Measure the length: see whether the specified length, some manufacturers rely on shortening the length to reduce prices. According to GB/T 5836.1-2018 building drainage with hard polyvinyl chloride (PVC-U) pipe standards, negative deviation is not allowed.

 

Second, take a look, smooth surface light color

If you look at it, it is mainly from two aspects, one is the glossiness, and the other is the color.

(1) look at the gloss: the surface of a good gloss looks oily and belongs to the top quality products.

 

(2) Look at the color: standard quality PVC-U pipe is milky white, if the pipe is white, that means that the calcium powder to add excess, some manufacturers of miscellaneous materials, recycled materials added too much, made of black, yellow pipe.

 

 

Third, weighing, high weight impurities more

The so-called paw, is to weigh, take the same caliber, wall thickness, length of the two tubes to compare the weight, the weight of the high calcium powder, impurities added too much, the material is not pure, may not meet the requirements.

 

Fourth, drop a fall, fragile high calcium quality sub

Conditions can be used to step on the port of the pipe, or take the PVC pipe to the ground to fall, if it is easy to step on the broken or broken, the pipe is a "high-calcium tablets", that is, in the production of calcium powder added in excess, such a pipe is cheap, but its hardness declined a lot of easy to break, for substandard products.

 

High-quality PVC pipe with a kick or even rolled with a car will only flat will not crack more will not be broken, poor-quality PVC pipe with a foot can be broken.

 

Fifth, a test, test reports to identify good and bad

Usually, through the above five points, basically can be good or bad PVC pipe for a basic identification. If you are still not assured, you can only amplify the trick, come up with an authoritative third-party test report.