At present, there will be such a statement in the market. Some people say that the white tube is non-toxic and the gray tube is toxic. Some people think that the gray tube is a recycled tube and is unwilling to use it. , but depends on its intrinsic quality.
The so-called white color, green color or gray color is that the company adds white, green or gray color masterbatch to the raw materials according to the relevant regulations and the special needs of users to produce white, green and gray pipes. Whether it is non-toxic or not depends on whether the content of lead, cadmium, tin, mercury and vinyl chloride monomers in the pipe meets the national standards. As for the gray ppr pipe in general, it is unscientific!
The sources of recycled pipe materials are different and the colors are mixed. The manufacturer must add a certain amount of colorants for the appearance, deepen the color, dress up the appearance, or gray or black, but it cannot be concluded that all gray and black plastic pipes are recycled pipes. Strictly speaking, the use of color does not have any effect on the PPR pipe material. Therefore, the color of the pipe does not directly reflect the quality of the pipe, and the color difference is only the color masterbatch added.