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With the wide application of PPR pipes and fittings in the home decoration industry, correctly distinguishing the advantages and disadvantages of PPR pipes has always been the concern of consumers and users. In order to ensure the rights and interests of consumers and help consumers preliminarily identify the true and false PPR pipes from the appearance and feel. Next, PPR pipe manufacturers will introduce the advantages of PPR pipes and fittings and how to distinguish the advantages and disadvantages.
What are the advantages of PPR pipe fittings
Good hygienic performance.
It is composed of alkene and auxiliary material in water, and its corrosion resistance is not good. It is only composed of alkene and auxiliary material in water, which can not meet the corrosion standard of all raw materials.
Small pipeline resistance.
The inner wall of the straight pipe is smooth and will not scale. The friction resistance of the lead path is smaller than that of the box pipe, the cross-sectional area remains small when the pipe fittings are connected, and the local resistance coefficient is smaller than that of the metal pipe.
The waste of pipes and pipe fittings can be recycled.
After cleaning and crushing, the waste can be directly used to produce pipes and pipe fittings; No pollution to the environment during production and construction It belongs to edge color building materials.
Heat preservation and energy saving.
The thermal conductivity of PPR pipe material is 0.21 w / (m.k), which is only 1 / 200 of that of steel pipe. Generally, when thermal insulation is required for hot water pipeline, the effect of overflow protection and energy saving is obvious; The expansion force generated when the Ju degree changes is also small, which is suitable for direct burial and concealed laying in the wall and floor surface layer.
Good heat resistance and long service life.
PPR pipe is of high grade, and the working temperature can reach 95 ℃. Under the pressure of 1.0MPa, the long-term service temperature is 70 ℃ Meet the upper limit temperature of hot water supply. Working pressure PN1 Under the condition of 0mpa, the service life can reach more than long-term durability according to standards; under normal temperature, the service life can reach more than 100 years.
Convenient installation and reliable connection.
The production process is simple, the equipment investment is small, and the quality is light. The weight is only 1 / 9 of that of steel pipe and 1 / 10 of that of purple steel pipe, which reduces the construction intensity of workers; As the pipe material is processed and manufactured with three kinds of raw materials. It has good hot-melt function, convenient and reliable installation, and the strength of the connecting part is greater than that of the pipe wood body.
Correctly distinguish the advantages and disadvantages of PPR pipes and fittings
Marking: check the marking contents of pipes, generally including PPR pipe manufacturer's name (trademark), product name, type, specification and size, production date, batch number, quality certification, etc;
Wall thickness: see whether it is in strict accordance with the standard GB / T18742 2-2002, measure the standard with caliper;
Color: good PPR tube village looks milky white (not all white), the surface is smooth (not smooth), the feel is soft, and there are no impurities;
Light transmittance: good PPR pipes are completely opaque, while pseudo PPR pipes are slightly or semi transparent;
Sound: the landing sound of high-quality pipes is dull, and the landing sound of low-quality pipes is crisp.
The real PPR pipe shall comply with the standard ISO / DIS 15874.2-1999 plastic pipe system for cold and hot water - PP Part II pipe. The performance of fake and inferior PPR pipes can not pass the above standards. It is worth noting that the service life of inferior pipes is only 1-5 years, while the service life of high-quality PPR pipes and fittings is more than long-term durability according to standards.
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