It should be noted that the life of the pseudo-PP-R pipe is only 1--5 years, while the real life of PP-R pipes are more than 50 years. The real PP-R pipe should conform to standard ISO / DIS 15874.2-1999 "Plastics piping systems for hot and cold water --PP second part of the tubing" fittings shall comply with Standard ISO / DIS 15874.2-1999, "Plastics piping systems for hot and cold water --PP third member in charge "; performance pseudo-PP-R pipes and fittings are not pass the above criteria. Production of qualified PP-R pipe must have strict requirements for raw materials and extrusion equipment. PP can produce hot and cold water pipes for raw materials, there are three:
1, adding a certain amount of homopolymer PP toughening additives made by blending granulation, this material commonly known as PP-H.
2, the use of PP and PE block copolymer, this material commonly known as PP-B.
3, the use of advanced technology gas copolymer, PE in the molecular chain of PP random, the polymerization uniformly, this material commonly known as PP-R.
Screw barrel for the production of PP-R plastic pipe extruder to use sophisticated computer models to determine the precise calculation of each segment pressure distribution, melting rate, it has good low-temperature plasticizing capacity. Ordinary single-screw extruder can not be used to produce PP-R pipe.
Currently on the market PP-R pipe 70-80% are not real PP-R pipe. To help users from the appearance and feel of the authenticity of the initial recognition PP-R pipes and pipe fittings.
Refer to the following identification methods:
(1) Product name: PP-R product name should be "hot and cold water polypropylene pipe or" hot and cold water PP-R pipe "where the ultrafine particle dubbed modified polypropylene tube (PP-R) or PP-R cold water pipe, PP-R hot water pipes, PP-E tubes, etc., the informal name of the pseudo PP-R pipe.
(2) Product testing unit is a non-professional units, does not match the contents of the criteria listed in the test project content and PP-R pipe, product recommendation department or product promotion department, for PP-R product standards do not understand or without PP-R standards department the certificates are issued by the pseudo-PP-R.
(3) the density of the pseudo-PP-R slightly larger than the PP-R.
(4) PP-R pipe matte white or other colors of matt, pseudo-PP-R pipe shiny bright or bright color.
(5) PP-R pipe is completely opaque, pseudo-PP-R pipe slightly translucent or semi-translucent.
(6) PP-R pipe soft touch, pseudo-PP-R pipe feel smooth.
(7) PP-R pipe landing sound more boring, pseudo-PP-R pipe landing sound more crisp.
1, adding a certain amount of homopolymer PP toughening additives made by blending granulation, this material commonly known as PP-H.
2, the use of PP and PE block copolymer, this material commonly known as PP-B.
3, the use of advanced technology gas copolymer, PE in the molecular chain of PP random, the polymerization uniformly, this material commonly known as PP-R.
Screw barrel for the production of PP-R plastic pipe extruder to use sophisticated computer models to determine the precise calculation of each segment pressure distribution, melting rate, it has good low-temperature plasticizing capacity. Ordinary single-screw extruder can not be used to produce PP-R pipe.
Currently on the market PP-R pipe 70-80% are not real PP-R pipe. To help users from the appearance and feel of the authenticity of the initial recognition PP-R pipes and pipe fittings.
Refer to the following identification methods:
(1) Product name: PP-R product name should be "hot and cold water polypropylene pipe or" hot and cold water PP-R pipe "where the ultrafine particle dubbed modified polypropylene tube (PP-R) or PP-R cold water pipe, PP-R hot water pipes, PP-E tubes, etc., the informal name of the pseudo PP-R pipe.
(2) Product testing unit is a non-professional units, does not match the contents of the criteria listed in the test project content and PP-R pipe, product recommendation department or product promotion department, for PP-R product standards do not understand or without PP-R standards department the certificates are issued by the pseudo-PP-R.
(3) the density of the pseudo-PP-R slightly larger than the PP-R.
(4) PP-R pipe matte white or other colors of matt, pseudo-PP-R pipe shiny bright or bright color.
(5) PP-R pipe is completely opaque, pseudo-PP-R pipe slightly translucent or semi-translucent.
(6) PP-R pipe soft touch, pseudo-PP-R pipe feel smooth.
(7) PP-R pipe landing sound more boring, pseudo-PP-R pipe landing sound more crisp.