The previous period
First, what is the PP-R Pipe Fittings ?
PP-R called the three types of polypropylene, used by the PP-R out of a pipe, injection into the tube. Europe is the early 1990s, the development and application of new plastic pipe products. PP-R is the end of the 1980s, the gas used COPOLYMERIZATION 5% of the PP in PE about the molecular chain of random uniform polymerization (-R) and a new generation of pipeline material. It has good resistance to impact and long-term creep properties.
Second, PP-R and PP-C What is the relationship between ?
Go to have Lunch!
The previous period, the domestic market on a PP-C pipe, tube, the installation method consistent with the PP-R. Many people in the dark on PP-R and PP-C What is the difference, resulting in a lot of misunderstanding and confusion. International standards, polypropylene hot and cold water pipes at PP-H, PP-B, PP-R are not PP-C. On the market PP-C is actually the PP-B of its raw materials is a block of special PP-type pipe. PP-B is of a hot and cold water pipes, the price is cheaper, its heat and pressure performance and the gap between the PP-R great. For example: the use of conditions grade 2, 0.6 MPadn25mm design pressure pipe, PP-R wall thickness of 3.5 mm, PP-B (PP-C) pipe wall thickness to 5.1 mm; design pressure of 0.8 MPadn25mm, PP-R pipe wall thickness 4.2 mm, and PP-B (PP-C) can not be used. Because the requirements of a thick wall thickness. Market size and structure of PP-R line of the PP-C, lower than its terms can not be confused with the use of PP-R, not in determining conditions of use, to replace PP-C of the PP-R. Terms of Use 2 that the design temperature 70 ℃, heating water.
Go to have Lunch!
3, PP-R What are the characteristics of the ?
PP-R pipe in addition to general plastic pipe light weight, corrosion-resistant, non-scaling, and other characteristics of long life
Now we go on.
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