Supply of ppr pipe fittings pert to warm the pipe the Liaocheng Matilda tube industry 

 Supply of ppr pipe fittings pert to warm the pipe the Liaocheng Matilda tube industry 

 Supply of ppr pipe fittings pert to warm the pipe the Liaocheng Matilda tube industry 

 Polypropylene tube divided into homopolymer polypropylene (PP-H), block copolymer polypropylene (PP-B), and atactic polypropylene (PP-R) 3. PP-H, PP-B, PP-R pipe stiffness descending order of impact strength followed. Water supply polypropylene tube is made of extraordinary PP-R. PP-R pipe as a new type of pipe, with the following characteristics: 2.1 Energy Saving PP-R pipe production energy consumption is only 20% of the steel pipe, and its low thermal conductivity of 0.2W / (mK)] steel is only 1/200, applied to the hot water system will greatly reduce heat loss. 2.2 The corrosion-resistant, non-scaling, health, non-toxic use of PP-R pipe can be removed from the use of galvanized steel caused by the inner wall scaling, rust caused by water quality "secondary pollution". PP-R group were simple, the basic components of carbon and hydrogen, in line with food hygiene regulations, non-toxic, more suitable for transportation of drinking water. 2.3 heat, pressure, long service life PP-R pipe, long-term use temperature of 95 ° C, short-term use temperature of up to 120 ° C. Use temperature of 70 ° C, working pressure the 1.2MPa conditions, long-term continuous use, life expectancy up to 50 years. 2.4 lightweight, high strength, small fluid resistance PP-R pipe density of only the metal tube 1/8, and resistance to pressure test strength up to 5MPa, and good toughness, impact resistance. Smooth wall, no rust, no scaling, the fluid resistance is small. PP-R pipe of the main technical indicators are as follows: density of of 0.9g/cm3 elastic modulus (20 ° C) the 800MPa thermal expansion coefficient 1.8 × 10-4 / K, the thermal conductivity of 0.2W / (mK of) longitudinal contraction rate of 2% impact test breakage rate ≤ 10% 1h hydraulic test short-term, ring stress 16MPa no leakage long-term 95 ° C, 1000h, ring stress 3.5MPa seepage table a pipe properties of several materials. 
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