PP-R pipe system is built around hot and cold water piping system is an important one. Once the boom appears to promote domestic PP-R Plastic piping systems, hoses Wuchang car prices, but unfortunately, due to the interference of counterfeit products and substandard products, PP-R pipe market has not been well sustained development, automotive hose prices, on the contrary gave the market left a 'durable plastic pipe is not' bad impression, so many water piping system architects and developers and plastic pipes with party lost confidence. From a technical perspective, the destruction of substandard products happen for many reasons. On the one hand there is no use of qualified raw materials, plastic pipe in the early stages of development, practitioners thorough enough understanding of raw materials for the long-term performance and strength evaluation method for understanding the raw materials also deep enough; the other is connected to the system is a problem because modulus PP-R pipe inside the plastic hose is relatively large, the price of iron to power cars with a hose, so the joints prone to excessive stress, particularly in the steel-plastic transition fittings and hot water for some action After time, the price of Mishan car with a hose, will appear frequently in the case of leakage. Low temperature flexibility tests low rigidity: hose clamp on the hose diameter of the inner diameter of 12 times round the twist, parking for 6 hours at a low temperature in the 12s by 180 ° twisting torque measured temperature measured with standard torque ratio. Cold bending: Hose clamp diameter of the hose inside diameter of 12 times the torsional wheels, parked at a low temperature for 24 hours, in the 10s twisting 180 °, check if the inner and outer rubber brittle and destruction. Measuring hose temperature brittleness easiest test is to sample 90 ° bend at low temperatures, or after a period of freezing compression hose 1/2 to see if embrittlement, free weights and a method of using a certain weight drop, impact test like to see if the sample embrittlement. Tieli car hose price, SOUTH hose (online consultation), the price of the car with a hose is provided by Yichang SOUTH hose tape Limited. Yichang SOUTH hose tape Limited (www.znjgjd.com) (www.1234.com) is Yichang, Hubei Province, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. SOUTH hose in leadership with the staff warmly welcome all inquiries negotiations to create a better future SOUTH hose.