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The advantages of choosing PPR plastic aluminum stable tube compared with ordinary PPR aluminum tube

Date:2017-04-19 15:54:08

PPR steady-state aluminum plastic pipe has mature application experience: Aino PPR pipe industry steady-state aluminum plastic pipe by the German plastics Center (SKZ), German standard gas and Water Association (DVGW) technical manuals (W542-1997, DVGW/MP52) production, nearly ten years of history in the production and application of products in Europe, Europe the nation's leading products in the field of water supply and heating. Ordinary PPR aluminum tube outer wall thickness thickening, the hot melt connection, which belongs to the domestic original, but there is no corresponding international (ISO) or other advanced countries (such as DIN), Chinese (GB) and other relevant standards, not western developed countries use this product basis and corresponding application experience. In foreign countries, water supply, heating pipeline system commonly used in parallel form, ordinary PPR aluminum composite pipe in application, water separator and water appliances (such as water, no radiator) connected with a joint pipe, both ends of the pipeline by pressing type mechanical joint, Guan Daoan of security, the joint can repair, but no hot melt connect the precedent.
福彩3D Ordinary PPR plastic pipe is composed of multilayer material of cross-linked polyethylene and polypropylene material and aluminum three young's modulus difference of material pipe under internal pressure, tube thickness direction stress distribution is not equivalent, and different plastic tube, cannot use the standard size than the SDR value to characterize the capacity of materials load bearing; tube series S pipe material selection cannot be used to determine the wall thickness of the pipe. Ordinary aluminum plastic pipe should be suitable for compression type mechanical connection. If the use of hot melt connection, prone to "stratification" phenomenon, compressive strength, poor stability, foreign developed countries have no precedent. PPR steady-state aluminum plastic pipe has reasonable structure, high stability: analysis from the angle of mechanics for water distribution pipeline radial stress, from the inside out, from large to small, the hoop stress is small, the pipe wall stress is maximum and minimum (zero) tube. PP-R plastic aluminum tube in full compliance with the ISO/DIS15874-1999 tube series S standard size requirements, the main pressure. The aluminum alloy layer is close to the outer wall of the pipe, and the stress is low. It is a functional layer, which can not only reduce the expansion coefficient of the PPR tube, but also improve the creep resistance of the PPR tube.

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