Discussion: The new pipes are widely used in building water supply and drainage - drainage - water industries

Discussion: The new pipes are widely used in building water supply and drainage - drainage - water industries

Traditional galvanized steel and general drainage Cast iron pipe As easy to corrosion, since the major causes of transportation construction inconvenience to be replaced. Water supply and drainage pipes are mainly used plastic pipe, metal pipe and Composite Pipe Of three.

1 plastic tube Plastic pipe resin additive is formed by the melting of the products processed. Additives are plasticizers, stabilizers, fillers, lubricants, colorants, UV absorbers, modifier.

Common plastic pipe are: hard PVC pipe (PVC-U), high density polyethylene pipe (PE-HD), cross-linked polyethylene pipe (PE-X), random copolymer polypropylene tube (PP- R), polybutylene pipe (PB), engineering plastics acrylonitrile - butadiene - styrene copolymer (ABS) and so on.

1.1 Plastic Pipe material composition determine the characteristics of plastic pipe. The main advantages of plastic pipe:

(1) chemical stability, not Environment Factors and the impact of pipeline components within the media, good corrosion resistance.

(2) small thermal conductivity, low thermal conductivity, thermal insulation, energy-saving effect is good.

(3) hydraulic performance, pipe, smooth wall, the resistance coefficient is small and difficult to fouling, tube flow area does not change with time, channel blocking probability small.

(4) relative to the metal pipe, density, light materials, transport, easy to install, flexible, simple and easy maintenance.

(5) can be bent or have a cold the natural properties of the coil supply means can be used to reduce the tube Connector Number.

1.2 The main disadvantage of plastic pipe:

(1) poor mechanical properties, impact resistance, poor, poor rigidity, straight sex was bad, and thus control the density of high cards and hanger.

(2) Flame Retardant Poor, most of the combustible plastics, pyrolysis and combustion, it releases toxic gases and smoke.

(3) coefficient of thermal expansion, flexible compensation must be very stressed.

2 plastic pipe performance 2.1 Physical properties Physical properties of plastic pipe. And aluminum-plastic composite pipe, steel pipe, Brass , The physical properties of plastic pipe pipeline mode, use of compensation measures and pipe insulation and so on. Such as:

(1) PVC-U, PP, ABS relatively high mechanical properties, be regarded as "rigid control", install better tomorrow. On the contrary, PE, PE-X, PB as a "flexible tube" for Concealed.

(2) the use of plastic pipes and heat resistance temperature determines the PVC-U, PE, ABS can only be used for cold water pipes, and PE-X, PP, PB may act as a hot water pipe. When building a water supply system and hot and cold water pipes when the heat resistance of a uniform as a major target.

(3) plastic pipe for the high coefficient of thermal expansion, especially in the plastic pipe as a water pipe, with flexible interface Expansion Joint Or a variety of thermal compensation measures such as a bend more. Among them, PE, PP and other polyolefins most. If this is not the time construction and installation of adequate attention, and to take appropriate technical measures, is extremely vulnerable due to the interface of expansion joints and pull off the problem.

(4) because of low thermal conductivity, thermal insulation performance of plastic pipes superior in turn can reduce the thickness of insulation or no insulation. When different between the plastic pipe insulation thermal conductivity of more than, but also with their respective wall thickness.

POST COMMENT

The #1 Energy Efficiency Tip You Should Consider Before Replacing or Restoring Your Roof Conversion To "masters" Of Cold Air On Busy Start To The New 2010 - Inverter Air Carbon Into The Best Prospects For Development Of New Energy Industry - Low-carbon Energy - The A new way of thinking about weight loss Pal Group Has Launched A New Residential Project In Gurgaon neillia Floors Ii Pioneer Urban Land Group Has Launched A New Residential Project In Gurgaon pioneer Presidia Baby Pushchairs And Strollers-getting Ready For Your New Arrival Ren Yuan Will: Led Lighting That Can Boast Of Saving 80% - Pneumatic Butterfly Valve Watch Los Angeles Lakers Vs New Orleans Hornets Live Streaming Online Nba Basketball 2010 Celebrate New Year's Eve By Shopping Diamond Jewelry At Royaldesignonline.com LASIK plus - give people a new vision Watch New Orleans Hornets Vs Los Angeles Lakers Live Streaming Online Basketball 2010 Opulence At The Beginning Of A New Decade