Chemical construction material will be faced a enormous market,Uigorously developing and popularizing it will bring about outstanding economic and social benefit.The government will further strengthen to support and develop chemical construction material,emphasize to apply plastic pipe,plastic door and window,new waterproof material and construction paint and spur on developing other chemical constrution material at the same time.
There are about 2000 production lines for plastic pipe and 2100 production lines for plastic door and window in China presently.The total output was 450000 Tows for plastic pipe and fittings and 200000 Tows for plastic door and window in 1998.
    Up to 2005,the plastic pipe will cover 50% market of all sorts of pipe and the plastic door and window will cover more than 20% markert of all sorts of construction door and window in the whole country.The plastic pipe made in pvc-U and PE will be applied,and other new plastic pipe will be developed . In the whole country ,70% construction drainage,60% drinking water pipe and hot water pipe ,50% construction rain pipe and 80% wire preservation pipe will be plastic in all builing projects.The pastic pipe will be used for public water main (under DN 400mm)to 50% in city and 70% in countryside,The plastic pipe also will be used for 30% of urbar drainage and 20% of urbar gas main (middle and low pressure).
    Plastic door and window made in uprc has been popularized mainly.Its market rate will reach 20% in all construction door and window,the rate of use plastic door and window will be more than 50% in heating district and not lower than 35% in other district needed saving energy in construction.Therefor,about 40000000 square metres plastic door and window will be needed by 2005.
    The development to 2015;80% construction drainage will be plastic pipe and the cast iron pipe will be obsolete mostly;90% wire preservation pipe will be plastic pipe;80% construction rain pipe will be plastic pipe;85% consstruction drinking pipe,hot water pipe and heating pipe will be plastic pipe and the zinc coating pipe will be obsolete mostly; The public water main(under DN 400mm)which is in 80% in city and 90% in countryside will be plastic pipe;More than 40% of urbar gas main and 50% urbar drainage will be plastic pipe.The rate of using plastic door and window will reach 60% in the district needed saving energy,the rate of market will reach 40%.md 80000000 square metres plastic door and window will be needed in the whole country.