Current, plastic profile of the Pvc on international and plastic door window have two cardinal principle to fasten, basically have the North America system of the European system that is a delegate with Germany and United States, Canada, think technology of German door window is most mature generally among them, and fit Chinese national condition, accordingly, basically introduce as relative as Germany difference.
1. There is difference in basic research and administrative field
Plastic door window of Europe is produced only then at 20 centuries 50 time end, the history is longer, standard system is more perfect, standard requirement is strict, GB standard also apt is a foundation with European standard. There is function of door window physics to detect mostly in German enterprise equipment, oneself begin research, also gathered mass data. When the standard weaves, the analysis after passing a large number of tests must come out crucial data. According to France building technology research center introduces, this center sets an organization to be in charge of the attestation of pair of plastic door windows technically, the attestation of the license that window of the attestation that content includes to mix raw material, attestation of profile, door designs and door window business and its product.
Watch our country corresponding standard to although also be to come from,make much data instead at European standard, but often do not know data origin however. In addition, standard system is not whole, for example indoors outside below the case with big difference in temperature, the standard of the physical function index after the window outside detecting is out of shape and outside standard of window guard against theft. Profile and door window level part to be made by former light the Ministry of Works in feudal China and construction ministry organization again, do not coordinate between the standard, also supervise to quality cause certain difficulty. Be in our country, most PVC plastic profile and door window business do not have function of door window physics to detect equipment, the research that begin is not quite thorough, lack door window of service data accumulate.
2. Designing force, product level field differs bigger