Window of door of glass of Tianjin house building is energy-saving have new rule

Tianjin city built vitreous door window to the residence a few days ago about the branch energy-saving make a provision: The residence builds door window under three-layer coefficient of thermal conductivity should achieve 2.5W/M2·K, coefficient of thermal conductivity should achieve window of door of building of three-layer above house 2.7W/M2·K, coefficient of thermal conductivity should achieve window of door of glass of balcony be born 2.5W/M2·K.

Choose ability of what building materials to reach energy-saving level, it is a problem that is cared generally. For this, window of door of structure of association of trade of this city building materials only appoint can build door window at was being held a few days ago forum of energy-saving application technology, the problem such as energy-saving standard and service life spread out product of window of lever gear door to discuss with respect to how.