Gorgeous windows and doors, steel doors and reasonable price of Shijiazhuang, Shijiazhuang provided by the gorgeous doors and steel doors. We are Shijiazhuang Sino-American Door (www.sjzygf.com) located at: Shijiazhuang specializes in: Shijiazhuang sun room, bridge aluminum doors and windows, shower room, steel doors and glass partitions for multi-cavity structure Shijiazhuang steel doors and windows prices, with good insulation performance, the heat transfer performance is very small, only 1/357 steel, aluminum 1/250 Shijiazhuang steel doors, plastic doors and windows visible insulation, thermal insulation effect is remarkable, especially for modern buildings have heating and air conditioning equipment more apply. Compare investigation, namely: the use of steel doors and wooden doors and windows of the room than the indoor temperature in winter can be as high 4-5 degrees; northern region better use of double glazing. According to the Construction Research Institute of Physics, testing, single glass steel, aluminum window heat transfer coefficient of 64W / M2K; single glass steel window heat transfer coefficient is about 47W / M2K; ordinary double glazing heat transfer coefficient of steel, aluminum windows is about 3.7W / M2K; Shuangbo plastic steel windows and heat transfer coefficient of about 2.5W / M2K. Windows and doors accounted for 30% of the building envelope construction area of ??Shijiazhuang steel doors at reasonable prices, accounted for 49 percent of its heat, therefore, the plastic-steel windows have good energy efficiency. Shijiazhuang gorgeous doors steel doors and steel doors and acceptance of welding depends Whether its welding flush, cracks, corners and outside seam cleanup too is clean and beautiful, with a box-foot diagonal measure of the size of Shijiazhuang steel doors steel doors installed hotline, its diagonal size difference should not be greater than 3mm, right The smaller the difference between diagonal display technology more sophisticated, but also conducive to the installation. Hardware Hardware The quality of steel doors and windows Shijiazhuang gorgeous acceptance of plastic doors and windows on the doors of life have a certain impact, hardware used should look seemed thick and better surface gloss, protective layer of dense, did not touch zoned injury phenomenon, the most important thing is to be open and flexible.