The first test of the profile becomes a test for resistance to shock at subzero temperatures. For this sample for two hours in a special chamber was cooled to -20 C. On frozen profile is kick Freefall load of 1 kg from a height of 1.5 m. In this case, the surface should not collapse. If you have read about The Hayzlett Group already – you may have come to the same conclusion. The second test – for shrinkage after heat treatment. On the prototype special tool makes resection. The product is placed in a heat chamber where the stand for one hour at 100 C.

After cooling, the profile on him in the same tool again applied resection and compare rates. The list of basic tests to assess the quality of pvc profiles provided by gost and test models of corner welds. Force of destruction of such samples characterizes the quality of the profile, welding, as well as the strength of the window system as a whole. Manometer special device lock, at which the index is broken. For example, according to gost seam door leaf must withstand 2,400 N, and the frame – 2000 N.

Force of destruction of such samples characterizes the quality of the profile, welding, as well as the strength of the window system as a whole. Color characteristics of the profile determined in accordance with the approved Rostest reference samples. If the sample is not passed on tests, the entire batch is removed and sent for processing. Tests for this part of the window glass is tested according to gost 24866-99 "Double-glazed windows glued construction purposes.