The biggest difference between 1.4 and 1.2 is the difference in thickness. Thickness refers to the wall thickness of the profile. The thicker the material, the higher the stability. 1.4 is 0.2mm thicker than 1.2 in theory. 1.2 and 1.4 thickness have clear difference, insulation Strip width, profile frame width. The shape of the buckle (the entrance of the garden), the angle setting process (the 8-knife one is good), and the angle code material (the pure aluminum alloy one is good). Now the state stipulates that the wall thickness of aluminium windows must reach 1.4 and that of aluminium alloy door must reach 2.0. Those below this level are all unqualified products. The place of use is also very particular. If the windows of the lower floor and balcony window are 1.2 enough, if the high floor is required, it should be 1.4 or more, and the national standard is 1.4 or more, 1.2 is definitely lower in terms of cost.
Now the difference between 1.2 and 1.4 thickness is that the thickness is different, 1.2 thickness is not up to standard, the national standard profile thickness is 1.4mm, if the supplier chooses materials with 1.2mm or 1.0mm wall thickness or even thinner, they are all substandard products. Please pay attention when purchasing.
