Oxide thickness. The national standard rules of architectural aluminum oxide film thickness of not less than 10um (micron). Thick enough, aluminum exterior is easy to rust, corrosion. Sample testing of some proletarian name, address, consumer promise certificate, certificate of aluminum, oxide film thickness of only 2 to 4um supply cut aluminum factory, and some even do not have the oxide film. According to experts, the budget is reduced by 1um oxide film thickness, profiles can reduce the power consumption per ton cost more than 150 yuan. Chemical composition failed. The incorporation of a large number of miscellaneous aluminum, scrap aluminum can greatly reduce costs, but will lead to the chemical composition of aluminum construction failure, seriously endanger peace building projects. Reduce the wall thickness profiles. 90 series of sliding type, according to the national standard which is not less than the minimum wall thickness of aluminum 1.4mm, some products are only 0.6 to 0.7mm. 46 bomb door type, the national standard use of aluminum is not less than the minimum thickness of 1.62mm, sampling some products only from 0.97 to 1.18mm. A significant reduction in low-grade aluminum block time, reducing chemicals loss slitting aluminum manufacturer, the cost down, but the corrosion resistance profiles also greatly reduced. Notes aluminum drilling a borehole, drilled aluminum selecting drilling machines, the most want to choose one of only a pneumatic drill cutting quality aluminum Which is good, the choice to use the collet mounted taps time, with the torque tube to choose the folder protection function, so in a timely manner is in the process of drilling there have been some problems, but also to ensure the situation does not appear to slip Taps cut aluminum, and can guarantee will not appear There rotten teeth broken taps situation. 2, the last when drilling aluminum, to use the most appropriate drilling oil, so as to ensure that drilling will not be blocked when the problem, leading to a standard diameter is too large, to better guarantee the borehole. Ribbon cutting, slitting Which good quality aluminum, aluminum rolls (certified merchants) provided by the Aluminum Co., Ltd. Jinan rolls. Jinan Heshun Aluminum Co. (www.jnhsly.com) in the field of aluminum products devoted boundless enthusiasm and passion, rolls Alcoa has been customer-centric, for customers to create the concept of value, quality and service to win market share sincerely hope to cooperate with the community to create success, create brilliant. Welcome to the relevant business information, Contact: Zhang.