Copper copper wholesale _ _ ChaoXiang metallwarenfabrik

The third is the outer peripheral surface of the nut to the inner peripheral surface of the threaded screw holes are drilled through the (usually 2, leaving it in the outer profile 90) for screwing a small-diameter countersunk head screw, the purpose is to give the thread applying a radial direction of the force to prevent the lock nut is released. 1. insulation requirements. Good insulation properties. Thermal conductivity is the most important properties of the insulation material copper factory sales, as the requirements of the thermal conductivity of insulation materials as possible. Thermal conductivity of insulation materials depends mainly on its inner layer contains air bubbles or air the size and distribution of the smaller properties constitute a solid relationship with the insulation material. 2. The requirements of the protective layer, in order to use long-term reliable outside insulation usually also add a layer of protective layer of copper fittings, protective layer of requirements are as follows: 1) waterproof performance. 2) compressive strength is good, generally not less than 80MPa copper prices, not combustion. 3) thermal conductivity at 50 ℃ does not exceed 0.33W / (m? K). 4) In the case of a temperature change or vibration, resistance to cracking or peeling. 5) containing flammable material or organic rare, generally should not exceed 10%. Copper copper wholesale _ _ ChaoXiang metallwarenfabrik provided by Linyi City Super Cheung Metal Products. Linyi City Super Cheung Metal Products (www.tongqianjian.com) strong, credible, non-ferrous alloys in Linyi products industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead ChaoXiang metallwarenfabrik and you hand into the brilliant, for a better future!