交换娇妻高潮呻吟不断,人妻在卧室被老板疯狂进入,俱乐部换娇妻大杂交

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      Beryllium bronze joint (protection cylinder)
      圖片名稱:鈹青銅保護筒<br>添加時間:2017-06-09 9:56:23<br>瀏覽次數:0
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      1. Product Description: beryllium bronze is a copper alloy with beryllium as the main alloy element. It is in the best performance of the copper alloy high elastic material has high strength, elasticity, hardness, fatigue strength, elastic lag, corrosion resistance and wear resistance, cold resistance, high conductivity, non magnetic, shock does not produce sparks and a series of excellent physical, chemical and mechanical properties.

      2. product classification: Processing beryllium bronze and casting beryllium bronze. The processing of beryllium bronze beryllium content below 2% commonly used, adding 0.3% domestic beryllium copper nickel or cobalt, plus 0.3%. The commonly used processing of beryllium bronze are: Cu-2Be-0.3Ni, Cu-1.9Be-0.3Ni-0.2Ti and so on.

      3. product specifications: diameter of the outer diameter of 20- diameter 200mm wall thickness 4-30mm length: 300mm-4m (can be customized according to customer drawings)

      4. material: Processing beryllium bronze bar of beryllium bronze

      5., the product features: high strength, elasticity, hardness, fatigue strength, small elastic lag, corrosion resistance, wear resistance, cold resistance, high conductivity, no magnetism, no spark produced by impact and so on, and a series of excellent physical, chemical and mechanical properties.

      6. usage: high performance beryllium copper with high conductivity (heat), high strength, wear resistance, high temperature resistance, high toughness, resistance to molten metal erosion characteristics such as high performance beryllium copper hardness HRC43, density 8.3g/cm3, beryllium containing 1.9%-2.15%, which is widely used in petroleum instrument shell joint protection tube etc.




      交换娇妻高潮呻吟不断,人妻在卧室被老板疯狂进入,俱乐部换娇妻大杂交