• <u id="3cizz"><rp id="3cizz"><em id="3cizz"></em></rp></u>

    • 后入内射无码人妻一区,啊灬用力灬啊灬啊灬啊灬,日本www网站色情乱码,丰满亚洲大尺度无码无码专线,美丽的熟妇中文字幕,成年女人色毛片,少妇高潮喷水久久久久久久久久,亚洲av日韩av全部精品

      常熟國強和茂管材有限公司

      Sinupower Heat Transfer Tubes Changshu Ltd.
      CN EN

      400-100-7068

      + 微信號:WEIXINHAOMA

      Your location : Home > News > Company Dynamics

      Classification and application scope of precision aluminum tubes

      Source:en      Release date: 2022-05-17
      Information summary:Precision aluminum tube is a kind of high-precision aluminum tube material processed by cold drawing or hot rolling. Knowing the product variety is more conducive to your choice, the variety of aluminum pipes is completely comparable to the diversity of biological species in small areas
      Precision aluminum tube is a kind of high-precision aluminum tube material processed by cold drawing or hot rolling. Knowing the product variety is more conducive to your choice, the variety of aluminum pipes is completely comparable to the diversity of biological species in small areas. Now let me introduce to you.
        First, the classification of precision aluminum tubes: precision aluminum tubes are divided into two categories: precision aluminum tubes and welded precision aluminum tubes (seamed tubes). According to the cross-sectional shape, it can be divided into round tube and special-shaped tube. The widely used is the round precision aluminum tube, but there are also some square, rectangular, semicircular, hexagonal, equilateral triangle, octagonal and other special-shaped precision aluminum tubes. For precision aluminum tubes that are under fluid pressure, hydraulic tests must be carried out to check their pressure resistance and quality. It is qualified if no leakage, wetting or expansion occurs under the specified pressure. Carry out curling test, flaring test, flattening test, etc.
        Second, precision aluminum tubes: precision aluminum tubes are made of aluminum ingots or solid tube blanks through perforation to make capillaries, and then hot-rolled, cold-rolled or cold-drawn. The specification of precision aluminum tube is expressed by outer diameter * wall thickness mm. Precision tubes are divided into two categories: hot-rolled and cold-rolled (dial) precision tubes. Hot-rolled precision tubes are divided into general precision tubes, low and medium pressure boiler precision tubes, high pressure boiler precision tubes, alloy precision tubes, stainless precision tubes, petroleum cracking tubes, geological precision tubes and other precision tubes. In addition to general precision tubes, low and medium pressure boiler precision tubes, high pressure boiler precision tubes, alloy precision tubes, stainless precision tubes, petroleum cracking tubes, and other precision tubes, cold-rolled (dial) precision tubes also include carbon thin-walled precision tubes. Tube, alloy thin-walled precision tube, stainless thin-walled precision tube, special-shaped precision tube. The outer diameter of hot-rolled seamless tubes is generally greater than 32mm, and the wall thickness is 2.5-75mm. The diameter of cold-rolled precision tubes can reach 6mm and the wall thickness can reach 0.25mm. Higher dimensional accuracy than hot rolling.
        Third, the general use of precision tubes to ensure the strength and flattening test. Hot-rolled precision tubes are delivered in a hot-rolled state or heat-treated state; cold-rolled precision tubes are delivered in a heat-treated state.
        Due to the advantages of no oxide layer on the inner and outer walls of the precision seamless aluminum tube, no leakage under high pressure, high precision, high finish, no deformation in cold bending, no flaring, no cracks in flattening, etc., it is mainly used to produce products for pneumatic or hydraulic components, such as Cylinders or cylinders can be seamless pipes or welded pipes. Precision tubes are widely used in automobiles, motorcycles, electric vehicles, petrochemicals, electric power, ships, aerospace, bearings, pneumatic components, seamless aluminum tubes for medium and low pressure boilers, etc., and can also be used in bearings, hydraulics, machining and other fields!
      主站蜘蛛池模板: 久久婷婷五月综合97色一本一本 | 毛片无码免费无码播放| 自拍偷自拍亚洲精品第1页| 特黄做受又硬又粗又大视频小说| 好男人的社区在线| 日韩成人大屁股内射喷水 | 青丝影院电视剧播放| 野花韩国高清视频| 武邑县| 嫩江县| 国产粗话肉麻对白在线播放| 网曝吃瓜黑料一区| 久久精品无码鲁网中文电影| 专干老肥熟女视频| 新晃| 亚洲制服丝袜无码av在线| 麻豆成人久久精品二区三区免费| 啦啦啦视频免费播放完整版| 三年片大全| 日韩人妻无码一区二区三区综合| 国模吧+一区二区| 一边做一边说国语对白| 男人激烈吮乳吃奶视频免费| 忘记穿内裤被同桌摸到高潮app| 一本色综合网久久| 法库县| 少女视频在线观看完整版中文| 麦盖提县| jlzz大全高潮多水老师| 清远市| 国产亚洲欧美精品永久| 综合一区无套内射中文字幕| 欧美videosfree性派对| 香蕉伊蕉伊中文视频在线| 日本亚洲国产一区二区三区| 我的乳在厨房被揉搓| 亚洲线精品一区二区三区影音先锋| 丰满少妇高潮惨叫正在播放 | 在线观看免费观看在线| 伊川县| 国语对白做受xxxxx在线|