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材料選擇與準備：通風管道一般使用鍍鋅板、不銹鋼或者鋁板等材料，選擇合適的材料根據具體使用環境和要求。材料要具備良好的強度和耐腐蝕性能。在加工之前，需要對材料進行打磨和除銹處理，確保表面平整且無毛刺。</span><br /> <span style="font-size:14px;"> 測量與設計：在進行通風管道加工之前，需要進行準確的測量和設計工作。測量要準確地確定管道的長度、直徑和彎角等尺寸，設計要合理地安排管道的連接方式和布局。通過測量和設計，可以減少加工中的浪費和誤差，提高加工效率和質量。</span><br /> <span style="font-size:14px;"> 切割與加工：根據測量和設計的結果，需要進行切割和加工管道的工作。切割通風管道時，應使用適合的切割工具，如剪刀、機械式切割機或激光切割機等，確保切割邊緣平整和尺寸準確。在加工過程中，應注意保持管道的外形和尺寸不變，并做好防護措施，防止因加工而損壞管道。</span><br /> <span style="font-size:14px;"> 彎曲與連接：通風管道通常需要進行彎曲和連接的工作。彎曲管道時，應根據需要選擇合適的彎曲工藝，如冷彎、熱彎或機械彎曲等，確保管道的彎曲半徑和角度符合設計要求。</span><br /></div> </td> </tr> </table> </p> </div> </div>  <div class="bto"></div> </div> </div> </div> </div> ?<div data-sgpg="sgpg" class="foot_w"> <div class="colsg_inner"> <div class="droppable clearfix"></div> </div> </div> <div data-sgpg="sgpg" class="foot_a"> <div class="colsg_inner"> <div style="width: 575px;" class="droppable sgcol_3 fl"> <div class="model custom_html_model" data-global="0" id="htmlwidget1foot_a"> <div 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