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style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">風管翻邊時，翻邊應有不小于6mm的余量，翻邊不得蓋住螺栓孔。底切應用剪刀倒角或斜切而不開裂，形成弧形翻邊。如果翻邊的四個角有裂紋，應該用錫焊或密封膠填充。當風管板的厚度小于1.2毫米時，可采用接頭角或咬口；厚度大于1.2mm時，可采用焊接。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">成型后，風管與法蘭鉚接連接。鉚釘與風管壁的距離不應大于50mm，鉚釘之間的距離不應大于150 mm當圓形風管(不包括<a href='http://www.142779.com/news/504.html' target='_blank' class='key_tag'><font><strong>螺旋風管</strong></font></a>)直徑800mm，且其截面長度大于1250mm或總表面積大于4時，得要采取加固措施。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">管道生產的材料要求</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">(1)、板材的表面應光滑，厚度應均勻，無明顯碰傷現象，不得有裂紋、砂眼、傷痕、毛刺和銹蝕等情況。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">所選材料的厚度應符合規范要求：(mm)</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">(3)、鋼筋應注意形狀、均勻，不應有裂紋、氣泡、氣孔等影響質量的缺陷，特別注意已有的角鋼有不等邊。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">風管加工材料要求：</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">1、各種板材、管道等。應有質量證明文件(包括出廠合格證、質量證明書和檢測報告等)。)和產品列表。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">2.成品風管不允許有變形、扭曲、開裂、孔洞、法蘭脫落、焊接、漏鉚釘、漏螺栓孔等缺陷。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">3.安裝好的閥門消聲器、風帽、風口等部件應檢查調節裝置是否靈活，消聲器和油漆層有無損壞。</span></p><p style="text-indent: 2em;"><span style="font-family: 微軟雅黑, "Microsoft YaHei"; font-size: 14px;">4.安裝用材料：螺栓、螺母、墊圈、襯墊、密封條、自攻螺釘、鉚釘、電焊條、各種帆布、無紡布、L型釘、膨脹螺栓等。應滿足產品質量要求。</span></p><p style="text-align: center; text-indent: 2em;"><img src="/data/upload/201910/20191021142300_374.jpg" alt="重慶風管加工制作.jpg" width="500" height="169" border="0" 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