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class="p14-infocontent-1 blk"> <h1 class="p14-infocontent-1-tit">pvc塑料通風管在鋪設后進行防凍辦法</h1> <div class="p14-infocontent-1-sour"> <span> 作者：admin </span> <span> 編輯：admin </span> <span> 來源：未知 </span> <span> 2022-12-08 09:21 </span> </div> <div class="p14-infocontent-1-desc endit-content"><p> <div> pvc塑料通風管在鋪設后進行防凍辦法</div> <div> </div> <div> <a href="http://www.foro-espana.com/"><strong>pvc塑料通風管</strong></a>常用松土防凍法和掩蓋保溫材料方法進行防凍，在開挖溝槽收工前，不管溝槽是否見底均預留一層翻松土壤防凍，在需挖土方或已挖完的土方溝槽上掩蓋草墊、草簾子等保溫材料，以使pvc塑料通風管土基不受凍。pvc塑料通風管可溶于被上色的樹脂中，顏料一般為無機化合物，不溶于被上色介質，其上色性是經過本身的高渙散性顆粒渙散于被染介質，其折射率與基體差別***，吸收一部分光，而又反射另一部分光線。</div> <div> </div> <div> 顏料對塑料具有上色性，一起兼有填料和穩定劑的效果。在搬運pvc塑料通風管時，應當心輕放、防止油污、禁止劇烈撞擊，禁止與尖利物品碰觸和拋、摔、滾、拖。pvc塑料通風管在施工過程中要確保提供的管材契合規劃規則，并附有產品說明書和質量合格證書。在運用前一定要對pvc塑料通風管進行技術鑒定或者復檢，杜***運用質量有異有損壞痕跡的管材。如果產品外觀粗糙、有成型缺陷、色澤不正、有雜質、印刷質量較差就不要選用。</div> <div> </div> <div> <img alt="pvc塑料通風管" src="/uploads/allimg/221208/1-22120P92133529.jpg" style="width: 500px; height: 281px;" /></div> <div> </div> <div> 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