涩老板在线免费视频_午夜成人精品_神马理论午夜,,_亚洲有薄码区久久欧美精品一区_97人人色_神马在线精品_成人熟女一区二区_亚洲二区三区四区_人妻午夜免费_大鸡巴猛男爆操骚逼国产一区二区_丁香婷婷久久一区二区三区_岛国内射美女_亚洲一级电影,亚洲欧美日韩国产最新版,亚洲五月综合缴情综合久久本,少妇色情喷水又紧又爽小说,巜上司的少妇的滋味,国产精品三级女人国产香蕉,亚洲最好的免费电影,欧美亚洲国产成人精品,国产永久一区二区三区,亚洲综合一区无码精品,歳の熟女セックス,内射带小孩熟妇,果冻传媒在线看免费视频观看,成人欧美一区二区三区片,亚洲 片内射欧美美妇,一本无码人妻在中文字幕免费,亚洲无毛视频,中文字幕丰满孑伦无码专区,亚洲爆乳无码专区色戒纶理,肉乳床欢无码片动漫软件,欧美日韩一区二区另类,久热只有精品在线直播,精品亚洲一区二区在线播放,精品国产乱码久久久久久影片,国产一级高清在线观看,国产精品福利在线一区,成人动漫下载,乱伦性爱视频,xo无码AV毛,国产黄A片免费网站免费,日韩欧美一级特黄特色大片

通風管道作業條件：一般送風機系統和空調系統的安裝，要在建筑物圍護結構施工完，障礙物已清理，地面無雜物的條件下進行。上海風管加工對空氣潔凈系統的安裝，應在建筑物內部安裝部件的地面已做好，墻面已抹灰完畢，室內無灰塵飛揚或有防塵措施的條件下進行。一般除塵系統風管安裝宜在廠房的工藝設備安裝完或設備基礎已確定，設備連接器、罩體方位已知的情況下進行。檢查現場預留孔洞位置、尺寸應符合圖紙要求，每邊比實際截面大100mm。上海風管加工廠作業地點要有相應的輔助設施，如梯子、架子、安全防護、消防器材，并有施工員的技術、質量、安全交底。

Ventilation duct operation conditions: Generally, the installation of the supply fan system and air conditioning system should be carried out after the construction of the building enclosure structure is completed, obstacles have been cleared, and the ground is free of debris. The installation of air purification systems for Shanghai air duct processing should be carried out on the ground where the components are installed inside the building, with the walls plastered and no dust flying or with dust prevention measures in place. The installation of air ducts for general dust removal systems should be carried out after the installation of process equipment in the factory or when the equipment foundation has been determined, and the orientation of equipment connectors and covers is known. The position and size of the reserved holes on site should meet the requirements of the drawings, and each side should be 100mm larger than the actual cross-section. The operation site of the Shanghai air duct processing plant should have corresponding auxiliary facilities, such as ladders, shelves, safety protection, fire equipment, and have technical, quality, and safety instructions from construction workers.

通風管道材質要求：各種安裝材料應具有出廠合格證明書或質量鑒定文件及產品清單。風管成品不允許有變形、扭曲、開裂、孔洞、法蘭脫落、開焊、漏鉚、漏打螺栓孔等缺陷;安裝的閥體、風口等部件應檢查調節裝置是否靈活，消聲片、油漆層有無損傷。安裝使用的材料：螺栓、螺母、墊圈、墊料、密封條、自攻螺釘，拉鉚釘，焊條、各種帆布、無紡布、射釘、膨脹螺栓應符合產品質量要求。鐵皮管道廠家在制作時,其所用板材、螺旋風管廠家型材以及其他主要成品材料制作要求十分嚴格。焊縫應作外觀檢查,不應有氣孔、砂眼、夾渣、裂紋等缺陷,焊接后鋼板的變形應矯正。

Ventilation duct material requirements: All installation materials should have factory certificates of conformity or quality appraisal documents and product lists. The finished air duct shall not have defects such as deformation, distortion, cracking, holes, flange detachment, welding, missing riveting, or missing bolt holes; The installed valve body, air outlet and other components should be checked for flexibility in the adjustment device, and for damage to the sound-absorbing plate and paint layer. The materials used for installation: bolts, nuts, washers, gaskets, sealing strips, self tapping screws, rivets, welding rods, various canvas, non-woven fabrics, injection nails, and expansion bolts should meet the product quality requirements. Iron sheet pipe manufacturers have very strict requirements for the production of plates, spiral duct manufacturer profiles, and other main finished materials used in their production. The weld seam should undergo visual inspection, and there should be no defects such as pores, sand holes, slag inclusions, cracks, etc. The deformation of the steel plate after welding should be corrected.

鐵皮風管的風道與風口接合用帶保溫層的軟管連接。鐵皮風管的風道安裝應平、直, 共板風管主風道安裝不直度≤1.5㎜/m,不平度≤1㎜/m。鐵皮風管和配件表面平整、圓弧均勻、縱向接縫應錯開,咬口縫應緊密,寬度均勻。鐵皮管道廠家介紹鐵皮風管除具有剛度好、強度大的優點外，上海通風管道又具有吸音降噪、保溫隔熱不需要二次保溫的性能，克服了以前復合風管強度弱，外壁易破損的弱點，發揚了鍍鋅鐵皮的優勢，風管廠家使用壽命更長，且美觀大方，更顯尊貴本色。內層保溫材料為有機材料中不燃性能＊好的酚醛泡沫，管道在成型后不需要二次保溫，并且具有抑菌和消聲功能。

The air duct of the iron sheet air duct is connected to the air outlet using a flexible hose with an insulation layer. The installation of the iron sheet air duct should be flat and straight, and the installation of the main air duct of the common plate air duct should have an unevenness of ≤ 1.5mm/m and an unevenness of ≤ 1mm/m. The surface of the iron sheet air duct and accessories should be flat, with even arcs, and the longitudinal joints should be staggered. The bite seams should be tight and the width should be even. Iron sheet pipe manufacturers introduce that in addition to the advantages of good stiffness and strength, iron sheet air ducts in Shanghai also have the properties of sound absorption, noise reduction, insulation, and no need for secondary insulation. This overcomes the weakness of weak composite air ducts and easy damage to the outer wall in the past, and promotes the advantages of galvanized iron sheets. Air duct manufacturers have a longer service life, are beautiful and generous, and show more noble colors. The inner thermal insulation material is phenolic foam with good incombustibility in organic materials. The pipe does not need secondary thermal insulation after molding, and has antibacterial and noise elimination functions.