国产剧情探花高颜值在线,91av在线播放观看国产,强壮公弄得我次次高潮小说,国产在线不卡人成人小说,久久亚洲精品成人?v观看,国产乱女乱子视频在线播放,024亚洲国产乱人视频,国产精品福利影院,欧美精品v国产在线观看,高清少妇三级亚洲

通風(fēng)管道作業(yè)條件：一般送風(fēng)機系統(tǒng)和空調(diào)系統(tǒng)的安裝，要在建筑物圍護結(jié)構(gòu)施工完，障礙物已清理，地面無雜物的條件下進行。上海風(fēng)管加工對空氣潔凈系統(tǒng)的安裝，應(yīng)在建筑物內(nèi)部安裝部件的地面已做好，墻面已抹灰完畢，室內(nèi)無灰塵飛揚或有防塵措施的條件下進行。一般除塵系統(tǒng)風(fēng)管安裝宜在廠房的工藝設(shè)備安裝完或設(shè)備基礎(chǔ)已確定，設(shè)備連接器、罩體方位已知的情況下進行。檢查現(xiàn)場預(yù)留孔洞位置、尺寸應(yīng)符合圖紙要求，每邊比實際截面大100mm。上海風(fēng)管加工廠作業(yè)地點要有相應(yīng)的輔助設(shè)施，如梯子、架子、安全防護、消防器材，并有施工員的技術(shù)、質(zhì)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(fēng)管道材質(zhì)要求：各種安裝材料應(yīng)具有出廠合格證明書或質(zhì)量鑒定文件及產(chǎn)品清單。風(fēng)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(fēng)口等部件應(yīng)檢查調(diào)節(jié)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(yīng)符合產(chǎn)品質(zhì)量要求。鐵皮管道廠家在制作時,其所用板材、螺旋風(fēng)管廠家型材以及其他主要成品材料制作要求十分嚴(yán)格。焊縫應(yīng)作外觀檢查,不應(yīng)有氣孔、砂眼、夾渣、裂紋等缺陷,焊接后鋼板的變形應(yīng)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(fēng)管的風(fēng)道與風(fēng)口接合用帶保溫層的軟管連接。鐵皮風(fēng)管的風(fēng)道安裝應(yīng)平、直, 共板風(fēng)管主風(fēng)道安裝不直度≤1.5㎜/m,不平度≤1㎜/m。鐵皮風(fēng)管和配件表面平整、圓弧均勻、縱向接縫應(yīng)錯開,咬口縫應(yīng)緊密,寬度均勻。鐵皮管道廠家介紹鐵皮風(fēng)管除具有剛度好、強度大的優(yōu)點外，上海通風(fēng)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(fù)合風(fēng)管強度弱，外壁易破損的弱點，發(fā)揚了鍍鋅鐵皮的優(yōu)勢，風(fēng)管廠家使用壽命更長，且美觀大方，更顯尊貴本色。內(nèi)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.