神马av_日韩第一页_免费精品一区_神马AV_神马久久久久久久久_日韩无码第一页_色哒哒_无码人妻熟妇av又粗又_国产69久久久欧美黑人A片_日韩欧美亚洲_无码第一页_神马午夜精品91_无码人妻熟妇av又粗,日韩免费人妻无码专区蜜桃,亚洲阿大香蕉,欧美亚洲男人天堂,国产无码精品一区二区,揉着我的奶从后面进去视频,免费全部黄A片免费播放软件,国产色中色,免费看的久久久久,天美传媒部在线观看,久久久久久亚洲综合,大香蕉日韩成人在线视频,久久无码潮喷A片无码高潮动漫,精品久久亚洲熟女,国产欧美精品aaaaa久久,直男国产飞机杯,我的公把我弄高潮了视频,免费的精品一区二区三区片,国产日韩欧美三级,亚州A级片,自拍偷拍亚洲porn,少妇水多A片太爽了,日本久操,成人午夜福利无码不卡视频,国产一区二区不卡亚洲涩情,日韩欧美亚洲综合久久,国产亚洲精品久久孕妇呦呦你懂,国产又粗又长又大精品A片,自偷自拍亚洲综合精品第一页,亚洲欧美熟妇久久久久久久久 ,香蕉视频操逼奶子

In fact, many factories have small workshop areas, but their output is not small. The mechanical area of the workshop accounts for a large proportion of the production area and is densely staffed. It will lead to poor air quality in the workshop, and the adverse environment will affect the production enthusiasm and work efficiency of workers. It is unreasonable for many factories to choose to install ventilation pipes. The use of this device to improve workshop air quality and environmental effects is also evident to all.

根據(jù)本工程的特點，場所要寬敞、明亮、干凈，地面要平整。生產(chǎn)中需要基本機具設(shè)備及電源安全保護裝置齊全。

According to the characteristics of this project, the site should be spacious, bright, clean, and the ground should be flat. Basic machinery, equipment, and power safety protection devices are required to be complete in production.

風管的安裝應(yīng)在障礙物已經(jīng)清除，地面無雜物妨礙施工的情況下進行。

The installation of air ducts should be carried out when obstacles have been removed and there are no debris on the ground that hinders construction.

設(shè)備是在建筑結(jié)構(gòu)、室內(nèi)裝修及內(nèi)部隔斷、地面鋪裝等都做好的情況下安裝的，這時通風系統(tǒng)的干管也做好了。

The equipment is installed with the building structure, interior decoration, internal partitions, and ground paving in place, and the main pipes of the ventilation system are also in place.

制造方法

manufacturing method 

通風、空氣調(diào)節(jié)工程所用主要材料、設(shè)備、成品半成品等應(yīng)具有出廠合格證或質(zhì)量鑒定文件。

The main materials, equipment, finished and semi-finished products used in ventilation and air conditioning engineering should have factory certificates or quality appraisal documents.

通風工程建議按照批準的設(shè)計圖紙進行施工。

Ventilation works must be constructed in accordance with the approved design drawings.

通風管制造的尺寸應(yīng)按圖施工，均以內(nèi)徑為準，連接管應(yīng)與閥體一致。

The dimensions of the ventilation pipe manufacturing should be constructed according to the drawing, and the inner diameter should be used as the standard. The connecting pipe should be consistent with the valve body.

圓形彎管和矩形彎管的彎曲半徑及少節(jié)數(shù)，按《建筑安裝工程施工技術(shù)操作規(guī)程》中有關(guān)規(guī)定執(zhí)行。環(huán)形風管的三通，其夾角為90°。

The bending radius and number of missing sections of circular and rectangular bends shall be in accordance with the relevant provisions of the "Technical Operation Regulations for Construction and Installation Engineering". The tee of the circular air duct has an included angle of 90 °.