1. the direction of air flow in the ventilation pipe. The valve opening and closing direction and opening degree shall be marked clearly and accurately.

　　2. 濟南通風管道工程在道密閉閥門工程口部的管道與配件，應采用厚2-3mm的鋼板焊接制作，其焊縫應飽滿.均勻.嚴密。

　　2. Ji'nan ventilation pipe project in the first closed valve to the mouth of the pipe and fittings should be welded by thick 2-3mm steel plate, the weld should be full, uniform, tight.

　　3.工程測壓管在防護密閉門外的一端應設有往下的彎頭，另一端宜設在通風機房或控制室，并應安裝球閥。通過防毒通道的測壓管，其接口應采用焊接。

　　3. the pressure measuring pipe of the project shall be provided with a downward elbow at one end of the protective airtight door, and the other end shall be arranged in the ventilation room or the control room, and the ball valve shall be installed. Through the measuring tube of the gas passage, the interface shall be welded.

　　4.染毒區的通風管道應采用焊接連接。通風管道與密閉閥門應采用帶密閉槽的法蘭連接，其接觸應平整;法蘭墊圈應采用整圈無接口橡膠密封圈。

　　4. the ventilation duct in the contaminated area shall be welded. The ventilation pipe and the airtight valve should be connected with flange with airtight groove, and the contact should be smooth. The flange washer should adopt the whole circle without interface rubber sealing ring.

　　5.通風管的測定孔.洗消取樣管應與管同時制作。測定孔和洗消取樣管應封堵。

　　5. determination holes for ventilation pipes. Wash out sampling tubes shall be made simultaneously with tubes. The measuring hole and the decontamination sampling tube shall be sealed.

　　6. 主體工程內通風管與配件的鋼板厚度應符合設計要求。當設計無具體要求時，鋼板厚度應大于0.75mm。

　　6. the thickness of the steel plate of the ventilation pipe and fittings shall comply with the design requirements. When the design has no specific requirements, the steel plate thickness should be greater than 0.75mm.

　　法蘭用料應分類碼法放，露天防止應采取防雨、雪措施.減少生銹現象。通風管道應碼放在平整無積水，寬敞的場地，碼放時應按系統編號，整齊、合理、便于裝運。

　　Flange material should be classified code method, open to prevent rain and snow measures should be taken to reduce the phenomenon of rust. The ventilation pipe should be stacked without water in the flat, spacious venues should be stacked according to system number, orderly, reasonable and convenient for shipment.

　　還需要注意在涂漆時應使漆膜均勻，不得有堆積、漏涂、皺紋、氣泡及混色等缺陷。普通鋼板在壓口時必須先噴一道防銹漆，保證咬縫內不易生銹。

　　It should also be noted that the paint film should be made even, without any defects such as accumulation, leakage, wrinkles, bubbles and mixed colors. Ordinary steel plate must be sprayed at the mouth of a rust proof paint, to ensure that the joints are not easy to rust.

　　要保持鍍鋅鋼板表面光滑潔凈，放在寬敞干燥的隔潮木頭 墊架上，疊放整齊。不銹鋼板、鋁板要里靠在木架上，不要平迭，以免拖動時刮傷表面，下料時應使用不產生劃痕的劃線工具。操作時應使用木錘或有橡膠皮套的錘子，不得使用鐵錘，以免落錘點產生銹斑。

　　To keep the galvanized steel surface smooth and clean, put on the spacious dry wooden shelf, stacked neatly. Stainless steel plate, aluminum plate to depending on the gallows, not flat, so as not to drive when scratching the surface, should use the scribing tool does not produce scratches when feeding. The operation should use wooden hammer or rubber leather hammer, hammer shall be used, so as not to drop point rust.

　　本文由濟南通風管道工程為您提供，我們的網站是:http://www.pvcbox.cn/我們將以全心全意的熱情為您提供更的服務，歡迎您的訪問!

　　This article is provided by the Ji'nan ventilation pipeline project. Our website is: http://www.pvcbox.cn/, we will provide you with better service with your wholehearted enthusiasm, and welcome your visit!

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