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1. Before the installation of pipelines, the equipment nozzles, embedded parts, reserved holes, steel structures and other contents related to the installation of pipelines shall be reviewed.

2、管道的坡度應按圖紙的要求進行調整，調整方法可以利用支座達到坡度要求，焊縫應設置在便于檢修、觀察的地方。

2. The slope of the pipeline shall be adjusted according to the requirements of the drawing. The adjustment method can use the support to meet the slope requirements. The weld shall be set at a place convenient for maintenance and observation.

3、與傳動設備連接的管道，安裝前內部要處理干凈，焊接固定管口一般應遠離設備，以避免焊接產生應力對傳動設備安裝精度的影響。

3. The pipes connected with the transmission equipment shall be cleaned internally before installation. The welded fixed pipe orifice shall generally be away from the equipment to avoid the impact of welding stress on the installation accuracy of the transmission equipment.

4、管道與機器連接前，應防止強力相對，在自由狀態下檢查法蘭的平行度和同軸度。

4. Before connecting the pipe with the machine, the relative strength should be prevented, and the parallelism and coaxiality of the flange should be checked in the free state.

5、安全閥應垂直安裝，在投入試運行時，要及時調校安全閥。安全閥的后續調校在系統上進行，開啟和回座壓力要符合設計文件的規定。

5. The safety valve should be installed vertically. When it is put into trial operation, the safety valve should be adjusted in time. The subsequent adjustment of the safety valve shall be carried out on the system, and the opening and reseating pressure shall comply with the provisions of the design documents.

6、閥門安裝前，按設計文件核對其型號，并按介質流向確定其安裝方向。當閥門與管道以法蘭或螺紋方式連接時，閥門應在關閉狀態下安裝；如以焊接方式安裝時，閥門不得關閉。

6. Before installing the valve, check its model according to the design documents, and determine its installation direction according to the flow direction of the medium. When the valve is connected with the pipeline in the form of flange or thread, the valve shall be installed in the closed state; If it is installed by welding, the valve shall not be closed.

7、儀表元件的臨時替代：所有儀表元件安裝時，均采用臨時元件替代，等試壓、沖洗、吹掃工作結束后，投料前再正式安裝。

7. Temporary replacement of instrument elements: all instrument elements shall be replaced by temporary elements during installation, and shall be formally installed after pressure test, flushing and purging, and before feeding.

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