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、管道的坡度应按图纸的要求进行调整，调整方法可以利用支座达到坡度要求，焊缝应设置在便于检修、观察的地方。

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、与传动设备连接的管道，安装前内部要处理干净，焊接固定管口一般应远离设备，以避免焊接产生应力对传动设备安装精度的影响。

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、管道与机器连接前，应防止强力相对，在自由状态下检查法兰的平行度和同轴度。

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、阀应垂直安装，在投入试运行时，要及时调校阀。阀的后续调校在系统上进行，开启和回座压力要符合设计文件的规定。

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、阀门安装前，按设计文件核对其型号，并按介质流向确定其安装方向。当阀门与管道以法兰或螺纹方式连接时，阀门应在关闭状态下安装；如以焊接方式安装时，阀门不得关闭。

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、仪表元件的临时替代：所有仪表元件安装时，均采用临时元件替代，等试压、冲洗、吹扫工作结束后，投料前再正式安装。

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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