The following requirements are typically considered in the installation design of petrochemical steel pipelines

1. The layout design should conform to the requirements of the process, petrochemical steel pipeline, and instrumentation diagram.

2. The layout of petrochemical steel pipelines should be planned comprehensively, ensuring safety, reliability, and economic rationality, meeting the requirements of construction, operation, and maintenance, and striving for neatness and aesthetics.

3. When determining the location and laying method of petrochemical steel pipelines entering and exiting units, internal and external coordination should be ensured.

4. The laying of plant-wide petrochemical steel pipelines within the plant area should be coordinated with the units, roads, buildings, and structures within the plant area to prevent petrochemical steel pipelines from encircling units and to minimize intersections between petrochemical steel pipelines and railways and roads.

5. Petrochemical steel pipelines should ideally be overhead or laid above ground. If necessary, they can be buried underground or laid in trenches.

6. Petrochemical steel pipelines should preferably be arranged in concentrated rows. Above-ground petrochemical steel pipelines should be laid on pipe racks or piers. 7. When arranging petrochemical steel pipelines on pipe racks and piers, the vertical and horizontal loads on the racks and piers should be balanced.

8. A 10% to 30% margin should be reserved for plant-wide pipe racks and piers (including those crossing culverts), taking into account their load capacity.

9. The layout of petrochemical steel pipelines with special requirements regarding distance, angle, and elevation differences for the transported medium, as well as large-diameter petrochemical steel pipelines, should comply with equipment layout design requirements.

10. The layout of petrochemical steel pipelines should avoid obstructing the installation, maintenance, and passage of equipment, pumps, and their internal components, as well as fire truck access.

11. The layout of petrochemical steel pipelines should ensure the necessary flexibility of the pipeline system. While ensuring the flexibility of the petrochemical steel pipelines and that the forces and moments exerted by the steel pipelines on equipment and pump inlets do not exceed allowable values, the steel pipelines should be as short as possible and have the fewest components.

12. The location of support points should be considered during the planning of petrochemical steel pipelines, and the natural shape of the steel pipelines should be utilized for self-compensation.

13. The layout of petrochemical steel pipelines should ideally follow a gradual upward or downward progression to minimize gas or liquid pockets. If this is unavoidable, venting and drainage systems should be installed according to operational and maintenance requirements. The layout of petrochemical steel pipelines should minimize "dead ends" (unconnected sections).

14. When a petrochemical pipeline with gas-liquid two-phase flow is divided into two or more branches, the pipeline layout should consider symmetry or meet the requirements of the petrochemical pipeline and instrumentation diagram.