1. Small tubes avoid large tubes:
Small tubes are easy to bend and low in cost.
2. The branch pipe avoids the main pipe:
The branch pipe generally has a smaller pipe diameter, and the influence scope and importance of the branch pipe are less than the main pipe.
3. Pressured tubes avoid pressureless tubes (pressure flow tubes avoid gravity flow tubes):
The gradient and flow direction of pressureless tubes (gravity flow tubes) change, which has a greater impact on the flow.
4. The water supply pipe avoids the drain pipe:
In addition to the reason mentioned above, the drain pipe usually has a large diameter and many impurities in the water.
5. Normal temperature pipes avoid high (low) temperature pipes (cold water pipes avoid hot water pipes, non-insulated pipes avoid heat insulation pipes):
The temperature of the pipe is higher than the normal temperature to consider exhaust; below the normal temperature to consider anti-condensation insulation.
6. Low-pressure pipes avoid high-pressure pipes:
High-pressure pipes are expensive to manufacture and require high strength.
7. Gas pipes avoid water pipes:
The power consumption of water flow is large.
8. Metal tubes avoid non-metal tubes:
Metal tubes are easy to bend, cut and connect.
9. General ducts avoid ventilation ducts:
The ventilation ducts are large and difficult to bend.
10. Less valves avoid more valves:
Considering installation, operation, maintenance and other factors.
11. Simple construction to avoid construction is difficult:
This is considered from the aspect of avoiding increasing the difficulty of installation.
12. The small amount of engineering avoids the large amount of engineering:
This is considered from the aspect of avoiding increasing the amount of installation engineering.
13. Pipelines with low technical requirements avoid pipelines with high technical requirements:
This is considered from the aspect of avoiding increasing the difficulty of technical requirements.
14. Less overhauls avoid more overhauls:
This is considered from the perspective of later maintenance.
15. Non-main pipelines avoid main pipelines:
This is considered from the aspect of the importance of functions.
16. Temporary pipeline avoidance pipeline:
This is considered from the aspect of pipeline service life.
17. Newly built pipelines avoid established pipelines:
This is considered in terms of reducing cost, engineering volume and construction difficulty.
Post time: Aug-08-2022