Analysis of the pressure borne by high-pressure mechanical tubes

In the field of mechanical engineering, high-pressure mechanical tubes are an important part of the transmission fluid medium, and the pressure they bear is a key parameter to ensure the safe operation of the system. So, how much pressure can high-pressure pipes withstand? This mainly depends on the following factors:

1. Material selection

The material of high-pressure mechanical tubes has a decisive influence on their pressure bearing capacity. Common mechanical tube materials include metal materials such as carbon steel, stainless steel, alloy steel, and some non-metallic materials such as plastics and composite materials. Different materials have different strength characteristics and pressure resistance limits. Therefore, when designing high-pressure pipes, appropriate materials must be selected according to actual needs.

2. Design standards and specifications
The design of high-pressure pipes must follow strict standards and specifications, such as international standards ISO, American standards ASME, etc. These standards specify various aspects of pipeline design, including wall thickness calculation, pressure test methods, and determination of safety factors, to ensure that the pipeline has sufficient strength and stability under normal working pressure.

3. Design conditions
In engineering, process operation parameters should not be directly used as design conditions for pressure pipelines. Factors such as fluctuations in process operation, the impact of connected equipment, and the impact of the environment should be considered, and a certain safety margin should be given as design conditions based on process operation parameters. The design conditions mentioned here mainly refer to design pressure and design temperature.

Design pressure of pipelines: should not be lower than the pressure under the most demanding conditions composed of internal pressure (or external pressure) and temperature during normal operation.
The most demanding conditions: refers to the conditions that lead to the maximum wall thickness or the highest nominal pressure level of pipes and pipeline components.
Design pressure determination: Considering the influence of factors such as the hydrostatic column pressure of the medium, the design pressure should generally be slightly higher than the maximum working pressure under the most demanding conditions composed of (or) external pressure and temperature.

4. Actual application scenarios
The actual application scenarios of high-pressure mechanical pipelines will also affect the pressure they withstand. For example, in the petrochemical industry, since the processed medium usually has high temperature and high pressure characteristics, the pipeline is required to withstand higher working pressure. In urban water supply systems, due to the relatively low water pressure, the pressure bearing capacity requirements for pipelines are also correspondingly low.

In order to ensure that high-pressure pipelines operate under safe pressure, in addition to the above factors, a series of measures need to be taken, including regular pressure testing, strict maintenance and maintenance systems, and strengthening professional training of operators. These measures together constitute an important line of defense to ensure the safe operation of high-pressure pipelines.

Conclusion:

The specific value of the pressure that high-pressure mechanical tubes in mechanical engineering withstand varies depending on the material, design standards, and actual application scenarios, and can usually range from tens to thousands of bar. To ensure safety, relevant engineering specifications and standards must be followed to determine the maximum allowable working pressure of a specific pipeline.

Read more: Mechanical Tubing vs. Structural Tubing or Cold Drawn Seamless Tube for Mechanical & Hydraulic