How much pressure can a welded pipe withstand?

The pressure bearing capacity of a welded pipe (such as ERW steel pipe, SSAW steel pipe) refers to the maximum pressure it can withstand under internal or external pressure.

The pressure bearing capacity of ordinary welded steel pipes should be less than 1.6Mpa, which is suitable for steam, condensate and hot water pipes with temperatures below 200 degrees Celsius. Seamless steel pipes usually need to withstand pressures exceeding 1.0Mpa, which are suitable for steam pipes with temperatures exceeding 200 degrees Celsius, or hot water pipes exceeding 1.6Mpa and temperatures below 180 degrees Celsius.

The main factors affecting the pressure bearing capacity of welded pipes include:

1.Steel pipe material: High-strength, wear-resistant and corrosion-resistant materials can improve the pressure bearing capacity.

2. Welding quality: Welded pipes with high welding quality have stronger pressure bearing capacity.

3. Wall thickness: The thicker the wall, the stronger the pressure bearing capacity.

4. Steel pipe diameter: A larger diameter usually means a higher pressure bearing capacity.

The pressure bearing capacity of a welded pipe is an important indicator of its quality and safety performance. The specific pressure bearing capacity of the welded pipe needs to be determined according to the actual application scenario, specifications and standards.