Pressure testing and pipeline compensation issues
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Aluminum pipes are lightweight; whether to use water pressure or air pressure – the specifications state that a water pressure test should be used? Is it necessary to install compensators for pipes longer than 50 meters? As far as I know, steam pipes only have a π-shaped compensator every 80 meters or so
Try to avoid pneumatic testing; prefer hydraulic testing. The compensator is primarily determined by the magnitude of temperature differences in that area; if the temperature differences are small, a greater distance can be used
Generally, water pressure is used; air pressure is too dangerous. Compensation depends on the temperature; if it’s such a short period and the temperature is normal, then no compensation is needed