Bellows Systems uses several standard testing and inspection processes to verify metal bellows and expansion joints. Here are some of the most common methods:
Visual inspection: Visual inspection is often the first step in verifying metal bellows and expansion joints. This involves a careful examination of the product for any signs of damage, corrosion, or other defects.
Hydrostatic testing: Hydrostatic testing is a method of testing the pressure capacity of metal bellows and expansion joints by filling them with water or another liquid and pressurizing them to a predetermined level.
Leak testing: Air leak testing is a method of testing the integrity of metal bellows and expansion joints by pressurizing them with gas (air) and using a surfactant (foaming agent) to detect any leaks.
Penetrant Testing (PT ) – also known as liquid penetrant inspection (LPI) or dye penetrant testing – is based on the properties of surface wetting and capillary action, which causes a liquid to rise when confined to small surface openings/ defects.
X-ray (Radiography-RT) testing: X-ray testing are non-destructive testing methods used to detect any volumetric defects or cracks in the metal bellows and expansion joints welds.
Burst testing: Burst testing is a destructive testing method that involves pressurizing the metal bellows and expansion joints until they fail. This is done to determine the maximum pressure that the product can withstand before failure.
Pressure cycling: Pressure cycling is a method of testing metal bellows and expansion joints by repeatedly cycling them between high and low pressure to simulate the conditions of actual use.
The specific testing and inspection methods used will depend on the requirements of the application and the standards set by regulatory bodies.
Bellows Systems has qualified quality control inspectors that will typically perform these tests and inspections to ensure their products meet industry standards and customer requirements.