What are the quality tests that are conducted on expansion joints?

At U.S. Bellows, we perform a variety of tests:

• Burst Testing – The objective of the burst test is to determine the ultimate pressure resistance. Primarily conducted on bellows. Normally, hydraulic pressure is slowly increased until failure occurs.
• Dye Penetration Testing – Liquid dye is used to locate leaks or cracks in the bellows.
• Hydro Testing – Bellows are pressurized for 30 minutes to locate leaks or cracks.