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the tightness of welded joints

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  • Six methods to detect the tightness of welded joints

    Submersion test For small containers or pipes with low internal pressure. Fill the container or pipeline with compressed air with a certain pressure (0.4-0.5MPa) before inspection. Then submerge in water to check the tightness, such as right leakage; bubbles must occur in the water. This is also a c