1. BL Flange Manufacturers china - wrong mouth

　　The staggered seam means that the pipe and the flange are vertical, but the two flanges are not concentric, and the flanges are not concentric, so the surrounding bolts cannot freely penetrate the bolt holes.

　　2. BL Flange Manufacturers china—corrosion effects

　　Because the gasket is corroded by corrosive medium for a long time, the gasket undergoes chemical changes, the corrosive medium penetrates into the gasket, the gasket begins to soften, loses compressive force, and causes flange leakage.

　　3. BL Flange Manufacturers china - partial mouth

　　Eccentricity means that the pipeline and the flange are not perpendicular, not concentric, and the surface of the flange is not parallel. When the internal medium pressure exceeds the load pressure of the gasket, flange leakage will occur.

　　4. BL Flange Manufacturers china - opening

　　The opening is because the flange gap is too large. When the flange gap is too large and external load is caused, the gasket will be impacted or vibrated, lose the pressing force, and gradually lose the kinetic energy of the seal, resulting in failure.

　　5. BL Flange Manufacturers china——Pressure

　　When installing flanges, it is more standard for two flanges to be butted together. However, in the system production, the temperature of the pipeline will change after entering the medium, which will cause the pipeline to expand or deform, so that the flange will be subjected to bending load or shear force, which will easily lead to the failure of the gasket.

　　6. BL Flange Manufacturers china - wrong hole

　　Wrong hole means that the pipe and the flange are concentric, but the distance between the two bolts is greater than the bolt hole.

　　7. BL Flange Manufacturers china - thermal expansion and cold contraction

　　Due to the thermal expansion and contraction of the fluid medium, and the expansion or contraction of the bolt, the gasket will have a gap, and the medium will leak through the pressure.