Differential boring for milling large container flange sealing surfaces

In the production of large petrochemical containers and nuclear power products, since the manholes and ends of large containers such as towers, tanks and reactors have flanges, these flange sealing surfaces are often machined after the overall welding, otherwise the water is affected. Pressure test seal, in addition to the long-term operation of the equipment, the flange sealing surface will also be corroded or deformed, thus losing the sealing effect, causing the leakage of the medium, causing the toxic medium to hurt or the flammable medium to catch fire.

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