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long weld neck flange stock

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  • [Industry News] Flat welding flange vs butt-welding flange

    The two sealing faces of the bolt knead each other to form the flange gasket and seal, but this together also leads to the failure of the seal. In order to maintain the seal, you have to maintain a huge bolt force, and for that, you have to make the bolt very large. Large bolts have to match large

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