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 BF20 wedge flow sensor butt welding flan 

Conditions for the media more and more relaxed circumstances, such as low non-clean air, low pressure circulating water, it has the advantage of relatively cheap. Welded flange, nominal pressure of no more than 2.5MPa applied to the pipe connection, welded flange sealing surface can be made smooth type, concave type and tenon trough of three. Smooth welded flange-type applications with the largest, welded flange two other methods in use is relatively common.
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