Installation method of BL flange of A105 blind plate

The installation of BL flange of A105 blind plate means that the gasket is placed between the two flange sealing surfaces. After tightening the nut, the specific pressure on the gasket surface reaches a certain value, and the deformation occurs, and the uneven parts on the sealing surface are filled, so that the connection is tight. However, flange blind plates with different pressures have different thicknesses and use different bolts. In oil medium system, A105 blind BL flange does not need to be galvanized, but in other medium system, A105 blind BL flange should be hot-dip galvanized. The weight of galvanized layer is 610g / m2, and the quality of BL flange of A105 blind plate after hot-dip galvanizing shall be inspected according to the national standard.