Problems with the sealing of manholes in vertical steel oil tanks
Thread Content
May I ask, for vertical steel oil tanks, the water pattern lines on the manholes use a fine-pattern design; these patterns are much lighter in color compared to the previous design with only three lines. Can asbestos gaskets be used to seal them?
Under the current flange standards, the sealing surfaces of convex flanges have all been changed to serrated water lines. No problem.