What type of flange is used for connecting glass-lined pipes? ?

The connection between the pipe ends of glass-lined equipment and pipelines is generally achieved using slip flanges, with gaskets in between; these gaskets are usually made of asbestos wrapped in PTFE. Slip flanges designed specifically for glass-lined equipment typically have a pressure rating of 6 kilograms, though some also have a rating of 10 kilograms. They consist of two half-portions that come together to form one unit, and their sizes range from DN50 to DN200. The method of connection involves placing one slip flange on the pipe end of the glass-lined equipment and another at one end of the pipeline; bolts are then inserted through both flanges, which are tightened using nuts. It is important to apply force symmetrically and evenly during tightening to ensure a proper seal. For the connection between distillation tanks and tower sections, clamps are generally used, with only a small portion employing fixed flat-weld flanges.

Can the flange on the glass-lined equipment (slip-on flange) be directly connected to the flange of the external steel pipe fitting (plate flat weld flange)? ?

Flange standards must be the same in order to connect directly.