Flange Classification Application Production Technology
Flange: classification, application, production technology. Flange (from it. Flansch), usually a flat ring or disk with evenly spaced holes for bolts and studs that are essential for strong and tight connection of pipes, their connection to the machines, apparatus and receptacles for connecting shafts and other rotating parts. Classification flanges flanges. vary in size, method of attachment and the form of a sealing surface.
Depending on the method of welding to the pipeline: Flat – meet the requirements of GOST 12820-80 and are used in the pressure range of up to 1kgs/sm2 25kgs/sm2. Collar – meet the requirements of GOST 12821-80 and are used in the pressure range of up to 1kgs/sm2 200kgs/sm2 Designation types of flanges in the technical documentation of the types of flanges are designated as follows: Butt 1-65-25 st.09G2S GOST 12821-80 1 – flange; 65 – orifice 'DN', 25 – nominal pressure 'Roo', Art . 09G2S – steel grade from which manufactured product. The use of flanges flanges may be elements of the pipe, fitting, shaft, cabinet parts, etc. Flange in the form of separate parts welded or most screwed to the ends of the joined parts.
Flanges products used to connect fittings to the pipes, connect the individual pipe sections together and for joining pipes to various equipment. Flange connections provide tightness and strength of structures, as well as ease of manufacture, disassembly and assembly. The form of the sealing flanges in the pipeline depends on the pressure of the medium, the profile of the material and gaskets.