Flanges and Their Types...

Flanges and Their Types In a steel plant there are large numbers of pipe networks. These pipe networks use a large number of flanges. These flanges are made of carbon steel and alloy steel and are of various types, shapes and sizes. A pipe flange is a disc, collar or ring that attaches to pipe with the purpose of providing increased support for strength, blocking off a pipeline or implementing the attachment of more items. Flanges are piping components used for connecting pipes with other piping components like valves, specialties, instrument items like orifice, flow meters etc. They are also used to connect pipes with pumps and other equipment to form a pipework system. They facilitate the dismantling and periodic maintenance of piping components, pumps and equipment etc. They provide easy access for cleaning, inspection or modification. Flanges form semi-permanent connections to join parts which are light enough to be moved with available equipment or which cannot be welded due to heat sensitivity or replacement needs. They are usually welded or screwed into such systems and then joined with bolts. A flanged joint is composed of three separate and independent although interrelated components namely (i) the flanges, (ii) the gaskets, and (iii) the fasteners. Gasket is normally inserted between the two mating flanges to provide a tighter seal. There are numerous types of flanges available. The type and material of a flange to be used is dependent on the service duty of the line. Flanges are either custom built with dimensions provided by the customer or they are manufactured according to a specification as per various national and international standards.  Flanges of different standards are normally not interchangeable and hence are not usually joined. If necessary to do so, they are to be checked to ensure the...