Plate stainless steel flanges are cut and machined from plate – Table ‘D’, Table ‘E’, etc. Standard sealing face is Raised Face (RF). Flanges are joined to each other by bolts, and to the piping system by welding or threading (or loose when stub ends are used).įorged stainless steel flanges are designed to the following common pressure ratings:Ĭlasses 150, 300, 600, 900, 15. ASTM A182M (3000lb NPT and socket weld).Ī flange is a ring of steel (forged, cut from plate, or rolled) designed to connect sections of pipe, or to join pipe to a pressure vessel, valve, pump or other integral flanged assembly.Socket weld fittings are used in high pressure piping systems and available in grade 316L to suit schedule 80S wall thickness piping. Piping systems can be connected using screwed fittings – BSP threaded (“150lb”) low pressure fittings and NPT class 3000 high pressure fittings in Grade 316. Return bends 180° – long radius and short radius.īutt welding fittings can be supplied in either seamless or welded construction and are covered by specifications:ĪSTM A403M and ASTM A815M for Duplex grades.Elbows 45° and 90° – long radius and short radius.A welded system utilises a minimum of installation space.Ītlas Steels supply butt welding fittings in the following configuration.Smooth inner surface and gradual direction changes reduce pressure losses and turbulence and minimise the action of corrosion and erosion.The continuous metal structure formed between pipe and fitting adds strength to the system.Welding a fitting to the pipe means that it is permanently leakproof.These are specified by the same DN or NPS designator and schedule numbering system as for pipe and enable joining to each other and to equipment such as vessels and valves.Ī piping system using butt welding fittings has many inherent advantages over other forms. The fabrication of piping systems is made possible by the availability of complementary fittings and flanges. Stainless steel piping systems can be joined by butt welding and, in the heavier 40S and 80S schedules, with threaded connections. Please contact your nearest Atlas Steels Service Centre if non-standard product is required and we will enquire about its availability through our global supply network of mills and stockists.Ītlas Steels locations and contacts can be found in main menu of this website.įittings and Flanges for Stainless Steel Pipe The information provided is for standard stock product and does not encapsulate all available combinations. Stainless Steel Pipe Fittings and FlangesĮlbows, Tees, Reducers, Caps, Stub Ends & Flanges (ANSI, Table E & Table D). Aluminium Sheet, Plate and Treadplate Product Specifications.Carbon Steel Tube, Pipe and Fittings Product Specification.Carbon Steel Heat Exchanger, Hydraulic and Pneumatic Tube.Stainless Steel, Tube, Pipe and Fittings Product Specifications.Stainless Steel Pipe, Fittings and Flanges.Stainless Steel Tube, Pipe and Fittings.Stainless Steel Sheet, Coil, Strip and Plate Product Specifications.Stainless Steel Sheet, Coil, Strip and Plate.Stainless and Engineering Steel Bar and Wire Product Specifications.Stainless and Engineering Steel Bar and Wire.
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