The loose flange can be subdivided into the butt welding ring with neck loose flange, butt welding ring plate loose flange, flat weld ring plate loose flange and flanging ring plate loose flange 4 kinds.
This kind of flange is not welded directly with the pipe, but the flange of the nozzle or the welding ring is used as the sealing contact surface. The loose sleeve flange is used for fastening.It is mainly used in copper, aluminum, lead and other non-ferrous metals and stainless acid resistant steel pipe.
Sizes and styles of Loose Flange that we don’t have in-stock can be made in an expedient manner.
EN1092-1 Forged Loose Flange standard covers pressure-temperature ratings, materials, dimensions, tolerances,marking, testing, and methods of designating openings for pipe flanges and flanged fittings.
DIN 150lbs Carbon Steel Loose Flange:(Material:Rst37.2,St37.2,C22.8)
BS4504 RF Finish Loose Flanges are often used in installations, piping systems or in equipment construction to weld on a pipe. AG can supply suitable loose flanges for every quality, pipe size and pressure class.
ANSI B16.5 Class300 Loose Flanges are used with a corresponding stub-end that "inserts" in the inside of the flange. The main benefit of this type of flange, is that once the pipe welds to the insert stub-end, the flange then can rotate for easier alignment of the bolting holes.However, lap joint flanges and their stub-ends' ability to hold pressure is about the same as slip-on flanges.