Introduction A flange is an external or internal ridge, or rim (lip), for strength, as the flange of an iron beam such as an I-beam or a T-beam; or for attachment to another object, as the flange on the end of a pipe, steam cylinder, etc., or for a flange of a rail car or tram wheel. Thus flanged wheels are wheels with a flange on one side to keep the wheels from running off the rails. The term "flange" is also used for a kind of tool used to form flanges. The type of flange to be used for a piping application depends, mainly, on the required strength for the flanged joint. Flanges are used, alternatively to welded connections, to facilitate maintenance operations - Pipes with flanges can be assembled and disassembled easily. The flange is the second most used joining method after welding. A flanged joint is composed of three separate and independent although interrelated components; the flanges, the gaskets, and the bolting; which are assembled by yet another influence, the fitter.
International Standards Design Weld Neck Flange Blind Flange Threaded Flange Flat Flange Lapped Flange
According to EN Type Type 11 Type 05 Type 12 Type 01 Type 02 & Type 04
According to DIN DIN 2627 - DIN 2638 DIN 2527 DIN 2558, DIN 2565 - DIN 2569 DIN 2573, DIN 2576 DIN 2641, DIN 2642, DIN 2655, DIN 2656
Similar to ASME flanges, EN1092-1 steel and stainless flanges, have several different versions of raised or none raised faces. According to the European form the seals are indicated by different form: Form: types of Contact Faces Without Raised Face Raised Face (Rz = 160 Mechanical Turned) Raised Face ( Rz = 40 Mechanical Turned) Raised Face (Rz = 16 Mechanical Turned) Tongue According to DIN2512 Groove According to DIN 2512 Male According to DIN 2513 Female According to DIN 2513 Female According to DIN 2514 Male According to DIN 2514
DIN EN 1092-1 Form A Form B1 Form B1 Form B2 Form C Form D Form E Form F Form G Form H