Detailed Product Description

There are many different flange standards to be found worldwide. To alloweasy functionality and inter-changeability, these are designed to have standardizeddimensions. Common world standards include ASA/ANSI (USA), PN/DIN (European), BS10(British/Australian), and JIS/KIS (Japanese/Korean).

In most cases these are not interchangeable (eg an ANSI flange will notmate against a JIS flange). Further many of the flanges in each standard aredivided into "pressure classes", allowing flanges to be capable oftaking different pressure ratings. Again these are not generallyinterchangeable (eg an ANSI 150# will not mate with an ANSI 300#). These"pressure classes" also have differing pressure and temperatureratings for different materials.

The flange faces are made to standardized dimensions and are typically"flat face", "raised face", "", or "" styles, although other obscurestyles are possible.

Flange designs are available as "welding neck","slip-on", "boss", "lap joint", "socketweld", "", and also "blind".

Pipe flanges that are made to standards called out by / B16.5 or ASME/ANSIB16.47 are typically made from forged materials and have machined surfaces.They are typically in "Pressure Classes" such as 150#, 300#, 600#, and900# 1500 #; however, ASME B16.47 still recognizes the 75# or "Class75" flange for certain low pressure and low temperature applications.

The type and type are generally specified by the standard(s); however, sometimes thestandards refer to the (B&PVC) for details (see ASME Code Section VIII Division 1 - Appendix 2 ).These flanges are recognized by ASME Pipe Codes such as ASME B31.1 Power , and ASMEB31.3 Process Piping.

Materials for flanges are usually under ASME designation: SA-105(Specification for Carbon Steel Forgings for Piping Applications), SA-266(Specification for Carbon Steel Forgings for Pressure Vessel Components) orSA-182 (Specification for Forged or Rolled Alloy-Steel Pipe Flanges, ForgedFittings, and Valves and Parts for High-Temperature Service)