Steel flanges
This is the tenth edition of CSA Z245.12, Steel flanges . It supersedes the previous editions published in 2021, 2017, 2013, 2009, 2005, 2001, 1996, 1991, and 1985. This Standard covers the requirements for steel flanges intended to be used for transporting fluids as specified in CSA Z662. The following are the major changes to this edition
This Standard was prepared by the Subcommittee on Materials, under the jurisdiction of the Technical Committee on Petroleum and Natural Gas Industry Pipeline Systems and Materials and the Strategic Steering Committee on Liquid and Gaseous Energy Systems, and has been formally approved by the Technical Committee
This Standard covers wrought steel welding neck and blind flanges primarily intended for use in oil or gas pipeline systems.
Size, grade, nominal pressure class, and category 1.2.1 Size This Standard covers flanges in sizes from NPS 1/2 to NPS 60 (see Table A.1).
For other than sour service, this Standard covers flanges from Grade 248 to Grade 690. For sour service, this Standard covers flanges from Grade 248 to Grade 483.
Note:
This Standard covers flanges having cold working-pressure ratings designated by nominal pressure classes from PN 20 to PN 420. The standard nominal pressure classes are shown in Table 1. Note: ASME class designations are shown in Table B.1.
This Standard covers flanges in the following categories
Note: A flange cannot be classified as Category II if it has not been notch-toughness tested
This Standard does not cover assemblies. Note: An assembly is a grouping of fittings or flanges, or both, joined by one or more circumferential welds.
In this Standard, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the Standard; "should" is used to express a recommendation or that which is advised but not required; and "may" is used to express an option or that which is permissible within the limits of the Standard. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.
| SDO | CSA: Canadian Standards Association |
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| Publication Date | Jan. 1, 2025 |
| Language | en - English |
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