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Z245.12-17
Steel flanges- 발행일 : 2017-01-01
- 발행기관 : CSA
상세정보
| 분야 | |
|---|---|
| 적용범위 | Preface This is the eighth edition of CSA Z245.12, Steel flanges. It supersedes the previous editions published in 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 CAN/CSA-Z662.? Changes to this edition include the following:? a) addition of manufacturing procedure specification requirements (Clause 6.4);? b) addition of inspection and test plan requirements (Clause 6.5);? c) revised heat treatment procedures and records requirements (Clause 8);? d) revised test frequency requirements (Clause 9.1.3);? e) revised certification requirements (Clause 15); and? f) revised Annex C (now a mandatory Annex).? Scope 1.1 General? This Standard covers wrought steel welding neck and blind flanges primarily intended for use in oil or gas pipeline systems.? 1.2 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.)? 1.2.2 Grade? 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: The standard grades are Grades 248, 290, 317, 359, 386, 414, 448, 483, 550, 620, and 690 (see Table 4); however, intermediate grades may also be used.? 1.2.3 Nominal pressure class? 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. (ASME class designations are shown in Table B.1.)? 1.2.4 Category? This Standard covers flanges in the following categories:? a) Category I: flanges without requirements for proven notch-toughness properties; and? b) Category II: flanges with requirements for proven notch-toughness properties.? 1.3 Assemblies? 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.? 1.4 Terminology? 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. |
| 국제분류(ICS)코드 | |
| 페이지수 | 63 |
| Edition |
이력정보
| No. | 표준번호 | 표준명 | 발행일 | 상태 |
|---|---|---|---|---|
| 1 | CSA Z245.12:21상세보기 | Steel flanges | 2021-01-01 | 표준 |
| 2 | Z245.12-17상세보기 | Steel flanges | 2017-01-01 | 폐지 |
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