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BS EN ISO 27509:2020

BS EN ISO 27509:2020

$215.11

Petroleum and natural gas industries. Compact flanged connections with IX seal ring

Published By Publication Date Number of Pages
BSI 2020 116
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This document specifies detailed manufacturing requirements for circular steel and nickel alloy compact flanged connections and associated seal rings, for designated pressures and temperatures in class designations CL 150 ( PN 20) to CL 1500 ( PN 260) for nominal sizes from DN 15 (NPS ½) to DN 1200 (NPS 48), and for CL 2500 ( PN 420) for nominal sizes from DN 15 (NPS ½) to DN 600 (NPS 24).

NOTE

NPS is expressed in accordance with ASME B36.10M and ASME B36.19M .

This document is applicable to welding neck flanges, blind flanges, paddle spacers and spacer blinds (paddle blanks), valve/equipment integral flanges, orifice spacers, reducing threaded flanges and rigid interfaces for use in process piping for the petroleum, petrochemical and natural gas industries.

This document is applicable within a temperature range from ?196 °C to +250 °C.

This document is not applicable for external pressure.

PDF Catalog

PDF Pages PDF Title
2 undefined
4 European foreword
Endorsement notice
7 Foreword
9 Introduction
10 1 Scope
2 Normative references
11 3 Terms and definitions
4 Abbreviations and symbols
4.1 Abbreviated terms
12 4.2 Symbols
14 5 Design
5.1 General
15 5.2 Design principles
17 5.3 Assembly requirements
5.4 Standard components
18 5.5 Units of measurements
5.6 Rounding
5.7 Conformance with piping design codes
19 5.8 Conformance with this document
6 Designation
6.1 Designation of flanges
6.2 Designation of seal rings
20 7 Materials
7.1 General
7.2 Flange materials
7.3 Bolting materials
21 7.4 Seal ring materials
22 8 Strength, pressure/temperature ratings and leak tightness
8.1 General
8.2 Pressure/temperature ratings
23 8.3 Pressure testing and leak tightness
9 Dimensions of flanges
9.1 General
24 9.2 Weld neck dimensions
32 9.3 Blind flange (BL) dimensions
35 9.4 Integral flange (IF) dimensions
46 9.5 Rigid interface dimensions
48 9.6 Dimensions of paddle blanks (PB) and paddle spacers (PS)
50 9.7 Handle and lifting lugs
51 9.8 Dimensions of orifice spacers (OS)
53 9.9 Dimensions of reducing threaded flanges
54 9.10 Auxiliary connections
9.11 Flange tolerances
56 9.12 Surface finish
57 10 Marking of flanges
10.1 Flanges other than integral flanges
10.2 Manufacturer’s name or trademark
10.3 Nominal size
10.4 Pressure class designation
10.5 Pipe dimensions
10.6 Material identification
58 10.7 Identification of internally threaded flanges
10.8 Material traceability
10.9 Marking examples
10.10 Stamping
11 Dimensions of seal rings
62 12 Manufacture, testing and inspection of IX seal rings
13 Coating and colour coding
63 14 Marking of seal rings
15 Quality management systems
16 Bolt dimensions and masses
64 Annex A (normative) Pressure temperature ratings and load capacity
68 Annex B (normative) Integral flange angle selection
79 Annex C (normative) Bolt dimensions and masses
86 Annex D (normative) Handling, installation, assembly and repair of flanges
99 Annex E (informative) Mass of flanges
109 Annex F (informative) Metric bolting
111 Annex G (informative) Additional information on bibliographical references
113 Bibliography

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BS EN ISO 27509:2020
$215.11