ASME B16.5-2013 Pipe Flanges and Flanged Fittings-NPS1/2TO24INCH法兰标准
CONTENTSForeword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . vi
Committee Roster . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ix
Correspondence With the B16 Committee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . x
Summary of Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xi
1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Pressure–Temperature Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
3 Component Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
4 Marking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
5 Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
7 Tolerances . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
8 Pressure Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figures
1 Bevel for Outside Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2 Bevel for Inside Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
3 Bevel for Combined Thickness . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4 Straight Hub Welding Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
5 Method of Designating Outlets of Reducing Fittings in Specifications . . . . . 16
6 End Flange Facings and Their Relationship to Flange Thickness and
Center-to-End and End-to-End Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
7 Bevel for Wall Thicknesses t From 5 mm to 22 mm Inclusive . . . . . . . . . . . . . 19
8 Bevel for Wall Thicknesses t Greater Than 22 mm . . . . . . . . . . . . . . . . . . . . . . . . 19
9 Inside Contour for Use With Rectangular Backing Ring . . . . . . . . . . . . . . . . . . . 20
10 Inside Contour for Use With Taper Backing Ring . . . . . . . . . . . . . . . . . . . . . . . . . 20
11 Thread Length for Connection Tapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
12 Socket Welding for Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
13 Bosses for Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
14 Butt Welding for Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
15 Method of Designating Location of Auxiliary Connections When
Specified . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Tables
1A List of Material Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1B List of Bolting Specifications Applicable ASTM Specifications . . . . . . . . . . . . . 8
1C Flange Bolting Dimensional Recommendations . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2-1.1 Pressure–Temperature Ratings for Group 1.1 Materials . . . . . . . . . . . . . . . . . . . 23
2-1.2 Pressure–Temperature Ratings for Group 1.2 Materials . . . . . . . . . . . . . . . . . . . 24
2-1.3 Pressure–Temperature Ratings for Group 1.3 Materials . . . . . . . . . . . . . . . . . . . 25
2-1.4 Pressure–Temperature Ratings for Group 1.4 Materials . . . . . . . . . . . . . . . . . . . 26
2-1.5 Pressure–Temperature Ratings for Group 1.5 Materials . . . . . . . . . . . . . . . . . . . 27
2-1.7 Pressure–Temperature Ratings for Group 1.7 Materials . . . . . . . . . . . . . . . . . . . 28
2-1.9 Pressure–Temperature Ratings for Group 1.9 Materials . . . . . . . . . . . . . . . . . . . 29
2-1.10 Pressure–Temperature Ratings for Group 1.10 Materials . . . . . . . . . . . . . . . . . . 30
2-1.11 Pressure–Temperature Ratings for Group 1.11 Materials . . . . . . . . . . . . . . . . . . 31
2-1.13 Pressure–Temperature Ratings for Group 1.13 Materials . . . . . . . . . . . . . . . . . . 32
2-1.14 Pressure–Temperature Ratings for Group 1.14 Materials . . . . . . . . . . . . . . . . . . 33
2-1.15 Pressure–Temperature Ratings for Group 1.15 Materials . . . . . . . . . . . . . . . . . . 34
2-1.17 Pressure–Temperature Ratings for Group 1.17 Materials . . . . . . . . . . . . . . . . . . 35
2-1.18 Pressure–Temperature Ratings for Group 1.18 Materials . . . . . . . . . . . . . . . . . . 36
2-2.1 Pressure–Temperature Ratings for Group 2.1 Materials . . . . . . . . . . . . . . . . . . . 37
2-2.2 Pressure–Temperature Ratings for Group 2.2 Materials . . . . . . . . . . . . . . . . . . . 38
2-2.3 Pressure–Temperature Ratings for Group 2.3 Materials . . . . . . . . . . . . . . . . . . . 39
2-2.4 Pressure–Temperature Ratings for Group 2.4 Materials . . . . . . . . . . . . . . . . . . . 40
2-2.5 Pressure–Temperature Ratings for Group 2.5 Materials . . . . . . . . . . . . . . . . . . . 41
2-2.6 Pressure–Temperature Ratings for Group 2.6 Materials . . . . . . . . . . . . . . . . . . . 42
2-2.7 Pressure–Temperature Ratings for Group 2.7 Materials . . . . . . . . . . . . . . . . . . . 43
2-2.8 Pressure–Temperature Ratings for Group 2.8 Materials . . . . . . . . . . . . . . . . . . . 44
2-2.9 Pressure–Temperature Ratings for Group 2.9 Materials . . . . . . . . . . . . . . . . . . . 45
2-2.10 Pressure–Temperature Ratings for Group 2.10 Materials . . . . . . . . . . . . . . . . . . 46
2-2.11 Pressure–Temperature Ratings for Group 2.11 Materials . . . . . . . . . . . . . . . . . . 47
2-2.12 Pressure–Temperature Ratings for Group 2.12 Materials . . . . . . . . . . . . . . . . . . 48
2-3.1 Pressure–Temperature Ratings for Group 3.1 Materials . . . . . . . . . . . . . . . . . . . 49
2-3.2 Pressure–Temperature Ratings for Group 3.2 Materials . . . . . . . . . . . . . . . . . . . 49
2-3.3 Pressure–Temperature Ratings for Group 3.3 Materials . . . . . . . . . . . . . . . . . . . 50
2-3.4 Pressure–Temperature Ratings for Group 3.4 Materials . . . . . . . . . . . . . . . . . . . 50
2-3.5 Pressure–Temperature Ratings for Group 3.5 Materials . . . . . . . . . . . . . . . . . . . 51
2-3.6 Pressure–Temperature Ratings for Group 3.6 Materials . . . . . . . . . . . . . . . . . . . 52
2-3.7 Pressure–Temperature Ratings for Group 3.7 Materials . . . . . . . . . . . . . . . . . . . 53
2-3.8 Pressure–Temperature Ratings for Group 3.8 Materials . . . . . . . . . . . . . . . . . . . 54
2-3.9 Pressure–Temperature Ratings for Group 3.9 Materials . . . . . . . . . . . . . . . . . . . 55
2-3.10 Pressure–Temperature Ratings for Group 3.10 Materials . . . . . . . . . . . . . . . . . . 56
2-3.11 Pressure–Temperature Ratings for Group 3.11 Materials . . . . . . . . . . . . . . . . . . 56
2-3.12 Pressure–Temperature Ratings for Group 3.12 Materials . . . . . . . . . . . . . . . . . . 57
2-3.13 Pressure–Temperature Ratings for Group 3.13 Materials . . . . . . . . . . . . . . . . . . 58
2-3.14 Pressure–Temperature Ratings for Group 3.14 Materials . . . . . . . . . . . . . . . . . . 59
2-3.15 Pressure–Temperature Ratings for Group 3.15 Materials . . . . . . . . . . . . . . . . . . 60
2-3.16 Pressure–Temperature Ratings for Group 3.16 Materials . . . . . . . . . . . . . . . . . . 61
2-3.17 Pressure–Temperature Ratings for Group 3.17 Materials . . . . . . . . . . . . . . . . . . 62
2-3.19 Pressure–Temperature Ratings for Group 3.19 Materials . . . . . . . . . . . . . . . . . . 62
3 Permissible Imperfections in Flange Facing Finish for Raised Face and
Large Male and Female Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
4 Dimensions of Facings (Other Than Ring Joints, All Pressure Rating
Classes) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
5 Dimensions of Ring-Joint Facings (All Pressure Rating Classes) . . . . . . . . . . . 66
6 Reducing Threaded and Slip-On Flanges for Classes 150 Through
2500 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
7 Templates for Drilling Class 150 Pipe Flanges and Flanged Fittings . . . . . . . 71
8 Dimensions of Class 150 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72
9 Dimensions of Class 150 Flanged Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
10 Templates for Drilling Class 300 Pipe Flanges and Flanged Fittings . . . . . . . 80
11 Dimensions of Class 300 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
12 Dimensions of Class 300 Flanged Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 84
13 Templates for Drilling Class 400 Pipe Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
14 Dimensions of Class 400 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
15 Templates for Drilling Class 600 Pipe Flanges and Flanged Fittings . . . . . . . 91
16 Dimensions of Class 600 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
17 Templates for Drilling Class 900 Pipe Flanges and Flanged Fittings . . . . . . . 94
18 Dimensions of Class 900 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 95
19 Templates for Drilling Class 1500 Pipe Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
20 Dimensions of Class 1500 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
21 Templates for Drilling Class 2500 Pipe Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
22 Dimensions of Class 2500 Flanges . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
Mandatory Appendices
I Threading of Pipe for American National Standard Threaded Flanges . . . . . 103
II Pressure–Temperature Ratings and Dimensional Data for Classes 150, 300,
400, 600, 900, 1500, and 2500 Flanges and Classes 150 and 300
Flanged Fittings in U.S. Customary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
III References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 193
Nonmandatory Appendices
A Method Used for Establishing Pressure–Temperature Ratings . . . . . . . . . . . . . 196
B Limiting Dimensions of Gaskets Other Than Ring Joint Gaskets . . . . . . . . . . 200
C Method for Calculating Bolt Lengths . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 202
D Quality System Program . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204
E Dimensions of Classes 400, 600, 900, 1500, and 2500 Flanged Fittings in
U.S. Customary Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 205
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PIPE FLANGES ANDFLANGED FITTINGSNPS 1⁄2 THROUGH NPS 24 METRIC/INCH STANDARD1 SCOPE1.1 General(a) This Standard covers pressure–temperatureratings, materials, dimensions, tolerances, marking, testing, and methods ofdesignating openings for pipe flanges and flanged fittings. Included are(1) flanges with rating classdesignations 150, 300,400, 600, 900, and 1500 in sizes NPS 1⁄2 through NPS 24and flanges with ratingclass designation 2500 in sizes NPS 1⁄2 through NPS 12, with requirements given in both metricand U.S. Customary units with diameter of bolts and flange bolt holes expressedin inch units(2) flanged fittings with rating classdesignation150 and 300 in sizes NPS 1⁄2 through NPS 24, with requirements given in both metricand U.S. Customary units with diameter of bolts and flange bolt holes expressedin inch units(3) flanged fittings with rating classdesignation400, 600, 900, and 1500 in sizes NPS 1⁄2 through NPS 24and flanged fittings with rating classdesignation 2500in sizes 1⁄2 throughNPS 12 that are acknowledged in Nonmandatory Appendix E in which only U.S. Customaryunits are provided(b) This Standard is limited to(1) flanges and flanged fittings madefrom cast or forged materials(2) blind flanges and certain reducingflanges made from cast, forged, or plate materials Also included in thisStandard are requirements and recommendations regarding flange bolting,gaskets, and joints.1.2 ReferencesCodes, standards, and specifications, containingprovisions to the extent reference d herein, constitute requirements of thisStandard. These reference documents are listed in Mandatory Appendix III.1.3 Time ofPurchase, Manufacture, or InstallationThe pressure–temperature ratings in this Standard are applicableupon its publication to all flanges and flanged fittings within its scope,which otherwise meet its requirements. For unused flanges or flanged fittings maintainedin inventory, the manufacturer of the flange or flanged fittings may certify conformanceto this Edition, provided that it can be demonstrated that all requirements ofthis Edition have been met. Where such components were installed in accordancewith the pressure–temperature ratings of an earlier edition of this Standard,those ratings are applicable except as may be governed by the applicable codeor regulation.1.4 UserAccountabilityThis Standard cites duties and responsibilities that are tobe assumed by the flange or flanged fitting user in the areas of, for example,application, installation, system hydrostatic testing, operation, and materialselection.1.5 QualitySystemsRequirements relating to the product manufacturer’s QualitySystem Program are described in Nonmandatory Appendix D.1.6 RelevantUnitsThis Standard states values in both SI (Metric) and U.S. Customary units. As an exception,diameter of bolts and flange bolt holes are expressed in inch units only. Thesesystems of units are to be regarded separately as standard. Within the text,the U.S. Customary units are shown in parentheses or in separate tables thatappear in Mandatory Appendix II. The values stated in each system are not exactequivalents; therefore, it is required that each system of units be usedindependently of the other. Except for diameter of bolts and flange bolt holes,combining values from the two systems constitutes nonconformance with theStandard.1.7 Selection ofMaterialsCriteria for selection of materials suitable forparticular fluid service are not within the scope of this Standard.1.8 ConventionFor determining conformance with this Standard, the conventionfor fixing significant digits where limits (maximum and minimum values) arespecified shall be as defined in ASTM E29. This requires that an observed orcalculated value be rounded off to the nearest unit in the last right-handdigit used for expressing the limit. Decimal values and tolerances do not implya particular method of measurement.
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