BS 1560-3.1:1989
Superseded
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Circular flanges for pipes, valves and fittings (Class designated). Steel, cast iron and copper alloy flanges Specification for steel flanges
Hardcopy , PDF
English
30-06-1989
30-11-2004
Foreword
Committees responsible
Specification
1 Scope
2 Ranges of nominal sizes
3 Class designations and pressure/temperature ratings
4 Materials
5 Bolting
6 Repairs
7 Dimensions
8 Flange facings
9 Spot facing or back facing of flanges
10 Tolerances
11 Marking
Appendices
A Information to be supplied by the purchaser
B Application and installation
C Determination of bolt lengths for lapped-type joints
D Recommended bolt lengths for flanges other than
lapped-type
E Recommendations for weld ends of weld-neck flanges
F Dimensions of seamless and welded steel pipes
G Use of metric bolting in lieu of inch bolting
H Comparison of flange descriptions in BS 1560 : Part
2 : 1970 with descriptions used in this section of
BS 1560
Tables
1 Types of steel flange
2 Synoptic table
3 Materials
4 Reducing threaded flanges Classes 150 to 2500
5 Facing dimensions for flanges other than ring-joint,
classes 150 to 2500
6 Dimensions of ring-joint facings (all Classes)
7 Surface finish for facings A, B, E, and F
8 Surface finish for facings C, D and J
9 Dimensions of Class 150 flanges
10 Dimensions of Class 300 flanges
11 Dimensions of Class 600 flanges
12 Dimensions of Class 900 flanges
13 Dimensions of Class 1500 flanges
14 Dimensions of Class 2500 flanges
15 Tolerances
16 Class 150: pressure/temperature ratings
17 Class 300: pressure/temperature ratings
18 Class 600: pressure/temperature ratings
19 Class 900: pressure/temperature ratings
20 Class 1500: pressure/temperature ratings
21 Class 2500: pressure/temperature ratings
22 Minimum fillet radius at the hub after back facing
23 Determination of studbolt lengths for lapped-type
joints
24 Bolting for flanges, Class 150 to 2500
25 Dimensions of seamless and welded steel pipe
26 Nominal bolt diameters
27 Inch/metric bolt comparisons
28 Steel flange descriptions and code numbers specified
in BS 1560 : Section 3.1 : 1989 and BS 1560 : Part 2
: 1970
Figures
1 Flange codes
2 Facings of types A to F and J
3 Reducing threaded flanges, Classes 150 to 2500
4 Flange facings, Classes 150 and 300 only, for
than lapped-type joints
5 Flange facings, Classes 600 to 2500, for other than
lapped-type joints
6 Facings for lapped-type joints
7 Dimensions of ring-joint facings (all Classes)
8 Dimensions of Class 150 flanges
9 Dimensions of Class 300 flanges
10 Dimensions of Class 600 flanges
11 Dimensions of Class 900 flanges
12 Dimensions of Class 1500 flanges
13 Dimensions of Class 2500 flanges
14 Minimum fillet radius at the hub after back facing
15 Bolting for flanges, Class 150 to Class 2500
16 Recommended bevel angles for welding
Specifies Class 150 to Class 2500 and sizes up to 24 in. Requirements facings, dimensions, tolerances, threading, bolt sizes, marking, materials for bolting and flange materials with associated pressure/temperature ratings.
| Committee |
PSE/15
|
| DevelopmentNote |
Supersedes BS 1560-2(1970), 85/78241 DC & 92/77111 DC (06/2004)
|
| DocumentType |
Standard
|
| Pages |
58
|
| PublisherName |
British Standards Institution
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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