Flanges Australian Standard: AS2129—2000

Flanges Australian Standard: AS2129—2000

AS2129 flange originates from BS10 and has been metricated. In some cases slightly larger bolt holes provide better clearance as metric bolts are specified in lieu of UNC bolts used by BS10. AS4087 is an update of AS2129, however AS2129 is still widely used so it has not been deleted as a standard, however, it now only covers AS table D to H.

AS4087 flange is the latest standard for BS table D to H, the same drilling is used but the new PN pressure rating system has been adopted. As the new pressure ratings are slightly higher the flange thicknesses have slightly increased. Also the raised face dimensions (although rarely specified, flat face is mostly used) are slightly larger. Table C, J to R, no longer exist, PN16 is the same drilling as Table D, PN21 is the same as Table E, PN35 is the same as Table H.
AS4331 covers PN2.5 to PN420 and the sizing and drilling used is a replication of ISO 7005-1 which in turn is a metricated equivalent of ASME B16.5 class 150 to 2500. ISO 7005-1 also incorporates the superceded DIN 2533 & DIN 2501 flanges which AS4331 also incorporates (also mirrored in EN1092).
AS/NZS 4331 is identical with and has been reproduced from ISO 7005.

  • 4331.1 – Steel Flanges (ISO 7005-1) EN1092-2 (DIN 2501/BS4504 based) PN2.5 / 6 / 10 / 16 / 25 / 40 and ANSI 150~2500LB ISO equivalent PN 20 / 50 / 110 / 150 / 260 / 420
  • 4331.2 – Cast Iron Flanges (ISO 7005-2) PN2.5 / 6 / 10 / 19 / 20 / 25 / 40 / 50
  • 4331.3 – Copper Alloy and composite flanges (ISO 7005-3) PN10 to N50

Although the standards say they are identical, I notice some very minor flange thickness differences between ISO 7005 (AS4331) and EN1092.
AS 4331 is a reproduction of ISO 7005 which is based on the American and European flange systems. PN20, PN50, PN110, PN150, PN260 and PN420 Steel flanges are “designed to be interchangeable” with flanges to American standards ANSI/ASME B16.5 and MSS SP44. They are not identical but are “deemed to comply” with dimensions specified in ANSI/ASME B16.5 and MSS SP44 as appropriate.
ANSI based flanges covering AS 4331.1/ISO 7005-1

  • Class 150: PN20
  • Class 300: PN50
  • Class 600: PN110
  • Class 900: PN150
  • Class 1500: PN260
  • Class 2500: PN420

In Australia the BS flange and AS flange standards are essentially the same but have been metricated. Consequently metric sizes are stated as ‘DN’ (Nominal Diameter) in mm. Equivalent imperial sizing is rounded to the nearest multiple of 25mm (for 2” and over) as below. However the actual dimensions and bore sizes have not changed. ‘NB’ (Nominal Bore) is also sometimes used when referring to valve sizes.

2 1/2″ DN65
3″ DN80
4″ DN100
5″ DN125
8″ DN200
10″ DN250

The most common flanging used in Australia in oil, gas and mining is now ANSI flanging to ANSI B16.5. However in general industrial, commercial and waste/water industries AS2129 Table flanging is the most common. Increasingly European PN rated flanges are also specified in BS4504 as well as AS4331 and EN 1092-1. BS4504 is now obsolete and is replaced by EN 1092 which is listed in British Standards as BS-EN 1092. EN 1092 evolved from DIN 2501 which became part of ISO 7005, then EN 1092 was created as the standard for DIN based flanges. (BS4504 flanges were generally the same as the old DIN 2501 specification, but the new EN 1092 standard covers a wider range). EN 1092-1 is for steel flanges, EN 1092-2 is for iron flanges, EN 1092-3 is for alloy flanges, EN 1092-4 is for aluminium alloy flanges. PN stands for Nominal Pressure and roughly equates to the number of bar i.e. the cold working pressure of PN10 is 10 bar. Ratings range from PN2.5 to PN420. The latest Australian standard AS4331 references this rating system (PN2.5 to PN420). AS4331 is a reproduction of ISO 7005 which is based on the American and European flange systems PN20, PN50, PN 110, PN 150, PN 260 and PN 420 steel flanges are “designed to be interchangeable” with flanges to American standards ANSI/ASME B16.5 and MSS SP44; they are not identical but are “deemed to comply” with dimensions specified in ANSI/ASME B16.5 and MSS SP44 as appropriate. 

  • Class 150: PN 20
  • Class 300: PN 50
  • Class 600: PN 110
  • Class 900: PN 150
  • Class 1500: PN 260
  • Class 2500: PN 420 

ISO 7005 (which AS4331 is a reproduction of) also includes European DIN flanges PN6/10/16/25/40 which were previously DIN 2501-1 and BS4504.  These flanges are the same as EN1092 but EN1092 also includes higher rated DIN based flanges. Consequently in Australia most users simply just reference to original ASME B16.5 standards as this is already in use in Australia for the Oil, Gas and Mining industries and in fact in pressures above table E it has been the predominant standard in use for the last 30 years. However, piping engineers must refer to the new AS standard AS4331 for interpretations and specification requirements. Note in the case of AS4331.1/ISO 7005-1 ANSI equivalents they are not absolutely identical to ANSI but “deemed to comply and are designed to be interchangeable”.
Piping Class Ratings based on ASME B16.5 and corresponding PN rating: –

Flange Class 150 300 400 600 900 1500 2500
Flange Pressure Nominal, PN 20 50 68 100 150 250 420

PN is the rating designator followed by a designation number indicating the approximate pressure rating in bars.
PN ratings do not provide a proportional relationship between different PN numbers, whereas class numbers do.

This Standard AS 2129—2000 was prepared by the Joint Standards Australia/Standards New Zealand
Committee ME/1, Pressure Equipment Standard to supersede AS 2129—1994
.
This Standard is the result of a consensus among representatives on the Joint Committee to
produce it as an Australian Standard. Consensus means general agreement by all interested
parties. Consensus includes an attempt to remove all objections and implies much more than
the concept of a simple majority, but not necessarily unanimity. It is consistent with this
meaning that a member may be included in the Committee list and yet not be in full
agreement with all clauses of this Standard.
This Standard is derived from the British inch series flange Standard BS 10:1962, Flanges
and bolting for pipes, valves and fittings. BS 10 was made obsolescent in 1970, however, it
is still called up in British pressure equipment Standards. A 1992 survey of Australian
industry showed that flanges in accordance with AS 2129 were still in great demand. As a
result it was determined that AS 2129 should be revised and updated rather than being made
obsolescent.
It is anticipated flanges to AS 2129 will remain in use for at least 50 years, particularly for
replacement flanges. Consideration should be given to the use of alternative flanges, such as
those to AS/NZS 4331, Metallic flanges (series), BS 4504, Circular flanges for pipes valves
and fittings, (PN designated), ANSI/ASME B16.5, Pipe flanges and flanged fittings, and
AS 4087, Metallic flanges for waterworks purposes.
The main changes in this edition are as follows:
(a) Incorporation of Amendment No. 1 to the 1994 edition.
(b) Deletion of Table C which is now covered in AS 4087.
(c) Updated referenced documents.
Statements expressed in mandatory terms in notes to tables and figures are deemed to be
requirements of this Standard.
The term ‘normative’ has been used in this Standard to define the application of the
Appendices. A ‘normative’ appendix is an integral part of this Standard.

1.1 SCOPE This Standard specifies requirements for circular flanges of nominal sizes
DN 15 to DN 3000, inclusive, and their bolting for use on pipes, valves, fittings and other
pressure-retaining equipment containing fluid at pressures up to 19 300 kPa and at
temperatures in the range −200°C to +525°C.
These flanges are manufactured from carbon steel, carbon-manganese steel, alloy steel,
stainless steel, grey iron, malleable iron, ductile cast iron*, or copper alloy.
This Standard is applicable to flanges for water, steam, compressed air, chemical and
petroleum plants, hydraulic piping and where other Standards require compliance with this
Standard.
This Standard is not intended to apply to flanges for water or waste water covered by
AS 4087.
Flanges R, S and T are designated obsolescent and are not recommended for use in new
equipment. They are retained to provide for the servicing of existing equipment that is
expected to have a long working life. For new equipment, flanges R, S and T should be
replaced with flanges to AS/NZS 4331, Parts 1 to 3, ANSI B16.5 or BS 4504 (series).
The history of AS 2129 flanges (and its predecessor BS 10) and the future use of these
flanges is given in the Preface. 

1.2 OBJECTIVE The objective of this Standard is to provide guidance to manufacturers
and users on the materials, manufacturing requirements and dimensions of circular flanges
for use with existing or new equipment. 

1.3 APPLICATION

1.3.1 Flanges Flanges shall comply with the relevant requirements of this Section and
with the specific requirements of the following Sections, as appropriate:
Section 2 — Temperature/Pressure Ratings.
Section 3—Materials.
Section 4—Manufacturing Requirements and Dimensions.
Section 5—Marking and Material Certificates.
Section 6—Dimensions of Flanges.

1.3.2 Bolting Bolting for flanges shall comply with the requirements of Appendix A.

1.3.3 Assembly The assembly of flanged joints shall comply with the requirements of
Appendix B.

1.4 REFERENCED DOCUMENTS The documents referred to in this Standard are listed,
with titles, in Appendix C.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

TAB D
LENGTH THROUGH HUB
DRILLING DATA
TAB D
NOMINAL
PIPE SIZE
FLANGE 
OUTSIDE
 DIAMETER
THICKNESS
OF
FLANGE 
(Refer Note.1)
BOSSED 
SOW
WELD
 NECK
PITCH
 CIRCLE
 DIAMETER
BOLT
 HOLE
 DIAMETER
NUMBER
 OF
 BOLT 
HOLES
NOMINAL
 PIPE SIZE
MM
INCH
OD
T
L
L1
PCD
H
MM
INCH
15
1/2
95
5
15
27
67
14
4
15
1/2
20
3/4
100
5
16
27
73
14
4
20
3/4
25
1
115
5
16
27
83
14
4
25
1
32
1 1/4
120
6
17
31
87
14
4
32
1 1/4
40
1 1/2
135
6
19
35
98
14
4
40
1 1/2
50
2
150
8
21
37
114
18
4
50
2
65
2 1/2
165
8
24
40
127
18
4
65
2 1/2
80
3
185
10
26
45
146
18
4
80
3
90
3 1/2
205
10
27
45
165
18
4
90
3 1/2
100
4
215
10
29
51
178
18
4
100
4
125
5
255
13
32
57
210
18
8
125
5
150
6
280
13
32
61
235
18
8
150
6
200
8
335
13
35
64
292
18
8
200
8
225
9
370
16
41
73
324
18
8
225
9
250
10
405
16
43
80
356
22
8
250
10
300
12
455
19
48
89
406
22
12
300
12
350
14
525
22
95
470
26
12
350
14
375
15
550
22
495
26
12
375
15
400
16
580
22
521
26
12
400
16
450
18
640
25
584
26
12
450
18
500
20
705
29
641
26
16
500
20
525
21
735
29
673
26
16
525
21
550
22
760
29
699
30
16
550
22
600
24
825
32
756
30
16
600
24
700
28
910
35
845
30
20
700
28
750
30
995
41
927
33
20
750
30
800
32
1060
41
984
36
20
800
32
850
34
1090
44
1016
36
20
850
34
900
36
1175
48
1092
36
24
900
36
1000
40
1255
51
1175
36
24
1000
40
1050
42
1335
54
1251
36
28
1050
42
1200
48
1490
60
1410
36
32
1200
48
NOTES:
(1) The minimum flange thickness in carbon steel flanges will be 12mm.
(2) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(3) Flanges are generally supplied flat faced.
(4) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE E

TABLE E

LENGTH THROUGH HUB

DRILLING DATA

TABLE E

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE 
(Refer Note.1)

BOSSED 
SOW

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L

L1

PCD

H

MM

INCH

15

1/2

95

6

16

28

67

14

4

15

1/2

20

3/4

100

6

17

28

73

14

4

20

3/4

25

1

115

7

18

29

83

14

4

25

1

32

1 1/4

120

8

19

33

87

14

4

32

1 1/4

40

1 1/2

135

9

22

38

98

14

4

40

1 1/2

50

2

150

10

23

39

114

18

4

50

2

65

2 1/2

165

10

26

42

127

18

4

65

2 1/2

80

3

185

11

27

46

146

18

4

80

3

90

3 1/2

205

12

29

47

165

18

8

90

3 1/2

100

4

215

13

32

54

178

18

8

100

4

125

5

255

14

33

58

210

18

8

125

5

150

6

280

17

36

65

235

22

8

150

6

200

8

335

19

41

70

292

22

8

200

8

225

9

370

21

46

78

324

22

12

225

9

250

10

405

22

49

86

356

22

12

250

10

300

12

455

25

54

95

406

26

12

300

12

350

14

525

29

102

470

26

12

350

14

375

15

550

32

108

495

26

12

375

15

400

16

580

32

521

26

12

400

16

450

18

640

35

584

26

16

450

18

500

20

705

38

641

26

16

500

20

525

21

735

41

673

30

16

525

21

550

22

760

44

699

30

16

550

22

600

24

825

48

756

33

16

600

24

700

28

910

51

845

33

20

700

28

750

30

995

54

927

36

20

750

30

800

32

1060

54

984

36

20

800

32

850

34

1090

57

1016

36

20

850

34

900

36

1175

64

1092

36

24

900

36

1000

40

1255

67

1175

39

24

1000

40

1050

42

1335

70

1251

39

28

1050

42

1200

48

1490

79

1410

39

32

1200

48

NOTES:

(1) The minimum flange thickness in carbon steel flanges will be 12mm.
(2) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(3) Flanges are generally supplied flat faced.

(4) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE F

TABLE F

LENGTH THROUGH HUB

DRILLING DATA

TABLE F

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE 
(Refer Note.1)

BOSSED 
SOW

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L

L1

PCD

H

MM

INCH

15

1/2

95

10

20

32

67

14

4

15

1/2

20

3/4

100

10

21

32

73

14

4

20

3/4

25

1

120

10

21

39

87

18

4

25

1

32

1 1/4

135

13

24

48

98

18

4

32

1 1/4

40

1 1/2

140

13

26

48

105

18

4

40

1 1/2

50

2

165

16

29

51

127

18

4

50

2

65

2 1/2

185

16

32

54

146

18

8

65

2 1/2

80

3

205

16

32

60

165

18

8

80

3

90

3 1/2

215

19

36

63

178

18

8

90

3 1/2

100

4

230

19

38

70

191

18

8

100

4

125

5

280

22

41

79

235

22

8

125

5

150

6

305

22

41

79

260

22

12

150

6

200

8

370

25

47

92

324

22

12

200

8

225

9

405

29

54

102

356

26

12

225

9

250

10

430

29

56

102

381

26

12

250

10

300

12

490

32

61

111

438

26

16

300

12

350

14

550

35

495

30

16

350

14

375

15

580

38

521

30

16

375

15

400

16

610

41

552

30

20

400

16

450

18

675

44

610

33

20

450

18

500

20

735

51

673

33

24

500

20

525

21

760

51

699

33

24

525

21

550

22

785

54

724

33

24

550

22

600

24

850

57

781

36

24

600

24

700

28

935

60

857

36

24

700

28

750

30

1015

67

940

36

28

750

30

800

32

1060

68

984

36

28

800

32

850

34

1090

70

1016

36

32

850

34

900

36

1185

76

1105

39

32

900

36

1000

40

1275

83

1194

39

36

1000

40

1050

42

1355

86

1270

39

36

1050

42

1200

48

1530

95

1441

42

40

1200

48

NOTES:

(1) The minimum flange thickness in carbon steel flanges will be 12mm.
(2) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(3) Flanges are generally supplied flat faced.

(4) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE H

TABLE H

LENGTH THROUGH HUB

DRILLING DATA

TABLE H

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE

BOSSED 
SOW

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L

L1

PCD

H

MM

INCH

15

1/2

115

13

23

42

83

18

4

15

1/2

20

3/4

115

13

24

42

83

18

4

20

3/4

25

1

120

14

25

43

87

18

4

25

1

32

1 1/4

135

17

28

52

98

18

4

32

1 1/4

40

1 1/2

140

17

30

52

105

18

4

40

1 1/2

50

2

165

19

32

54

127

18

4

50

2

65

2 1/2

185

19

35

57

146

18

8

65

2 1/2

80

3

205

22

38

66

165

18

8

80

3

90

3 1/2

215

22

39

66

178

18

8

90

3 1/2

100

4

230

25

44

76

191

18

8

100

4

125

5

280

29

48

86

235

22

8

125

5

150

6

305

29

48

86

260

22

12

150

6

200

8

370

32

54

99

324

22

12

200

8

225

9

405

35

60

108

356

26

12

225

9

250

10

430

35

62

108

381

26

12

250

10

300

12

490

41

70

120

438

26

16

300

12

350

14

550

48

495

30

16

350

14

375

15

580

51

521

30

16

375

15

400

16

610

54

552

30

20

400

16

450

18

675

60

610

33

20

450

18

500

20

735

67

673

33

24

500

20

525

21

760

70

699

33

24

525

21

550

22

785

70

724

33

24

550

22

600

24

850

76

781

36

24

600

24

NOTES:

(1) The minimum flange thickness in carbon steel flanges will be 12mm.
(2) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(3) Flanges are generally supplied flat faced.

(4) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE J

TABLE J

LENGTH THROUGH HUB

DRILLING DATA

TABLE J

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE 
(Refer Note.3)

BOSSED 
SOW

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L

L1

PCD

H

MM

INCH

15

1/2

115

16

26

45

83

18

4

15

1/2

20

3/4

115

16

27

45

83

18

4

20

3/4

25

1

120

19

30

48

87

18

4

25

1

32

1 1/4

135

19

30

54

98

18

4

32

1 1/4

40

1 1/2

140

22

35

57

105

18

4

40

1 1/2

50

2

165

25

38

60

127

22

4

50

2

65

2 1/2

185

25

41

63

146

22

8

65

2 1/2

80

3

205

32

48

76

165

22

8

80

3

90

3 1/2

215

32

49

76

178

22

8

90

3 1/2

100

4

230

35

54

86

191

22

8

100

4

125

5

280

38

57

95

235

26

8

125

5

150

6

305

38

57

95

260

26

12

150

6

200

8

370

41

108

324

26

12

200

8

250

10

430

48

121

381

30

12

250

10

300

12

490

51

130

438

30

16

300

12

350

14

550

57

143

495

33

16

350

14

400

16

610

64

552

33

20

400

16

450

18

675

70

610

36

20

450

18

500

20

735

79

673

36

24

500

20

550

22

785

86

724

36

24

550

22

600

24

850

92

781

39

24

600

24

NOTES:

(1) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(2) Raised face is the prefered configuration.

(3) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE K

TABLE K

LENGTH THROUGH HUB

DRILLING DATA

TABLE K

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE 
(Refer Note.3)

BOSSED 
SOW

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L

L1

PCD

H

MM

INCH

15

1/2

115

19

N/A

48

83

18

4

15

1/2

20

3/4

115

19

N/A

48

83

18

4

20

3/4

25

1

125

22

N/A

57

95

18

4

25

1

32

1 1/4

135

22

N/A

57

98

18

4

32

1 1/4

40

1 1/2

150

25

N/A

60

114

22

4

40

1 1/2

50

2

165

25

N/A

60

127

18

8

50

2

65

2 1/2

185

29

N/A

67

146

22

8

65

2 1/2

80

3

205

32

N/A

76

165

22

8

80

3

90

3 1/2

230

32

N/A

76

184

26

8

90

3 1/2

100

4

240

35

N/A

86

197

26

8

100

4

125

5

280

41

N/A

98

235

26

12

125

5

150

6

305

41

N/A

98

260

26

12

150

6

200

8

370

48

N/A

115

318

30

12

200

8

250

10

430

51

N/A

124

381

30

16

250

10

300

12

490

57

N/A

140

432

33

16

300

12

350

14

570

67

N/A

67

508

36

16

350

14

400

16

630

76

N/A

565

36

20

400

16

450

18

720

89

N/A

200

654

39

20

450

18

500

20

785

98

N/A

215

711

42

20

500

20

550

22

870

105

N/A

222

781

55

20

550

22

NOTES:

(1) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(2) Raised face availabe only.

(3) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE R

TABLE R

LTB

DRILLING DATA

TABLE R

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L1

PCD

H

MM

INCH

15

1/2

115

19

48

83

18

4

15

1/2

20

3/4

115

19

48

83

18

4

20

3/4

25

1

125

22

57

95

18

4

25

1

32

1 1/4

135

22

57

98

18

4

32

1 1/4

40

1 1/2

150

25

60

114

22

4

40

1 1/2

50

2

165

25

60

127

18

8

50

2

65

2 1/2

185

29

67

146

22

8

65

2 1/2

80

3

205

32

76

165

22

8

80

3

90

3 1/2

230

32

76

184

26

8

90

3 1/2

100

4

240

35

86

197

26

8

100

4

125

5

280

41

98

235

26

12

125

5

150

6

305

44

111

260

26

12

150

6

200

8

370

51

124

324

30

12

200

8

250

10

430

60

152

387

30

16

250

10

300

12

510

70

172

457

33

16

300

12

350

14

585

79

193

527

36

16

350

14

400

16

640

89

216

584

36

20

400

16

450

18

735

98

235

673

39

20

450

18

500

20

805

105

242

730

42

20

500

20

550

22

895

114

257

806

55

20

550

22

NOTES:

(1) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(2) Raised face availabe only.

(3) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE S

TABLE S

LTB

DRILLING DATA

TABLE S

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L1

PCD

H

MM

INCH

15

1/2

125

22

60

89

22

4

15

1/2

20

3/4

125

22

60

89

22

4

20

3/4

25

1

140

25

69

102

22

4

25

1

32

1 1/4

145

29

77

108

22

4

32

1 1/4

40

1 1/2

160

29

80

121

22

4

40

1 1/2

50

2

170

32

83

133

22

8

50

2

65

2 1/2

185

32

86

146

22

8

65

2 1/2

80

3

205

35

89

165

26

8

80

3

90

3 1/2

235

38

92

191

26

8

90

3 1/2

100

4

250

41

101

203

30

8

100

4

125

5

285

44

104

235

26

12

125

5

150

6

325

51

127

273

30

12

150

6

200

8

415

64

150

356

36

12

200

8

250

10

485

79

190

425

36

16

250

10

300

12

580

92

219

508

42

16

300

12

350

14

650

105

248

578

42

20

350

14

400

16

745

117

276

660

48

20

400

16

NOTES:

(1) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(2) Raised face availabe only.

(3) For special requirement, please make a enquiry here now.

20180925052054 52628 - Flanges Australian Standard: AS2129—2000

AS 2129:2000 TABLE T

TABLE T

LTB

DRILLING DATA

TABLE T

NOMINAL
PIPE SIZE

FLANGE 
OUTSIDE
 DIAMETER

THICKNESS
OF
FLANGE

WELD
 NECK

PITCH
 CIRCLE
DIAMETER

BOLT
 HOLE
DIAMETER

NUMBER
 OF
 BOLT 
HOLES

NOMINAL
 PIPE SIZE

MM

INCH

OD

T

L1

PCD

H

MM

INCH

15

1/2

140

25

63

102

22

4

15

1/2

20

3/4

140

25

63

102

22

4

20

3/4

25

1

145

29

73

108

22

4

25

1

32

1 1/4

160

32

80

121

26

4

32

1 1/4

40

1 1/2

170

35

86

133

22

8

40

1 1/2

50

2

185

35

89

146

22

8

50

2

65

2 1/2

205

41

101

165

26

8

65

2 1/2

80

3

235

48

108

191

30

8

80

3

90

3 1/2

265

54

124

216

33

8

90

3 1/2

100

4

285

57

133

235

33

8

100

4

125

5

325

67

159

273

33

12

125

5

150

6

375

73

175

318

36

12

150

6

200

8

475

89

203

406

42

12

200

8

250

10

560

108

254

489

42

16

250

10

300

12

655

121

292

572

48

16

300

12

NOTES:

(1) Bore sizes to suit ASME B 36.10B36.19 pipe unless otherwise specified.
(2) Raised face availabe only.

(3) For special requirement, please make a enquiry here now.

20180925052830 97931 - Flanges Australian Standard: AS2129—2000

AS 4087:2004 PN16

PN16

FLANGE THICKNESS

DRILLING DATA

PN16

NOMINAL 
PIPE SIZE

FLANGE
OUTSIDE
DIAMETER

THICKNESS
OF 
FLANGE

PITCH
CIRCLE
DIAMETER

BOLT
HOLE
DIAMETER

NUMBER
OF
BOLT
HOLES

NOMINAL 
PIPE SIZE

MM

INCH

OD

T

PCD

H

#

MM

INCH

50

2

150

11

114

18

4

50

2

65

2  1/2

165

11

127

18

4

65

2  1/2

80

3

185

11

146

18

4

80

3

100

4

215

13

178

18

4

100

4

150

6

280

13

235

18

8

150

6

200

8

335

19

292

18

8

200

8

225

9

370

19

324

18

8

225

9

250

10

405

19

356

22

8

250

10

300

12

455

23

406

22

12

300

12

350

14

525

30

470

26

12

350

14

375

15

550

30

495

26

12

375

15

400

16

580

30

521

26

12

400

16

450

18

640

30

584

26

12

450

18

500

20

705

38

641

26

16

500

20

600

24

825

48

756

30

16

600

24

700

28

910

56

845

30

20

700

28

750

30

995

56

927

33

20

750

30

800

32

1060

56

984

36

20

800

32

900

36

1175

66

1092

36

24

900

36

1000

40

1255

66

1175

36

24

1000

40

1200

48

1490

76

1410

36

32

1200

48

Notes:

(1)Flat face and Raised face or “O” ring groove also available.

(2) For special design, pls make an enquiry here

20180925052830 97931 - Flanges Australian Standard: AS2129—2000

AS 4087:2004 PN 21

PN21

FLANGE THICKNESS

DRILLING DATA

PN21

NOMINAL 
PIPE SIZE

FLANGE
OUTSIDE
DIAMETER

THICKNESS
OF 
FLANGE

PITCH
CIRCLE
DIAMETER

BOLT
HOLE
DIAMETER

NUMBER
OF
BOLT
HOLES

NOMINAL 
PIPE SIZE

MM

INCH

OD

T

PCD

H

#

MM

INCH

50

2

165

15

127

18

4

50

2

65

2  1/2

185

15

146

18

8

65

2  1/2

80

3

205

15

165

18

8

80

3

100

4

230

19

191

18

8

100

4

150

6

305

24

260

22

12

150

6

200

8

370

24

324

22

12

200

8

225

9

405

30

356

26

12

225

9

250

10

430

30

381

26

12

250

10

300

12

490

30

438

26

16

300

12

350

14

550

30

495

30

16

350

14

375

15

580

38

521

30

16

375

15

400

16

610

38

552

30

20

400

16

450

18

675

38

610

33

20

450

18

500

20

735

48

673

33

24

500

20

600

24

850

58

781

36

24

600

24

700

28

935

58

857

36

24

700

28

750

30

1015

58

940

36

28

750

30

800

32

1060

68

984

36

28

800

32

900

36

1185

68

1105

39

32

900

36

1000

40

1275

78

1194

39

36

1000

40

1200

48

1530

88

1441

42

40

1200

48

Notes:

(1)Flat face and Raised face or “O” ring groove also available.

(2) For special design, pls make an enquiry here.

20180925052830 97931 - Flanges Australian Standard: AS2129—2000

AS 4087:2004 PN 35

PN35

FLANGE THICKNESS

DRILLING DATA

PN35

NOMINAL 
PIPE SIZE

FLANGE
OUTSIDE
DIAMETER

THICKNESS
OF 
FLANGE

PITCH
CIRCLE
DIAMETER

BOLT
HOLE
DIAMETER

NUMBER
OF
BOLT
HOLES

NOMINAL 
PIPE SIZE

MM

INCH

OD

T

PCD

H

#

MM

INCH

50

2

165

19

127

18

4

50

2

65

2  1/2

185

19

146

18

8

65

2  1/2

80

3

205

24

165

18

8

80

3

100

4

230

24

191

18

8

100

4

150

6

305

31

260

22

12

150

6

200

8

370

31

324

22

12

200

8

225

9

405

38

356

26

12

225

9

250

10

430

38

381

26

12

250

10

300

12

490

38

438

26

16

300

12

350

14

550

48

495

30

16

350

14

375

15

580

48

521

30

16

375

15

400

16

610

48

552

30

20

400

16

450

18

675

58

610

33

20

450

18

500

20

735

58

673

33

24

500

20

600

24

850

68

781

36

24

600

24

700

28

935

78

857

36

24

700

28

750

30

1015

78

940

36

28

750

30

800

32

1060

84

984

36

28

800

32

900

36

1185

94

1105

39

32

900

36

1000

40

1275

98

1194

39

36

1000

40

1200

48

1530

108

1441

42

40

1200

48

Notes:

(1)Flat face and Raised face or “O” ring groove also available.

(2) For special design, pls make an enquiry here.

Source: China Flanges Manufacturer – Yaang Pipe Industry (www.steeljrv.com)

(Yaang Pipe Industry is a leading manufacturer and supplier of nickel alloy and stainless steel products, including Super Duplex Stainless Steel Flanges, Stainless Steel Flanges, Stainless Steel Pipe Fittings, Stainless Steel Pipe. Yaang products are widely used in Shipbuilding, Nuclear power, Marine engineering, Petroleum, Chemical, Mining, Sewage treatment, Natural gas and Pressure vessels and other industries.)

If you want to have more information about the article or you want to share your opinion with us, contact us at sales@steeljrv.com
Please notice that you might be interested in the other technical articles we’ve published:
  • Applications of Flanges

  • How to get high quality flanges
  • How to get high quality Welding Neck Flanges

  • How to get high quality Threaded Flanges

  • How to get high quality Spectacle Blind Flanges

  • How to get high quality spacer rings and spade flanges

  • How to get high quality socket welding flanges
  • How to get high quality slip on flanges

  • How to get high quality ring type joint flanges

  • How to get high quality plate flanges

  • How to get high quality lap joint flanges

  • How to get high quality orifice flanges
  • How to get high quality blind flanges

  • How to get high quality Threaded Flanges

  • How to get high quality Spectacle Blind Flanges

  • How to get high quality spacer rings and spade flanges

  • How to get high quality alloy flanges

  • HOW TO GET HIGH QUALITY EXPANDER FLANGES

  • HOW TO GET HIGH QUALITY LONG WELD NECK FLANGES

  • How to get high quality Weldoflange or Nipoflange

  • How to get high quality reducing flange

  • How to get high quality alloy flanges

  • How to get high quality Carbon Steel Flanges

  • How to calculate blind flange thickness

Reference:

  • https://www.saiglobal.com
  • https://www.yaang.com
  • http://globalsupplyline.com.au

Related News

العربيةБългарски简体中文繁體中文DanskNederlandsEnglishFrançaisDeutschBahasa IndonesiaItaliano日本語한국어LatinPortuguêsРусскийEspañolதமிழ்ไทยTürkçe