Phone 06 348 8172

Fax 06 348 8173

Email delvin@delvin.co.nz

238 Taupo Quay

P.O.Box 142

Wanganui, New Zealand

Size

Table

Flange

 Diameter

PCD

Bolts

Bolt

Size

Hole Size

Thickness

Grey Cast Iron

Copper Alloy

 Cast / Forged Steel

ANSI 125/150

32" / 813mm29 1/2" / 749mm201 1/4"1 3/8" / 35mm1 7/8" / 48mm 1 7/8" / 48mm

ANSI 300

36" / 914mm32" / 813mm241 1/2"1 5/8" / 41mm  2 3/4" / 70mm

ANSI 600

37" / 940mm33" / 838mm241 7/8"2" / 51mm  4" / 102mm

ANSI 900

41" / 1041mm34" / 864mm202 1/2"2 5/8" / 67mm  5 1/2" / 140mm

ANSI 1500

46" / 1168mm39" / 991mm163 1/2"3 5/8" / 92mm  8" / 203mm

AS2129 Table C

825mm756mm1625mm30mm41mm41mm35mm

AS2129 Table D

825mm756mm1625mm30mm35mm35mm35mm

AS2129 Table E

825mm756mm1629mm33mm41mm38mm38mm

AS2129 Table F

850mm781mm2432mm36mm44mm41mm41mm

AS2129 Table H

850mm781mm2432mm36mm64mm57mm57mm

AS2129 Table J

850mm781mm2435mm39mm  70mm

BS10 Table D

32 1/2" / 826mm29 3/4" / 756mm161"1 1/8" / 29mm1 3/8" / 35mm1 3/8" / 35mm1 3/8" / 35mm

BS10 Table E

32 1/2" / 826mm29 3/4" / 756mm161 1/8"1 1/4" / 32mm1 5/8" / 41mm1 1/2" / 38mm1 1/2" / 38mm

BS10 Table F

33 1/2" / 851mm30 3/4" / 781mm241 1/4"1 3/8" / 35mm1 3/4" / 44mm1 5/8" / 41mm1 5/8" / 41mm

BS10 Table H

33 1/2" / 851mm30 3/4" / 781mm241 1/4"1 3/8" / 35mm2 1/2" / 64mm2 1/4" / 57mm2 1/4" / 57mm

BS10 Table J

33 1/2" / 851mm30 3/4" / 781mm241 3/8"1 1/2" / 38mm  2 3/4" / 70mm

BS4504-6

755mm705mm20M2426mm30mm  

BS4504-10

780mm725mm20M2730mm36mm  

BS4504-16

840mm770mm20M3336mm48mm 40mm

BS4504-25

845mm770mm20M3639mm  46mm

BS4504-40

890mm795mm20M4548mm  60mm

BS4504-64

930mm820mm20M5256mm  76mm

BS4504-100

990mm875mm20M5662mm  104mm

 

Notes:

What is DN?

DN stands for 'Diameter Nominale'.

Put simply, it is a rough translation of mm from imperial sizes, assuming that an inch is 25mm.

We refer to a 12" flange as DN300, when in fact it is 304mm.

"DN15 6"DN150
"DN20 8"DN200
1"DN25 10"DN250
1"DN32 12"DN300
1" DN40 14"DN350
2"DN50 15"DN375
2"DN65 16"DN400
3"DN80 18"DN450
4"DN100 20"DN500
5"DN125 24"DN600

What is the PCD?

The PCD of a flange is one of the critical dimensions.

PCD (Pitch Circle Diameter) is the diameter of a circle that goes through each of the bolt holes.

 

There are several standards for flanges, and we deal with four of them;

British Standard - BS10

Table D

Table E

Table F

Table G

Table H

Table J

Table K

 

Table E is the most popular for applications with water.

All dimensions are specified in inches.

Australian Standard - AS2129

Table C

Table D

Table E

Table F

Table G

Table H

Table J

 

These flanges are equivalent to the BS10 flanges, except that all dimensions are specified in mm.

In some sizes, bolt holes are slightly larger to give better clearance.

American National Standards Institute (ANSI)

ANSI 125

ANSI 150

ANSI 300

ANSI 600

ANSI 900

ANSI 1500

 

Higher numbers denote higher pressures.

Sometimes people use the word 'Class' instead of ANSI. e.g. an ANSI 150 flange might be called a 'Class 150'

All dimensions are specified in inches.

British Standard - BS4504

BS4504-6

BS4504-10

BS4504-16

BS4504-25

BS4504-40

BS4504-64

BS4504-100

PN6

PN10

PN16

PN25

PN40

PN64

PN100

Engineers use the prefix PN (Pressure Nominale). e.g. a BA4504-16 flange will commonly be referred to as a PN16

Generally, a PN16 flange is designed to withstand pressures up to 16 bar.

All dimensions are specified in mm.