Products

MATERIAL COMPOSITION FOR CAST MATERIAL
CARBON STEEL ALLOY STEEL
ASTM Designation &
Grade Identifcation
A216
WCB
A352
LCB
A252
LCC
A217
WC6
A217
WC9
A217
CA15
Elements % by weight
Carbon 0.30 $ 0.30 $ 0.25 0.05-0.20 0.05-0.18 0.15
Manganese 1.00 1.00 1.20 0.50 - 0.80 0.40 - 0.70 1.00
Phosphorus 0.04 0.04 0.04 0.04 0.04 0.040
Sulphur 0.045 0.045 0.045 0.045 0.045 0.040
Silicon 0.60 0.60 0.60 0.60 0.60 1.50
Copper 0.30 * 0.30 * 0.30 * 0.50 * 0.50 *  
Nickel 0.50 * 0.50 * 0.50 * 0.50 * 0.50 * 1.00
Chromium 0.50 * 0.50 * 0.50 * 1.00 - 1.50 2.00 - 2.75 11.5 - 14.0
Molybdenum 0.20 * 0.20 * 0.20 * 0.45 - 0.65 0.90 - 1.20 0.50
Vanadium 0.03 * 0.03 * 0.03 *      
Tungsten       0.10 * 0.10 *  
* These are residual elements, total content of these shall not exceed 1%. $ Standard at AIL is 0.25 Max.
Values indicated are maximum except when range is given.
Material ASTM
A194
Gr. B7
ASTM
A320
Gr. L7
ASTM
A194
Gr. 2H
ASTM
A194
Gr. 7
Hardfacing
Stellite 6
ASTM
A182
Gr. F6A
ASTM
A276
Type 316
Elements
Carbon 0.37 - 0.49 0.38 - 0.48 0.40 min 0.37 - 0.49 0.90 - 1.40 0.150 0.80
Manganese 0.65 - 1.10 0.75 - 1.00 1.00 0.65 - 1.10 1.00 1.000 2.000
Phosphorus 0.350 0.035 0.040 0.040   0.040 0.045
Sulphur 0.040 0.040 0.050 0.040   0.030 0.030
Silicon 0.15 - 0.35 0.15 - 0.35 0.40 0.15 - 0.35 2.00 1.000 1.000
Chromium 0.75 - 1.20 0.80 - 1.10   0.75 - 1.20 26.0 - 32.0 11.5 - 13.5 16.0 - 18.0
Molybdenum 0.15 - 0.25 0.15 - 0.25   0.15 - 0.25 1.00   2.0 - 3.0
Nickel         3.00 0.50 10.0 - 14.0
Cobalt         balance    
Tungsten         3.0 - 6.0    
Iron         3.00    
Nitrogen              
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.        
½ " DN15 6" DN150
¾" DN20 8" DN200
1" DN25 10" DN250
1¼" DN32 12" DN300
1½" DN40 14" DN350
2" DN50 15" DN375
2½" 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.
PIPE FLANGE DIMENSIONS
ASME B16.5 - 1996
CLASS 150 STEEL PIPE FLANGE DIMENSIONS :
RAISED FACE
Nominal size A ø B ø C ø D E ø Bolt  
in mm in mm in mm in mm in mm in mm Number Dia
2 50 6.00 152 4.76 120 3.62 92 0.75 (0.62) 19.1 (15.9) 0.75 19 4 5/8
2.1/2 65 7.00 178 5.50 139 4.12 105 0.88 (0.69) 22.3 (17.5) 0.75 19 4 5/8
3 80 7.50 190 6.00 152 5.00 127 0.94 (0.75) 23.9 (19.1) 0.75 19 4 5/8
4 100 9.00 229 7.50 190 6.19 157 0.94 23.9 0.75 19 8 5/8
5 125 10.00 254 8.50 216 7.31 186 0.94 23.9 0.88 22 8 3/4
6 150 11.00 279 9.50 241 8.50 216 1.00 25.4 0.88 22 8 3/4
8 200 13.50 343 11.75 298 10.62 270 1.12 28.6 0.88 22 8 3/4
10 250 16.00 406 14.25 362 12.75 324 1.19 30.2 1.00 25 12 7/8
12 300 19.00 483 17.00 432 15.00 381 1.25 31.8 1.00 25 12 7/8
14 350 21.00 533 18.75 476 16.25 413 1.38 35.0 1.12 29 12 1
16 400 23.50 597 21.25 539 18.50 470 1.44 36.6 1.12 29 16 1
18 450 25.00 635 22.75 578 21.00 533 1.56 39.7 1.25 32 16 1.1/8
20 500 27.50 698 25.00 635 23.00 584 1.69 42.9 1.25 32 20 1.1/8
24 600 32.00 813 29.50 749 27.25 692 1.88 47.7 1.38 35 20 1.1/4
Height of raised face is 0.06" (1.6 mm) each. Dimensions in ( ) are for intergral valve flanges.
CLASS 300 STEEL PIPE FLANGE DIMENSIONS : RAISED FACE
Nominal size A ø B ø C ø D E ø Bolt  
in mm in mm in mm in mm in mm in mm Number Dia
2 50 6.50 165 5.00 127 3.62 92 0.88 22.3 0.75 19 8 5/8
2.1/2 65 7.50 190 5.88 149 4.12 105 1.00 25.4 0.88 22 8 3/4
3 80 8.25 210 6.62 168 5.00 127 1.12 28.6 0.88 22 8 3/4
4 100 10.00 254 7.88 200 6.19 157 1.25 31.8 0.88 22 8 3/4
5 125 11.00 279 9.25 235 7.31 186 1.38 35.0 0.88 22 8 3/4
6 150 12.50 318 10.62 270 8.50 216 1.44 36.6 0.88 22 12 3/4
8 200 15.00 381 13.00 330 10.62 270 1.62 41.3 1.00 25 12 7/8
10 250 17.50 444 15.25 387 12.75 324 1.88 47.7 1.12 29 16 1
12 300 20.50 521 17.75 451 15.00 381 2.00 50.8 1.25 32 16 1.1/8
14 350 23.00 584 20.25 514 16.25 413 2.12 54.0 1.25 32 20 1.1/8
16 400 25.50 648 22.50 571 18.50 470 2.25 57.2 1.38 35 20 1.1/4
18 450 28.00 711 24.75 628 21.00 533 2.38 60.4 1.38 35 24 1.1/4
20 500 30.50 775 27.00 686 23.00 584 2.50 63.5 1.38 35 24 1.1/4
24 600 36.00 914 32.00 813 27.25 692 2.75 69.9 1.62 41 24 1.1/2
Height of raised face is 0.06" (1.6 mm) each.
CLASS 600 STEEL PIPE FLANGE DIMENSIONS : RAISED FACE
Nominal size A ø B ø C ø D E ø Bolt  
in mm in mm in mm in mm in mm in mm Number Dia
2 50 6.50 165 5.00 127 3.62 92 1.00 25.4 0.75 19 8 5/8
2.1/2 65 7.50 190 5.88 149 4.12 105 1.12 28.6 0.88 22 8 3/4
3 80 8.25 210 6.62 168 5.00 127 1.25 31.8 0.88 22 8 3/4
4 100 10.75 273 8.50 216 6.19 157 1.50 38.1 1.00 25 8 7/8
5 125 13.00 330 10.50 266 7.31 186 1.75 44.5 1.12 29 8 1
6 150 14.00 356 11.50 292 8.50 216 1.88 47.7 1.12 29 12 1
8 200 16.50 419 13.75 349 10.62 270 2.19 55.6 1.25 32 12 1.1/8
10 250 20.00 508 17.00 432 12.75 324 2.50 63.5 1.38 35 16 1.1/4
12 300 22.00 559 19.25 489 15.00 381 2.62 66.7 1.38 35 20 1.1/4
14 350 23.75 603 20.75 527 16.25 413 2.75 69.9 1.50 38 20 1.3/8
16 400 27.00 686 23.75 603 18.50 470 3.00 76.2 1.62 41 20 1.1/2
18 450 29.25 743 25.75 654 21.00 533 3.25 82.6 1.75 45 20 1.5/8
20 500 32.00 813 28.50 724 23.00 584 3.50 88.9 1.75 45 24 1.5/8
24 600 37.00 940 33.00 838 27.25 692 4.00 102.0 2.00 51 24 1.7/8
Height of raised face is 0.25" (6.4 mm) each.
CLASS 600 PIPE FLANGE DIMENSIONS : RING TYPE
Valve Size A ø B ø C ø D groove
number
pitch
dia -P
depth
E
width
F
radius
at bottom R
2 6.50 5.00 4.25 1.00 R23 3.250 0.312 0.469 0.03
2.5 7.50 5.88 5.00 1.12 R26 4.000 0.312 0.469 0.03
3 8.25 6.62 5.75 1.25 R31 4.875 0.312 0.469 0.03
4 10.75 8.50 6.75 1.50 R37 5.875 0.25 0.469 0.03
5 13.00 10.50 8.25 1.75 R41 7.125 0.312 0.469 0.03
6 14.00 11.50 9.50 1.88 R45 8.312 0.312 0.469 0.03
8 16.50 13.75 11.88 2.19 R49 10.625 0.312 0.469 0.03
10 20.00 17.00 14.00 2.50 R53 12.750 0.312 0.469 0.03
12 22.00 19.25 16.25 2.62 R57 15.000 0.312 0.469 0.03
14 23.75 20.75 18.00 2.75 R61 16.500 0.312 0.469 0.03
16 27.00 23.75 20.00 3.00 R65 18.500 0.312 0.469 0.03
18 29.25 25.75 22.62 3.25 R69 21.000 0.312 0.469 0.03
20 32.00 28.50 25.00 3.50 R73 23.000 0.375 0.531 0.06
24 37.00 33.00 29.50 4.00 R77 27.250 0.438 0.656 0.06
* No. of bolts and bolt dia are same as in C1 600 Raised face.
>