Flange Pipes

Properties

Ductile Iron Flanged Pipes

Tensile Strength
Elongation (min) at break
Coefficient of Thermal Expansion
Modulus of Elasticity
Hardness
Density
Bending / Beam Strength
Bursting Strength (min)

 

Min. 420 MPa
Min 10%
11x10(6) per C°
1.7x1010 Kg/m²
Max. 230 BHN
7050 Kg/m³
Over 50 Kg/m³
Min. Design Factor of Safety is 2.5

 

 

    PN-10 PN-16 PN-25 PN-40
Dimensions of Flanges DN Outside Dia. Dia. of Raised Face Pitch Circle Dia.  Flange Width Outside Dia. Dia. of Raised Face Pitch Circle Dia.  Flange Width Outside Dia. Dia. of Raised Face Pitch Circle Dia.  Flange Width Outside Dia. Dia. of Raised Face Pitch Circle Dia.  Flange Width
80 200 132 160 16 200 132 160 16 200 132 160 16 200 132 160 16
100 See PN 16 Dimension 220 156 180 16 235 156 190 16 235 166 190 16
125 250 184 210 16 270 184 220 16 270 184 220 20.5
150 285 211 240 16 300 211 250 17 300 211 250 23
200 340 266 295 17 360 274 310 19 375 284 320 27
250 395 319 350 19 400 319 355 19 425 330 370 21.5 450 345 385 31.5
300 445 370 400 20.5 455 370 410 20.5 485 389 430 23.5 515 409 450 35.5
350 505 429 460 20.5 520 429 470 22.5 555 448 490 26 580 465 510 40
400 565 480 515 20.5 580 480 525 24 620 503 550 28 660 535 585 44
450 615 530 565 21 640 548 585 26 670 548 600 30.5 685 560 610 46
500 670 582 620 22.5 715 609 650 27.5 730 609 660 32.5 755 615 670 48
600 780 682 725 25 840 720 770 31 845 720 770 37 890 735 795 53
700 895 794 840 27.5 910 794 840 34.5 960 820 875 41.5  
750 960 857 900 29 970 857 900 36 1020 883 940 45
800 1015 901 950 30 1025 901 950 38 1085 928 990 46
900 1115 1001 1050 32.5 1125 1001 1050 41 1185 1028 1090 50.5
1000 1230 1112 1160 35 1255 1112 1170 45 1320 1140 1210 55

Note: All dimensions are in millimeters.


Summary of Minimum Tightening Torque for Flanged Joints   PN-10 PN-16 PN-25 PN-40
DN Bolt Size M No. of Bolts Tight Torque N.m Bolt Size M No. of Bolts Tight Torque N.m Bolt Size M No. of Bolts Tight Torque N.m Bolt Size M No. of Bolts Tight Torque N.m
80 16 8 7.8 16 8 7.8 16 8 16.6 16 8 16.6
100 16 8 11.9 16 8 11.9 20 8 20.5 20 8 31.1
125 16 8 18.5 16 8 18.5 24 8 37.9 24 8 57.4
150 20 8 32.7 20 8 32.7 24 8 54.4 24 8 82.4
200 20 8 39.4 20 12 38.6 24 12 64.3 27 12 110.6
250 20 12 40.7 24 12 71.2 27 12 113.4 30 12 188.8
300 20 12 58.4 24 12 102.2 27 16 121.9 30 16 203
350 20 16 59.4 24 16 103.8 30 16 181.7 33 16 300.2
400 24 16 91.6 27 16 153 33 16 257.1 36 16 428.3
450 24 20 92.2 27 20 154.1 33 20 258.9 36 20 431.2
500 24 20 113.7 30 20 209 33 20 319.2 39 20 580
600 27 20 185.8 33 20 327.9 36 20 504.9 45 20 950
700 27 24 209.4 33 24 369.5 39 24 620.8  
750 27 24 240.3 33 24 424.1 39 24 712.4
800 30 24 300.8 36 24 530.9 45 24 923.4
900 30 28 325.6 36 28 574.6 45 28 999.5
1000 33 28 437.8 39 28 772.6 52 28 1427.1

 
Note: All dimensions are in millimeters.

  DN PN-10 PN-16 PN-25 PN-40
  Nom. Dia. (mm) No. of Bolts Bolt Size/Total Length/Thread Length (mm) No. of Bolts Bolt Size/Total Length/Thread Length (mm) No. of Bolts Bolt Size/Total Length/Thread Length (mm) No. of Bolts Bolt Size/Total Length/Thread Length (mm)
Nuts,Bolts & Washers
for Flanged Pipes
80 4, 8 M16 x 70/38 8 M16 x 70/38 8 M16 x 70/38 8 M16 x 70/38
100 8 M16 x 70/38 8 M16 x 70/38 8 M20 x 80/46 8 M20 x 80/46
125 8 M16 x 70/38 8 M16 x 70/38 8 M24 x 80/54 8 M24 x 90/54
150 8 M20 x 80/46 8 M20 x 80/46 8 M24 x 90/54 8 M24  x 100/54
200 8 M20 x 80/46 12 M20 x 80/46 12 M24 x 90/54 12 M27 x 100/60
250 12 M20 x 80/46 12 M24 x 90/54 12 M27 x 100/60 12 M30 x 120/66
300 12 M24 x 90/46 12 M24 x 90/54 16 M27 x 100/60 16 M30 x 130/72
350 16 M24 x 90/46 16 M24 x 90/54 16 M30 x 110/66 16 M33 x 140/78
400 16 M24 X 90/54 16 M27 x 100/60 16 M33 x 120/78 16 M36 x 150/84
450 20 M24 X 90/54 20 M27 x 100/60 20 M33 x 120/78 20 M36 x 150/84
500 20 M24 X 100/54 20 M30 x 110/66 20 M33 x 120/78 20 M39 x 160/90
600 20 M27 x 100/60 20 M33 x 120/78 20 M36 x 140/84 20 M45 x 180/102
700 24 M27 x 110/60 24 M33 x 130/78 24 M39 x150/90  
750 24 M27 x 110/60 24 M33 x 130/78 24 M39 x 160/90
800 24 M30 x 120/66 24 M36 x 140/84 24 M45 x 180/102
900 28 M30 x 120/66 28 M36 x 150/84 28 M45 x 180/102
1000 28 M33 x 130/78 28 M39 x 160/103 28 M52 x 200/116


Note: All dimensions are in millimeters


Flanged Joints

Steps for jointing of flanged joints

1. Clean the flange faces to remove rust and dirt, and align pipes

2. Position the gasket. Use 3mm thick moulded rubber gaskets

3. Lubricate bolt threads, all mating surface and flanges

4. Insert the bolts one by one.

5. Tighten diametrically opposite bolts finger tight.

6. Then tighten the bolts to 100% of estimated torque before pressure testing

 

Standard & Bespoke Lengths

Electrosteel manufacture flanged pipes in diameters DN80-1200 and in lengths uti 5300mm. Standard lengths in metre intervals i.e. 1M, 2M, 3M, 4M and 5M are held in stock with PN16 flanges. Bespoke lengths upto a maximum 5300mm are manufactured to the particular customers requirement 

 

100% Product Testing

 

PN10, PN16, PN25 and PN40 available on request. PN16 being our Standard.

Standard Lengths held in stock

'Fast Flange' facility available on request.

Comprehensive range of fittings to complete the system

For support and guidance on the specification and installation of flanged joints please contact our Technical Sales Support team.

Electrosteel Castings (UK) Ltd, Ambrose Yard, Broombank Trading Estate, Broombank Road, Chesterfield, Derbyshire S41 9QJ
Copyright © 2015 Electrosteel Casting (UK) Limited