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Ductile Iron FLange Pipe


Cast Iron Flange Pipe


With Truform's expertise and experience in screwing technology, the CI Flanges are tightened I Screwed fit on either side of C.I. Spun pipes by machines. The pipes are internally & externally coated with Bitumen paint. The flanges are generally supplied with flat face, however if required raised flanges may also be supplied. The flanges are genera), drilled as per IS:1536 & IS:1538.


Range:

  • Size 80 mm to 100D mm.
  • Length : up to 5. Sm. available in mix lengths and std lengths of 2. 7 5, 3, 3.5, 4, 4.5, 5, 5.25 & 5.5m.
Application :
  • Water Supply - Overhead Water Tanks. Pumping stations, Underground Mains. River Crossing, Hill Tracks. Sandy area, etc.
  • Vertical Pipe Lines for overhead Tanks! Elevated Service Reservoirs (ESR's).
  • Treatment Plants-Portable Water. Effluent and Waste Treatment.
  • For Laying in HiIIy Areas Slopes, even exceeding the Angle of Repose.
  • Fire Fighting Systems
  • Disengagement Requirements:
    • Application where pipelines are disengaged I dismantled for cleaning like in treatment plants for water. Effluent. Sewage and pump houses.
    • Temporary installations, applications where pipelines are transferred. from one location to other: require Flange Pipes like temporary pipelines required for De-Watering mines or heavily inundated areas.
  • Over Ground and & Exposed Installation. Flanged Pipes are most suitable for over ground pipelines like portions of Pipelines on Pillars /Pedestals for Rivers d Canal or Road crossing and bridges.
  • Ash Disposal in Power Plants.
  • Sand Stowing operations in Mines.
  • Cast Iron Double Flanged Pipes are widely used in Soda ASh Plants. Fertilizer Plants, SulphuricAcid Plants.
  • Sugar Industries for Spray pond, SO, piping & Injection Piping.
  • Chemicals Industry application for cooler pipes for conducting various chemical fluids like Sulphuric Acid, Brines. Alkalies, etc.


Technical specifications as per IS:1536 :


Mechanical Properties
Ring test 80 to 300 DN Modulus of rupture 390 ( Min: ) MPa
Tensile test 350 to 600 DN Tensile strength 200, (Min:) MPa
Brinell Hardness Test Max. 230 BHN

Hydrostatic Test Pressure at works (MPa) :


Size DN (mm) Test Pressure
80-300 2.5
350-600 1.6
700-1000 1.6

Advantages of Screwed flange pipes over Sand Casted pipes :


  • In the manufacturing of these pipes, centrifugally casted barrel pipe is used which has a dense and homogeneous structure with superior wear resistant qualities resulting in longer life of pipes. This has been proved beyond all doubts by a study conducted by IISCO (A Govt. of India Enterprise), that the life of 150 mm dia class `B' Screwed Flange pipe is higher by 13% over sand casted pipe.
  • Sand Cast pipes are available in length of 9 ft. (2.75 mtrs) whereas our Screwed Flange pipes are available in any lengths upto 5.5 mtrs. Longer lengths (100% longer means 50% of Flange joints and fast laying of pipe. This results in saving of jointing and laying cost.
  • 150 mm dia Screwed Flange pipe is lighter than the sand casted pipe, which means ease of handling, while raising and fixing the pipe for overhead tanks.
  • Mechanical Properties: The centrifugal casting process imparts to the screwed pipe barrel uniform sectional thickness, higher strength, high resistance to bursting and transverse stresses and ensures freedom from blow holes and homogeneity of structure.
  • Being machined on sophisticated machines, highest quality of pipe is ensured. Before tightening of flanges on the barrel a suitable epoxy resin is applied on the threads ensuring leak proof joints.
  • More over the centrifugally casted barrel of these pipes have smooth inner surface and hence frictional losses are minimum resulting in more discharge over the same size of sand casted pipe, whose inner surface is much more rough. This results in lower pumping costs.
  • We can supply the pipe in sets of desired length for a particular height of ESR.

Flanged Pipe Centrifugally Cast with Screwed Flange - Class LA :


DN DE e Mass for one Metre Mass for One Flange Total Mass for One Working Length L in kg
mm mm mm kg kg 2.75 m 3 m 4 m 4.5 m 5 m 5.25 m 5.5 m
1 2 3 4 5 6 7 8 9 10 11 12
80 98 7.2 14.7 4.3 49 60 78 86 95 99 104
100 118 7.5 18.6 5 61 76 98 109 120 126 131
125 144 7.9 24.2 6.6 80 99 128 142 157 164 171
150 170 8.3 30.1 8.2 99 124 160 178 196 205 214
200 222 9.2 44 11.4 144 179 231 257 283 296 309
250 274 10 59.3 14.7 192 241 312 347 382 405 418
300 376 10.8 76.5 18.6 248 311 403 448 484 517 540
350 378 11.7 96.3 21.2 307 386 500 558 615 644 672
400 429 12.5 116.9 27.3 376 473 613 682 752 787 822
450 480 13.3 141 32.6 453 572 741 823 910 952 983
500 532 14.2 165.2 38.1 531 666 863 961 1060 1109 1158
600 635 15.8 219.8 52.4 709 893.5 1156 1288 1419 1485 1551
700 738 17.5 283.2 71.9 923 1158 1495 1666 1835 1919 2004
750 790 18.3 317.2 84.4 1041 1311 1691 1882 2072 2167 2262
800 842 19.2 354.9 96.9 1170 1463 1886 2098 2309 2415 2521
900 945 20.8 431.8 113.5 1414 1777 2293 2552 2810 2939 3068
1000 1048 22.5 518.3 134 1693 2126 2745 3054 3364 3519 3674
1050 1124 23.6 583.4 169.9 1944 2480 3193 3550 3906 4085 4263

Flanged Pipe Centrifugally Cast with Screwed Flange - Class A :


DN DE e Mass for one Metre Mass for One Flange Total Mass for One Working Length L in kg
mm mm mm kg kg 2.75 m 3 m 4 m 4.5 m 5 m 5.25 m 5.5 m
1 2 3 4 5 6 7 8 9 10 11 12
80 98 7.9 16 4.3 53 60 78 86 95 99 104
100 118 8.3 20.5 5 66 76 98 109 120 126 131
125 144 8.7 26.4 6.6 86 99 128 142 157 164 171
150 170 9.2 33.2 8.2 108 124 160 178 196 205 214
200 222 10.1 48.1 11.4 155 179 231 257 283 296 309
250 274 11 65 14.7 208 241 312 347 382 405 418
300 326 11.9 84 18.6 248 311 403 448 484 517 540
350 378 12.8 105 21.2 331 386 500 558 615 644 672
400 429 13.8 128.7 27.3 409 473 613 682 752 787 822
450 480 14.7 156 32.6 494 572 741 823 910 952 983
500 532 15.6 181 38.1 574 666 863 961 1060 1109 1158
600 635 17.4 241.4 52.4 769 893.5 1156 1288 1419 1485 1551
700 738 19.3 311.6 71.9 1001 1158 1497 1666 1835 1919 2004
750 790 20.2 348.9 84.4 1128 1311 1691 1882 2072 2167 2262
800 842 21.1 389.1 96.9 1264 1463 1886 2098 2309 2415 2521
900 945 22.9 474.3 113.5 1231 1777 2293 2552 2810 2939 3068
1000 1048 24.8 570 134 1836 2126 2745 3054 3364 3519 3674
1050 1124 26 641.2 169.9 2103 2480 3193 3550 3906 4085 4263

Flanged Pipe Centrifugally Cast with Screwed Flange - Class B


DN DE e Mass for one Metre Mass for One Flange Total Mass for One Working Length L in kg
mm mm mm kg kg 2.75 m 3 m 4 m 4.5 m 5 m 5.25 m 5.5 m
1 2 3 4 5 6 7 8 9 10 11 12
80 98 8.6 17.3 4.3 56 60 78 86 95 99 104
100 118 9 22 5 70 76 98 109 120 126 131
125 144 9.5 28.7 6.6 92 99 128 142 157 164 171
150 170 10 35.9 8.2 115 124 160 178 196 205 214
200 222 11 52.1 11.4 166 179 231 257 283 296 309
250 274 12 70.6 14.7 224 241 312 347 382 405 418
300 326 13 91.4 18.6 289 311 403 448 484 517 540
350 378 14 114.5 21.2 357 386 500 558 615 644 672
400 429 15 139.5 27.3 438 473 613 682 752 787 822
450 480 16 169 32.6 530 572 741 823 910 952 983
500 532 17 196.7 38.1 617 666 863 961 1060 1109 1158
600 635 19 262.9 52.4 828 893.5 1156 1288 1419 1485 1551
700 738 21 338.2 71.9 1074 1158 1497 1666 1835 1919 2004
750 790 22 380.6 84.4 1216 1311 1691 1882 2072 2167 2262
800 842 23 432.1 96.9 1357 1463 1886 2098 2309 2415 2521
900 945 25 516.6 113.5 1645 1777 2293 2552 2810 2939 3068
1000 1048 27 619.2 134 1971 2126 2745 3054 3364 3519 3674
1050 1124 29 713.3 169.9 2301 2480 3193 3550 3906 4085 4263

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