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Page 3,Flange Identification, Page 3,Flange Type Codes. Page 4,Flange Face Types, Page 4,DN Explanation, Page 4. Flange PCD, Page 4,Pressure Rating, Page 5,Gasket Materials. Flange Tables for the Heating and,Ventilating Industry. Page 7, BS10 and BS1560 ANSI B16 5 , Temperature Pressure Ratings Page 8.
BS4504 Page 9, Approx Bolting Torque Page 10, Page 11. CESWI 7 Compliance, Page 12,Bolt Flange and Coupling Coatings. Flange Tables Bolt Sizing and Gasket Materials, There are many different standards relating to the sizing and specification of. flange bolt sets world wide common ones include ASA ANSI ASME USA PN . DIN EU BS10 BS4504 British and JIS KS Japanese Korean . The British standards relate to metric sizing in the case of BS 4504 and imperial sizing for BS10 . The American standard ANSI is also used in Britain . Flange Identification ,BS4504 111 B PN16 DN400 B4 XXXX 654321. Casting Number, Manufacturer, Material Designation.
Nominal Diameter, Nominal Pressure, Flange Face Type. Flange Code Number, British Standard,Flange Type Codes. 101 Plate flange for welding,102 Loose plate flange with weld on plate collar. 104 Loose plate flange with weld nut collar,105 Blank flange. 111 Weld neck flange,112 Hubbed slip on flange for welding.
113 Hubbed threaded flange,121 Integral flange, Flange Face Types. Type A Flat Face Type D Grooved Face Type G Ring Recess. Type B Raised Face Type E Spigot Type H O Ring, Type C Tongue Face Type F Recess. Nominal Diameter DN , DN stands for Diameter Nominale it is a translation between imperial and metric sizing though not exact . 1 2 DN15 2 1 2 DN65 10 DN250,3 4 DN20 3 DN80 12 DN300. 1 DN25 4 DN100 14 DN350,1 1 4 DN32 5 DN125 16 DN400.
1 1 2 DN40 6 DN150 18 DN450,2 DN50 8 DN200 20 DN500. Flange PCD, PCD Pitch Circle Diameter Diameter described between centre of bolt holes . Pressure Rating, PN stands for Pressure Nominale and prefixes the pressure rating e g a PN16 flange is designed to operate up to 16 bar Typical ratings include. PN6 PN10 PN16 PN25 PN40 PN64 PN100 , The American ANSI standard refers instead to a pressure temperature rating termed Class . Gasket Materials, Effective for hydraulic fluids ketones hot and cold water and alkalis heat ozone and weather resistance .
Not for most oils gasoline kerosene aromatic and aliphatic hydrocarbons halogenated solvents and concentrated acids . Temp Range 40 oC to 120 oC,Natural Rubber SBR,Effective for Acids Bases abrasion resistance. Not for Oils oxidisaing agents aromatics hydrocarbons sunlight ozone oxygen. Temp Range 40 oC to 80 oC, Effective for weathering resistance ozone low gas permeability seawater applications. Not For Low temperature operations,Temp Range 20 oC to 100 oC. Effective for oils hot oils animal fats acids bases heat and resistance to abrasion gas . Not For nozone sunlight or weather resistance,Temp Range 20 oC to 110 oC. Effective for Ozone weathering general chemical resistance low gas moisture permeability. Not For Oils fuels fats,Temp Range 40 oC to 100 oC.
Effective For high temperatures solvents oils, Not For acetone esters ketones low temperature applications or steam. Temp Range 10 oC to 250 oC, Effective For high and low temperatures electrically insulating. Temp Range 60 oC to 220 oC,Nitrile Bonded Cork, Effective For Thermal insulation fuels oils refrigerants solvents vibration suppression. Temp Range 30 oC to 125 oC,Fibre Paper, Effective For vegetable oils fuel petrol petroleum distillates. Temp Range 20 oC to 120 oC, Flange Tables for the Heating and Ventilating Industry.
BS10 and BS1560 ANSI B16 5 , Bolts lengths are approx for flange flange duty assuming one 1 16 gasket and one washer. Flange thickness shown are the greatest thickness for any given rating. BS10 are available are forged bossed or flat plate as standard BS1560 are normally forged flanges. BS10 Table D BS10 Table E BS10 Table F, Flange Dimensions Dia Flange Dimensions Dia Flange Dimensions Dia . No Length Length Length, In Dia In Thick In PCD In Holes Bolts Dia In Thick In PCD In No Holes Bolts Dia In Thick In PCD In No Holes Bolts. 1 2 3 3 4 3 16 2 5 8 4 M12 25 3 3 4 1 4 2 5 8 4 M12 30 3 3 4 3 8 2 5 8 4 M12 40. 3 4 4 3 16 2 7 8 4 M12 25 4 1 4 2 7 8 4 M12 30 4 3 8 2 7 8 4 M12 40. 1 4 1 2 3 16 3 1 4 4 M12 25 4 1 2 9 32 3 1 4 4 M12 30 4 3 4 3 8 3 7 16 4 M16 45. 1 1 4 4 3 4 1 4 3 7 16 4 M12 30 4 3 4 5 16 3 7 16 4 M12 40 5 1 4 1 2 3 7 8 4 M16 45. 1 1 2 5 1 4 1 4 3 7 8 4 M12 30 5 1 4 11 32 3 7 8 4 M12 40 5 1 2 1 2 4 1 8 4 M16 50. 2 6 5 16 4 1 2 4 M16 40 6 3 8 4 1 2 4 M16 45 6 1 2 5 8 5 4 M16 55. Nominal Bore, 2 1 2 6 1 2 5 16 5 4 M16 40 6 1 2 13 32 5 4 M16 45 7 1 4 5 8 5 3 4 8 M16 55. 3 7 1 4 3 8 5 3 4 4 M16 45 7 1 4 7 16 5 3 4 4 M16 45 8 5 8 6 1 2 8 M16 55. 4 8 1 2 3 8 7 4 M16 45 8 1 2 1 2 7 8 M16 50 9 3 4 7 1 2 8 M16 65. 5 10 1 2 8 1 4 8 M16 45 10 9 16 8 1 4 8 M16 50 11 7 8 9 1 4 8 M20 70. 6 11 1 2 9 1 4 8 M16 50 11 11 16 9 1 4 8 M20 65 12 7 8 10 1 4 12 M20 70. 7 12 1 2 10 1 4 8 M16 50 12 3 4 10 1 4 8 M20 65 13 1 4 7 8 11 1 2 12 M20 70. 8 13 1 4 1 2 11 1 2 8 M16 50 13 1 4 3 4 11 1 2 8 M20 65 14 1 2 1 12 3 4 12 M20 75. 9 14 1 2 5 8 12 3 4 8 M16 55 14 1 2 13 16 12 3 4 12 M20 70 16 1 1 8 14 12 M22 80. 10 16 5 8 14 8 M20 55 16 7 8 14 12 M20 70 17 1 1 8 15 12 M22 80. 12 18 3 4 16 12 M20 65 18 1 16 12 M22 80 19 1 4 1 1 4 17 1 4 16 M22 90. 14 20 3 4 7 8 18 1 2 12 M22 70 20 3 4 1 1 8 18 1 2 12 M22 80 21 3 4 1 3 8 19 1 2 16 M24 100. 15 21 3 4 7 8 19 1 2 12 M22 70 21 3 4 1 1 4 19 1 2 12 M22 90 22 3 4 1 1 2 20 1 2 16 M24 105. 16 22 3 4 7 8 20 1 2 12 M22 70 22 3 4 1 1 4 20 1 2 12 M22 90 24 1 5 8 21 3 4 20 M24 110. 18 25 1 4 1 23 12 M22 75 25 1 4 1 3 8 23 16 M22 100 26 1 2 1 3 4 24 20 M27 120. 20 27 3 4 1 1 8 25 1 4 16 M22 80 27 3 4 1 1 2 25 1 4 16 M22 105 29 2 26 1 2 24 M27 130. 24 32 1 2 1 1 4 29 3 4 16 M24 90 32 1 2 1 7 8 29 3 4 16 M27 120 33 1 2 2 1 4 30 3 4 24 M30 150. Hex Round Hex HRH Bolts to, Standard Bolt Sizes, 1 2 M12 1 M24.
5 8 M16 1 1 4 M30, 3 4 M20, BS10 Table H BS1560 ANSI B16 5 Class 150 BS1560 ANSI B16 5 Class 300. Flange Dimensions Dia Flange Dimensions Dia Flange Dimensions Dia . No Length Length Length, In Dia In Thick In PCD In Holes Bolts Dia In Thick In PCD In No Holes Bolts Dia In Thick In PCD In No Holes Bolts. 1 2 4 1 2 1 2 3 1 4 4 M16 50 3 1 2 7 16 2 3 8 4 M12 45 3 3 4 9 16 2 5 8 4 M12 50. 3 4 4 1 2 1 2 3 1 4 4 M16 50 3 7 8 1 2 2 3 4 4 M12 50 4 5 8 5 8 3 1 4 4 M16 65. 1 4 3 4 9 16 3 7 16 4 M16 50 4 1 4 9 16 3 1 8 4 M12 50 4 7 8 11 16 3 1 2 4 M16 65. 1 1 4 5 1 4 11 16 3 7 8 4 M16 55 4 5 8 5 8 3 1 2 4 M12 55 5 1 4 3 4 3 7 8 4 M16 70. 1 1 2 5 1 2 11 16 4 1 8 4 M16 55 5 11 16 3 7 8 4 M12 55 6 1 8 13 16 4 1 2 4 M16 75. 2 6 1 2 3 4 5 4 M16 55 6 3 4 4 3 4 4 M16 70 6 1 2 7 8 5 8 M20 75. 2 1 2 7 1 4 3 4 5 3 4 8 M16 65 7 7 8 5 1 2 4 M16 75 7 1 2 1 5 7 8 8 M20 80. Nominal Bore, 3 8 7 8 6 1 2 8 M16 70 7 1 2 15 16 6 4 M16 75 8 1 4 1 1 8 6 5 8 8 M20 90. 4 9 1 7 1 2 8 M16 75 9 15 16 7 1 2 8 M16 75 10 1 1 4 7 7 8 8 M20 95. 5 11 1 1 8 9 1 4 8 M20 80 10 15 16 8 1 2 8 M20 80 11 1 3 8 9 1 4 8 M20 100. 6 12 1 1 8 10 1 4 12 M20 80 11 1 9 1 2 8 M20 80 12 1 2 1 7 16 10 5 8 12 M20 105. 7 13 1 4 1 1 4 11 1 2 12 M20 90 , 8 14 1 2 1 1 4 12 3 8 12 M20 90 13 1 2 1 1 8 11 3 4 8 M20 90 15 1 5 8 13 12 M22 105. 9 16 1 3 8 14 12 M22 100 , 10 17 1 3 8 15 12 M22 100 16 1 3 16 14 1 4 12 M22 95 17 1 2 1 7 8 15 1 4 16 M24 120.
12 19 1 4 1 5 8 17 1 4 16 M22 105 19 1 1 4 17 12 M22 100 20 1 2 2 17 3 4 16 M27 130. 14 21 3 4 1 7 8 19 1 2 16 M24 120 21 1 3 8 1 3 8 12 M24 105 23 2 1 8 20 1 4 20 M27 140. 15 22 3 4 2 20 1 2 16 M24 130 , 16 24 2 1 8 21 3 4 20 M24 140 23 1 2 1 7 16 21 1 4 16 M24 105 15 1 2 2 1 4 22 1 2 20 M30 150. 18 26 1 2 2 3 8 24 20 M27 150 25 1 9 16 22 3 4 16 M27 110 28 2 3 8 24 3 4 24 M30 150. 20 29 2 5 8 26 1 2 24 M27 170 27 1 2 1 11 16 25 20 M27 120 30 1 2 2 1 2 27 24 M30 160. 24 33 1 2 3 30 3 4 24 M30 200 32 1 7 8 29 1 2 20 M30 120 36 2 3 4 32 24 M36 180. Flange Tables for the Heating and Ventilating Industry. Bolts lengths are approx for flange flange duty assuming one 1 16 gasket and one washer. Flange thickness shown are the greatest thickness for any given rating. BS4504 Metric flanges are available as forged bossed or plate flanges as standard. Nominal BS 4504 Table 6 BS 4504 Table 10 BS 4504 Table 16. Bore Flange Dimensions Dia Length Flange Dimensions Dia Length Flange Dimensions Dia Length. Bolts Bolts Bolts, mm Dia Thick PCD No Dia Thick PCD No Dia Thick PCD No . mm mm mm Holes mm mm mm Holes mm mm mm Holes, 15 80 12 55 4 M10 45 95 14 65 4 M12 50 95 14 65 4 M12 50. 20 90 14 65 4 M10 50 105 16 75 4 M12 55 105 16 75 4 M12 55. 25 100 14 75 4 M10 50 115 16 85 4 M12 55 115 16 85 4 M12 55. 32 120 16 90 4 M12 55 140 16 100 4 M16 55 140 16 100 4 M16 55. 40 130 16 100 4 M12 55 150 16 110 4 M16 55 150 16 110 4 M16 55. 50 140 16 110 4 M12 55 165 18 125 4 M16 65 165 18 125 4 M16 65. 65 160 16 130 4 M12 55 185 18 145 4 M16 65 185 18 145 4 M16 65. 80 190 18 150 4 M16 65 200 20 160 8 M16 70 200 20 160 8 M16 70. 100 210 18 170 4 M16 65 220 20 180 8 M16 70 220 20 180 8 M16 70. 125 240 20 200 8 M16 70 250 22 210 8 M16 70 250 22 210 8 M16 70. 150 265 20 225 8 M16 70 285 22 240 8 M20 70 285 22 240 8 M20 70. 175 315 24 270 8 M20 75 315 24 270 8 M20 75, 200 320 22 280 8 M16 70 340 24 295 8 M20 75 340 24 295 12 M20 75. 250 375 24 335 12 M16 70 395 26 350 12 M20 80 405 26 355 12 M24 80. 300 440 24 395 12 M20 70 445 26 400 12 M20 80 460 28 410 12 M24 80. 350 490 26 445 12 M20 80 505 28 460 16 M20 80 520 32 470 16 M24 90. 400 540 28 495 16 M20 80 565 32 515 16 M24 90 580 36 525 16 M27 100. 450 595 30 550 16 M20 90 615 36 565 20 M24 105 640 40 585 20 M27 120. 500 645 30 600 20 M20 90 670 38 620 20 M24 105 715 44 650 20 M30 125. 600 755 32 705 20 M24 90 780 42 725 20 M27 120 840 52 770 20 M33 140. Hex Round Hex HRH Bolts to BS 4190, Standard Bolt Sizes.
1 2 M12 1 M24, 5 8 M16 1 1 4 M30, 3 4 M20, Nominal Bore Approx Bolting Torque Nm . To Seal 10 bar To Seal 16 bar To Seal 20 bar To Seal 25 bar. 80 70 70 75 75, 100 75 80 80 80, 150 115 120 125 135. 200 110 115 120 130, 250 155 165 175 180, 300 165 180 190 210. 350 160 175 185 200, 400 200 220 235 270, 450 195 215 230 260. 500 240 270 295 345, 600 305 365 425 505, Nominal BS 4504 Table 25 B20S 4504 Table 40 BS 4504 Table 64.
Bore Flange Dimensions Dia Flange18 Dimensions Dia Flange Dimensions Dia . mm Dia Thick PCD No Length Bolts Dia Thick18 PCD No Length Bolts Dia Thick PCD No Length Bolts. mm mm mm Holes mm mm18 mm Holes mm mm mm Holes, 15 95 16 65 4 M12 55 95 16 65 4 M12 55 105 20 75 4 M12 70. 20 105 18 75 4 M12 65 105 18 75 4 M12 65 130 22 90 4 M16 70. 25 115 18 85 4 M12 65 115 18 85 4 M12 65 140 24 100 4 M16 75. 32 140 18 100 4 M12 65 140 18 100 4 M16 65 155 24 110 4 M20 75. 40 150 20 110 4 M16 65 150 20 110 4 M16 70 170 26 125 4 M20 80. 50 165 20 125 4 M16 70 165 20 125 4 M16 70 180 26 135 4 M20 80. 65 185 22 145 8 M16 70 185 22 145 8 M16 70 205 26 160 8 M20 80. 80 200 24 160 8 M16 70 200 24 160 8 M16 75 215 30 170 8 M20 90. 100 235 26 190 8 M16 75 235 26 190 8 M20 80 250 32 200 8 M24 90. 125 270 28 220 8 M20 80 270 28 220 8 M24 80 295 34 240 8 M27 100. 150 300 30 250 8 M24 80 300 30 250 8 M24 90 345 36 280 8 M30 105. 175 330 28 280 12 M24 90 350 32 295 12 M27 90 375 40 310 12 M30 120. 200 360 30 310 12 M24 80 375 34 320 12 M27 90 415 46 345 12 M33 130. 250 425 40 370 12 M24 90 450 42 385 12 M30 120 470 54 400 12 M33 150. 300 485 38 430 16 M27 110 515 50 450 16 M30 140 530 62 460 16 M33 160. 350 555 42 490 16 M30 125 580 55 510 16 M33 150 600 72 525 16 M39 180. 400 620 46 550 16 M33 140 660 64 585 16 M36 160 670 78 585 16 M39 200. 450 670 52 600 20 M33 140 685 68 610 20 M36 170 , 500 730 58 660 20 M33 155 755 72 670 20 M39 180 . 600 845 66 770 20 M36 165 , CESWI 7 Compliance, The Civil Engineering Specification for Water Industry CESWI 7th edition is now the standards document for all civil engineering works The. document stipulates that the bolts in flange joint sets must be of sufficient length to ensure that nuts are fully threaded when tightened with. at least two threads showing when in their final tightened position Also that washers must be used both under the head of the bolt and. under the nut , fwb stock and supply CESWI 7 compliant sets containing appropriate bolt lengths each with two washers Typical sizes would include . Bolt Size Number, Nominal Bolt Size Number Nominal of Bolts.
Diameter Length Diameter of bolts Diameter Length. DN mm DN mm Diameter, 80 70 M16 8 450 110 M27 20, 100 70 M16 8 500 115 M30 20. 150 80 M20 8 600 130 M33 20, 200 80 M20 12, 700 135 M33 24. 250 90 M24 12, 300 100 M24 12 800 155 M36 24, 350 100 M24 16 900 155 M36 28. 400 100 M27 16 1000 165 M39 28, 1200 190 M45 32, Bolt Flange and Coupling Coatings. Galvanised, Rilsan Coatings, In production since 1947 polyamide 11 or Rilsan is conceptually similar to nylon and perlon and comes from the same chemical family as other.
leading materials such as Kevlar and Nomex , Powdered Rilsan coatings are ideal for use in the water industry it offers . 3 Flange Tables Bolt Sizing and Gasket Materials There are many different standards relating to the sizing and specification of flange amp bolt sets world wide common ones include ASA ANSI ASME USA PN

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