IS 6392 PN 40 Flange Dimensions
This chart gives IS 6392 PN 40 steel pipe flange dimensions in millimetres — outside diameter, thickness, raised face, bolt circle (PCD) and bolting for plate flanges for welding (slip-on), weld neck and blind flanges. IS 6392 is the Indian Standard for steel pipe flanges and is widely specified on Indian boiler, water, refinery and power projects.
Teshi Group manufactures IS 6392 flanges in India alongside its ASME B16.5 and EN 1092-1 range.
Key to dimensions
- D
- Outside diameter of flange
- A
- Pipe outside diameter (hub diameter at the weld end)
- C
- Flange thickness, excluding raised face unless stated
- d1
- Raised face diameter
- f
- Raised face height
- N
- Neck / hub diameter at base
- H
- Length through hub / neck length
- K
- Bolt circle (pitch circle) diameter
- n
- Number of bolts
- L
- Bolt hole diameter
- Bolt
- Bolt size (metric M or inch diameter)
IS 6392 PN 40 Flange Dimensions — tables
PN 40 (Table 28) — plate flanges for welding (slip-on plate)
| Size | APipe OD | DFlange OD | CFlange | d1Raised face | fRF height | KBolt circle | nBolts | LHole dia | BoltSize |
|---|---|---|---|---|---|---|---|---|---|
| 10 | 17.2 | 90 | 16 | 40 | 2 | 60 | 4 | 14 | M12 |
| 15 | 21.3 | 95 | 16 | 45 | 2 | 65 | 4 | 14 | M12 |
| 20 | 26.9 | 105 | 18 | 58 | 2 | 75 | 4 | 14 | M12 |
| 25 | 33.7 | 115 | 18 | 68 | 2 | 85 | 4 | 14 | M12 |
| 32 | 42.4 | 140 | 18 | 78 | 2 | 100 | 4 | 18 | M16 |
| 40 | 48.3 | 150 | 20 | 88 | 3 | 110 | 4 | 18 | M16 |
| 50 | 60.3 | 165 | 20 | 102 | 3 | 125 | 4 | 18 | M16 |
| 65 | 76.1 | 185 | 22 | 122 | 3 | 145 | 8 | 18 | M16 |
| 80 | 88.9 | 200 | 24 | 138 | 3 | 160 | 8 | 18 | M16 |
| 100 | 114.3 | 235 | 26 | 162 | 3 | 190 | 8 | 22 | M20 |
| 125 | 139.7 | 270 | 28 | 188 | 3 | 220 | 8 | 26 | M24 |
| 150 | 168.3 | 300 | 30 | 218 | 3 | 250 | 8 | 26 | M24 |
| 175 | 193.7 | 350 | 32 | 260 | 3 | 295 | 12 | 30 | M27 |
| 200 | 219.1 | 375 | 34 | 285 | 3 | 320 | 12 | 30 | M27 |
| 250 | 273 | 450 | 42 | 345 | 3 | 385 | 12 | 33 | M30 |
| 300 | 323.9 | 515 | 50 | 410 | 4 | 450 | 16 | 33 | M30 |
| 350 | 355.6 | 580 | 56 | 465 | 4 | 510 | 16 | 36 | M33 |
| 400 | 406.4 | 660 | 64 | 535 | 4 | 585 | 16 | 39 | M36 |
| 500 | 508 | 755 | 72 | 615 | 4 | 670 | 20 | 42 | M39 |
PN 40 (Table 27 weld-neck + Table 31 blind) — thickness, neck and drilling
| Size | APipe OD | DFlange OD | CWeld neck | HWN length | NHub / neck dia | d1Raised face | fRF height | KBolt circle | nBolts | LHole dia | BoltSize | CBlind |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 17.2 | 90 | 16 | 35 | 28 | 40 | 2 | 60 | 4 | 14 | M12 | 16 |
| 15 | 21.3 | 95 | 16 | 38 | 32 | 45 | 2 | 65 | 4 | 14 | M12 | 16 |
| 20 | 26.9 | 105 | 18 | 40 | 40 | 58 | 2 | 75 | 4 | 14 | M12 | 18 |
| 25 | 33.7 | 115 | 18 | 40 | 46 | 68 | 2 | 85 | 4 | 14 | M12 | 18 |
| 32 | 42.4 | 140 | 18 | 42 | 56 | 78 | 2 | 100 | 4 | 18 | M16 | 18 |
| 40 | 48.3 | 150 | 18 | 45 | 64 | 88 | 3 | 110 | 4 | 18 | M16 | 18 |
| 50 | 60.3 | 165 | 20 | 48 | 75 | 102 | 3 | 125 | 4 | 18 | M16 | 20 |
| 65 | 76.1 | 185 | 22 | 52 | 90 | 122 | 3 | 145 | 8 | 18 | M16 | 22 |
| 80 | 88.9 | 200 | 24 | 58 | 105 | 138 | 3 | 160 | 8 | 18 | M16 | 24 |
| 100 | 114.3 | 235 | 24 | 65 | 134 | 162 | 3 | 190 | 8 | 22 | M20 | 24 |
| 125 | 139.7 | 270 | 26 | 68 | 162 | 188 | 3 | 220 | 8 | 26 | M24 | 26 |
| 150 | 168.3 | 300 | 28 | 75 | 192 | 218 | 3 | 250 | 8 | 26 | M24 | 28 |
| 175 | 193.7 | 350 | — | 82 | — | 260 | 3 | 295 | 12 | 30 | M27 | 32 |
| 200 | 219.1 | 375 | 34 | 88 | 244 | 285 | 3 | 320 | 12 | 30 | M27 | — |
| 250 | 273 | 450 | 38 | 105 | — | 345 | 3 | 385 | 12 | 33 | M30 | 38 |
| 300 | 323.9 | 515 | 42 | 115 | — | 410 | 4 | 450 | 16 | 33 | M30 | 42 |
| 350 | 355.6 | 580 | 46 | 125 | 408 | 465 | 4 | 510 | 16 | 36 | M33 | — |
| 400 | 406.4 | 660 | 50 | 135 | 462 | 535 | 4 | 585 | 16 | 39 | M36 | 50 |
| 500 | 508 | 755 | 52 | 140 | 562 | 615 | 4 | 670 | 20 | 42 | M39 | 56 |
Notes
- All dimensions are in millimetres.
- The PN 40 tables also apply to DN 10–150 at PN 25.
- IS 6392 drilling follows the ISO/DIN metric series, so IS 6392 flanges generally mate with EN 1092-1 / DIN flanges of the same PN — check the raised face and thickness for your flange type.
- Values are nominal, compiled from published copies of the standard; blank cells (—) are values not confirmed from the sources available. Verify against the current edition before design, purchase or fabrication.
Reference information compiled from the published standard for convenience. It does not replace the current edition of the governing standard, which takes precedence. Verify critical dimensions and properties before design, purchase or fabrication. Teshi Engineers & Sales Promoters (P) Ltd accepts no liability for errors or omissions.
Dimension finder
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IS 6392 PN 40 Flange Dimensions — size by size
Every size has its own page with a drawing, mm and inch values and a one-size PDF.
Equivalent and related standards to IS 6392 PN 40 Flange Dimensions
All equivalents| Region | Standard | Relationship |
|---|---|---|
| Europe | EN 1092-1 PN 40 | Closely related European PN tables; check drilling and thickness |
| UK | BS 4504 PN 40 (withdrawn) | Former British PN flanges |
| China | GB/T 9124.1 / HG/T 20592 PN 40 | Chinese PN flanges (European system) |
| International | ISO 7005-1 PN 40 | ISO steel flanges, PN series |
Teshi Group manufactures flanges and fittings to all of these standards on request, including Chinese GB / HG / SH and European EN dimensions for export projects. Always confirm bolting, facing and thickness when substituting one standard for another.
FAQ
IS 6392 PN 40 Flange dimensions: common questions
What are the dimensions of a DN 100 IS 6392 PN 40 flange?
A DN 100 IS 6392 PN 40 plate flange has an outside diameter of 235 mm, a bolt circle of 190 mm and 8 holes of 22 mm for M20 bolts.
Is IS 6392 the same as EN 1092-1 / DIN?
The bolt circles and drilling of IS 6392 follow the same metric PN series as DIN and EN 1092-1, so most sizes mate; flange thickness and raised-face details can differ, so check the table for the flange type you need.
Does Teshi Group manufacture IS 6392 flanges?
Teshi Group manufactures steel flanges in India to IS 6392 drilling — weld neck, slip-on, plate and blind — in carbon, alloy, stainless, duplex and nickel-alloy grades, with EN 10204 3.1 certificates.
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