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IS 9523FlangesTG-DS-088 · size page

DN 400 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40

DN 400 (16") to IS 9523: OD 565 mm; PCD 515 mm; bolts 16; holes 28 mm; raised face 480 mm.

Full chart — all sizesRequest a quoteWatermarked, print-ready A4 · © Teshi Group
D = Ø565K (PCD) = Ø51516 holes × Ø28C = 24.5d1 = Ø480DN 400 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40 — drawn to scale from the tabulated dimensions (front view and half section)

Key to dimensions

D
Outside diameter of flange
B
Bore (inside diameter) of plate flange
C
Flange thickness — plate or blind, raised face (RF) or flat face (FF)
K
Bolt circle (pitch circle) diameter
n
Number of bolt holes
L
Bolt hole diameter
d1
Raised face diameter
f
Raised face height

DN 400 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40 — all dimensions

IS 9523 PN 10 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D565 mm22.24 in
Bolt circle — K515 mm20.28 in
Number of bolts16
Hole dia — L28 mm1.10 in
Raised face — d1480 mm18.90 in
RF height — f4 mm0.157 in
Bore — B409.4 mm16.12 in
Plate, RF — C24.5 mm0.965 in
Plate, FF — C20.5 mm0.807 in
Blind, RF — C24.5 mm0.965 in
Blind, FF — C20.5 mm0.807 in

IS 9523 PN 16 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D580 mm22.83 in
Bolt circle — K525 mm20.67 in
Number of bolts16
Hole dia — L31 mm1.22 in
Raised face — d1480 mm18.90 in
RF height — f4 mm0.157 in
Bore — B409.4 mm16.12 in
Plate, RF — C28 mm1.10 in
Plate, FF — C24 mm0.945 in
Blind, RF — C28 mm1.10 in
Blind, FF — C24 mm0.945 in

IS 9523 PN 25 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D620 mm24.41 in
Bolt circle — K550 mm21.65 in
Number of bolts16
Hole dia — L37 mm1.46 in
Raised face — d1503 mm19.80 in
RF height — f4 mm0.157 in
Bore — B409.4 mm16.12 in
Plate, RF — C32 mm1.26 in
Plate, FF — C28 mm1.10 in
Blind, RF — C32 mm1.26 in
Blind, FF — C28 mm1.10 in

IS 9523 PN 40 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D660 mm25.98 in
Bolt circle — K585 mm23.03 in
Number of bolts16
Hole dia — L40 mm1.57 in
Raised face — d1535 mm21.06 in
RF height — f4 mm0.157 in
Bore — B409.4 mm16.12 in
Plate, RF — C48 mm1.89 in
Plate, FF — C44 mm1.73 in
Blind, RF — C48 mm1.89 in
Blind, FF — C44 mm1.73 in
← DN 350DN 450 →

Values are nominal, from IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40. Verify critical dimensions against the current edition of the standard before design, purchase or fabrication.

Find another size or standard

Pick a product, standard and size — or just type — to see every dimension and download a watermarked PDF for that one size.

Other sizes — IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40

DN 80DN 100DN 125DN 150DN 200DN 250DN 300DN 350DN 400DN 450DN 500DN 600DN 700DN 750DN 800DN 900DN 1000DN 1100DN 1200DN 1400DN 1600DN 1800DN 2000

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FAQ

DN 400 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40: common questions

What are the DN 400 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40?

DN 400 (16") to IS 9523: OD 565 mm; PCD 515 mm; bolts 16; holes 28 mm; raised face 480 mm.

Does Teshi Group manufacture DN 400 flanges?

Yes. Teshi Group is an OEM manufacturer in India of flanges to IS 9523, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.

Can I download the DN 400 dimensions as a PDF?

Yes. Use “Download PDF for this size” on this page to get a single-size, print-ready PDF with the drawing and every tabulated dimension, or download the full IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40 chart.

Need DN 400 flanges?

Teshi Group manufactures them in India — send your size, rating and material and get a quote in 24–48 hours.

Request a quoteWhatsApp +91 78900 09110info@ / sales@teshigroup.com

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