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IS 9523FlangesTG-DS-088 · size page

DN 300 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40

DN 300 (12") to IS 9523: OD 445 mm; PCD 400 mm; bolts 12; holes 23 mm; raised face 370 mm.

Full chart — all sizesRequest a quoteWatermarked, print-ready A4 · © Teshi Group
D = Ø445K (PCD) = Ø40012 holes × Ø23C = 24.5d1 = Ø370DN 300 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 300 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 — D445 mm17.52 in
Bolt circle — K400 mm15.75 in
Number of bolts12
Hole dia — L23 mm0.906 in
Raised face — d1370 mm14.57 in
RF height — f4 mm0.157 in
Bore — B326.9 mm12.87 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 — D455 mm17.91 in
Bolt circle — K410 mm16.14 in
Number of bolts12
Hole dia — L28 mm1.10 in
Raised face — d1370 mm14.57 in
RF height — f4 mm0.157 in
Bore — B326.9 mm12.87 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 25 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D485 mm19.09 in
Bolt circle — K430 mm16.93 in
Number of bolts16
Hole dia — L31 mm1.22 in
Raised face — d1389 mm15.31 in
RF height — f4 mm0.157 in
Bore — B326.9 mm12.87 in
Plate, RF — C27.5 mm1.08 in
Plate, FF — C23.5 mm0.925 in
Blind, RF — C27.5 mm1.08 in
Blind, FF — C23.5 mm0.925 in

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

DimensionValueEquivalent
Flange OD — D515 mm20.28 in
Bolt circle — K450 mm17.72 in
Number of bolts16
Hole dia — L34 mm1.34 in
Raised face — d1409 mm16.10 in
RF height — f4 mm0.157 in
Bore — B326.9 mm12.87 in
Plate, RF — C39.5 mm1.56 in
Plate, FF — C35.5 mm1.40 in
Blind, RF — C39.5 mm1.56 in
Blind, FF — C35.5 mm1.40 in
← DN 250DN 350 →

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

What are the DN 300 IS 9523 Flange Dimensions — Plate & Blind, PN 10 to PN 40?

DN 300 (12") to IS 9523: OD 445 mm; PCD 400 mm; bolts 12; holes 23 mm; raised face 370 mm.

Does Teshi Group manufacture DN 300 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 300 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 300 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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