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ASME B16.5FlangesTG-DS-084 · size page

DN 250 ASME B16.5 Plate Flange & Blind Flange Dimensions

DN 250 (10") to ASME B16.5: OD 406.4 mm; PCD 362 mm; bolts 12; holes 25.4 mm; raised face 323.8 mm.

Full chart — all sizesRequest a quoteWatermarked, print-ready A4 · © Teshi Group
D = Ø406.4K (PCD) = Ø36212 holes × Ø25.4C = 30.2d1 = Ø323.8DN 250 ASME B16.5 Plate Flange & Blind Flange Dimensions — 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 250 ASME B16.5 Plate Flange & Blind Flange Dimensions — all dimensions

ASME B16.5 Class 150 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D406.4 mm16.00 in
Bolt circle — K362 mm14.25 in
Number of bolts12
Hole dia — L25.4 mm1.00 in
Raised face — d1323.8 mm12.75 in
RF height — f1.6 mm0.063 in
Bore — B276.4 mm10.88 in
Plate, RF — C30.2 mm1.19 in
Plate, FF — C28.6 mm1.13 in
Blind, RF — C30.2 mm1.19 in
Blind, FF — C28.6 mm1.13 in

ASME B16.5 Class 300 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D444.5 mm17.50 in
Bolt circle — K387.4 mm15.25 in
Number of bolts16
Hole dia — L28.6 mm1.13 in
Raised face — d1323.8 mm12.75 in
RF height — f1.6 mm0.063 in
Bore — B276.4 mm10.88 in
Plate, RF — C47.6 mm1.87 in
Plate, FF — C46 mm1.81 in
Blind, RF — C47.6 mm1.87 in
Blind, FF — C46 mm1.81 in

ASME B16.5 Class 400 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D445 mm17.52 in
Bolt circle — K387.4 mm15.25 in
Number of bolts16
Hole dia — L31.8 mm1.25 in
Raised face — d1323.8 mm12.75 in
RF height — f6.4 mm0.252 in
Bore — B276.2 mm10.87 in
Plate, RF — C60.4 mm2.38 in
Plate, FF — C54 mm2.13 in
Blind, RF — C60.4 mm2.38 in
Blind, FF — C54 mm2.13 in

ASME B16.5 Class 600 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D510 mm20.08 in
Bolt circle — K431.8 mm17.00 in
Number of bolts16
Hole dia — L34.9 mm1.37 in
Raised face — d1323.8 mm12.75 in
RF height — f6.4 mm0.252 in
Bore — B276.2 mm10.87 in
Plate, RF — C69.9 mm2.75 in
Plate, FF — C63.5 mm2.50 in
Blind, RF — C69.9 mm2.75 in
Blind, FF — C63.5 mm2.50 in

ASME B16.5 Class 900 — plate and blind flange (mm)

DimensionValueEquivalent
Flange OD — D545 mm21.46 in
Bolt circle — K469.9 mm18.50 in
Number of bolts16
Hole dia — L38.1 mm1.50 in
Raised face — d1323.8 mm12.75 in
RF height — f6.4 mm0.252 in
Bore — B276.2 mm10.87 in
Plate, RF — C76.3 mm3.00 in
Plate, FF — C69.9 mm2.75 in
Blind, RF — C76.3 mm3.00 in
Blind, FF — C69.9 mm2.75 in
← DN 200DN 300 →

Values are nominal, from ASME B16.5 Plate Flange & Blind Flange Dimensions. 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 — ASME B16.5 Plate Flange & Blind Flange Dimensions

DN 15DN 20DN 25DN 32DN 40DN 50DN 65DN 80DN 90DN 100DN 125DN 150DN 200DN 250DN 300DN 350DN 400DN 450DN 500DN 600

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FAQ

DN 250 ASME B16.5 Plate Flange & Blind Flange Dimensions: common questions

What are the DN 250 ASME B16.5 Plate Flange & Blind Flange Dimensions?

DN 250 (10") to ASME B16.5: OD 406.4 mm; PCD 362 mm; bolts 12; holes 25.4 mm; raised face 323.8 mm.

Does Teshi Group manufacture DN 250 flanges?

Yes. Teshi Group is an OEM manufacturer in India of flanges to ASME B16.5, in carbon, alloy, stainless, duplex, super duplex, nickel alloys, titanium and Cu-Ni, with EN 10204 3.1 certificates.

Can I download the DN 250 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 ASME B16.5 Plate Flange & Blind Flange Dimensions chart.

Need DN 250 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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