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Blind Thickness Calculation: Refer Section 304.5.3 ASME B31.3 Diam, NB Class Diam, DG

This document provides a calculation for determining the minimum required blind thickness (tm) for piping based on parameters like inside diameter to gasket (dg), design pressure (P), material stress value (S), and material. It lists the thickness calculated for different pipe diameters, classes, and materials according to the specified equation and code requirements.

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Varun Malhotra
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1K views1 page

Blind Thickness Calculation: Refer Section 304.5.3 ASME B31.3 Diam, NB Class Diam, DG

This document provides a calculation for determining the minimum required blind thickness (tm) for piping based on parameters like inside diameter to gasket (dg), design pressure (P), material stress value (S), and material. It lists the thickness calculated for different pipe diameters, classes, and materials according to the specified equation and code requirements.

Uploaded by

Varun Malhotra
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as XLS, PDF, TXT or read online on Scribd
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Blind Thickness Calculation

Refer Section 304.5.3 ASME B31.3 Diam, NB Class Diam, dg


300 900 323.9
300 600 327.2
3P
t m=d g
√ 16 SE
Plate material
+C
A515-70
Eq… 15

Specification ASTM Or Equivalent


250
250
200
200
900
600
900
600
276.4
274.6
222.2
225.6
Inside diameter to gasket, dg 327.2 mm 150 600 174.8
Quality factor, E 1 Refer A1-A, A1-B 100 600 120.7
Design Pressure, P 10210 kPa
Material Stress value, S 23 ksi Refer A-1 at 38 C Material Des. Stress
160654 kPa A105 - GR2 160000
Allowances, C 0 mm A515 - 70 160000
AS 1548-7-460R 178000
Thickness, tm 35.7 mm

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