Page 123 - Pipeline Rules of Thumb Handbook

110 Pipeline Rules of Thumb Handbook

Subscripts (for Greek letters only) B Point B, unrestrained
L Longitudinal PR Pressure
H Hoop TE Temperature
A Point A, fully restrained PO Poisson

How to identify the series number of flanged fittings

Divide the flange thickness, expressed in sixteenths of an 23 18 1 28.; the flange is series 30.
=
inch, by the nominal pipe size + 12. If the answer is less than
1.00, the flange is Series 15; if between 1.15 and 1.33, it is
Series 30; if between 1.37 and 1.54, it is Series 40; and if it is
between 1.60 and 1.85, it is Series 60.
The rule is not applicable to fittings below four inches in
7
Example. A six-inch flange has a thickness of 1 / 16 inch = size; it also fails for a four-inch Series 60, which comes out
23
/ 16 inch. 1.50.

Dimensions of three-diameter ells with tangents

Here are face-to-face and center-to-face dimensions of the
three-diameter radius weld ells being used in natural gas com-
pressor station piping.