### Guidelines for the Design of Buried Steel Pipe July 2001

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Welded pipe, joined by welding techniques permitted by the ASME code or the API standards. Piping designed, fabricated, inspected and tested in accordance with an ASME B31 pressure piping code. These codes are: B31.1 power piping, B31.3 process piping, B31.4 liquid hydrocarbon pipelines, B31.5 refrigeration piping, B31.8 gas transmission and

### Pipe Flow Calculator

12 01 2022 The hydraulic radius, R, is the proportion between the area and the perimeter of your pipe. If the pipe is circular, you will find it according to the following equation: R = A / P = πr² / 2πr = r / 2 = d / 4. where r is the pipe