Piping

SDR 26 vs Schedule 40 Pipe

SDR-26 and Schedule 40 pipe offer varying levels of wall thicknesses for piping frameworks. Both Schedule and SDR pipes have external diameters based on IPS (iron pipe standard), yet their…

Residual Pressure

Residual pressure is a concept common with water supply systems. It refers to the pressure remaining in a pipe during flow conditions. This contrasts with static pressure, which is the…

Pipe Invert Elevation

Pipe invert elevation is the vertical distance between the inside-bottom of a pipe and a given benchmark. Moreover, the term ‘invert’ stems from the resemblance of the pipe bottom to…

Popping Test

The Popping Test or Pop Test is a set pressure test of Pressure Relief Valve (PRV). It is done by compressing air into the inlet of PRV until the valve…

Q235 Steel

Q235 is low-carbon structural steel often used in China. This article will discuss Q235 steel, properties, equivalent grades, and applications. Q235 Steel “Q” is the first character of the Chinese…