Specified by what the line has to do

Four duties, four different governing factors. Each page sets out how the pipe is chosen and what we need to quote it.

Municipal water supply

Working pressure plus surge, SDR selection, coil versus straight, and what belongs in the quotation.

Abrasion governs the wall, joints survive the site. SDR by duty and the layout points that decide service life.

Coil sizes, pressure classes by scheme type, and the five layout mistakes that cost a season.

Floater spacing, sinker sections, flange standards and wear allowance on the discharge run.