Cleaning PIG Sizing

Dimensional tolerances for pipeline cleaning tools

Pipeline Parameters

Nominal Pipe Size

Outside Diameter

- mm

- in

Minimum WT mm

Maximum WT mm

Internal Diameter (ID)

- mm (min)

- mm (max)

Calculated Dimensions

PIG Body Length 1.0 to 1.5 × OD

- to - mm

Foam PIG Diameter 105% to 110% of IDmax

- to - mm

Seal Disc Diameter 102% to 105% of IDmax

- to - mm

Gauge Plate Diameter 95% to 98% of IDmin

- to - mm

Guide Disc Diameter 98% to 100% of IDmax

- to - mm

Foam Pass Through 50% of IDmin

- mm

Other Pass Through 85% of IDmin

- mm

Operational Notes

Each pig / spare discs should be suitable for continuous run up to 250 km.
Magnetic packs require a minimum 3 kg lift capacity and 800 gauss strength per magnet.