Swab (Bull Plug)

A steel plug which is pulled through a horizontal bore to remove the cuttings.

Swageing

The reduction in diameter of a polyethylene pipe by passing it through one or more dies. The die may be heated if necessary.

Swagelining

A method of sliplining whereby the diameter of the PEPolyethylene; a form of thermoplastic pipe. pipe is temporarily reduced by swageing prior to insertion in the defective pipe. After insertion, the pipe is expanded by means of steam or a rerounding device.

Swale (DIP, SAG)

A significant deviation In pipe grade such as to cause entrapment of solids, semisolids, and liquids, thereby impeding the accuracy and/or effectiveness of flow measurements, cleaning, and internal inspection.

Swivel Pulling

Used to attach service (to be pulled into drilled hole) to drill pipe.