Lead pipe replacement procedure consists of cutting pipe lengthwise with combined traction and percussion to make room for plastic pipe

摘要

The procedure makes use of a cutting tool with a hammer (4) and an enlargement head, and is designed to cut an underground lead pipe (1) lengthwise and enlarge it to make room for a replacement plastic pipe (9). The tool has one or more cutting blades or wheels and is drawn through the lead pipe with a combination of traction, using a cable (7) and winch (8), and percussion.