Document
WIS 4-24-01A April 1991 Issue 1 Amendment 1 August 1995 Specification for mechanical fittings and joints including flanges for polyethylene pipes for the conveyance of cold potable water for the size range 90 to 1000 inclusive made of metal or plastics or a combination of both
Introduction
Both this document and WIS 4-24-01 Issue 1 April 1991 were subsequently replaced by WIS 4-24-01 Issue 2 July 1998.
Both are currently only available in a scanned format.
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