This Standard specifies the polyethylene pipes for general purposes to be used mainly for the conveyance of water except the use of water supply (hereafter referred to as "pipes").
NOTE: The International Standards corresponding to this Standard and the symbol of degree of correspondence are as follows.
ISO 4427-1: 2007 Plastics piping systems-Polyethylene (PE) pipes and fittings for water supply-Part 1: General
ISO 4427-2: 2007 Plastics piping systems-Polyethylene (PE) pipes and fittings for water supply-Part 2: Pipes (overall evaluation: MOD)
In addition, symbols which denote the degree of correspondence in the contents between the relevant International Standards and JIS are IDT (identical), MOD (modified), and NEQ (not equivalent) according to ISO/lEe Guide 21-1