ISO 228-2:1987 Preview
Pipe threads where pressure-tight joints are not made on the threads -- Part 2: Verification by means of limit gauges
This standard was last reviewed and confirmed* in 2015.
*Therefore this version remains current
This second edition cancals and replaces the first edition (1980). Specifies the verification of cylindrical threads, the dimensions and tolerances of which are given in ISO 228-1. Since this 55o profile has different elements to be verified, it is necessary to provide for several GO and several NOT GO gouges.