International Organization for Standardization (ISO)
Latest
ISO 6759:1980
Scope
Specifies the characteristics of plain end tubes manufactured from unalloyed and alloyed steels (including austenitic and ferritic stainless steels). It does not apply to steel tubes indended for exposure to flame. An annex gives metric dimensions which correspond to inch dimension.
ISO 6759:1980 history
1980ISO 6759:1980 Seamless steel tubes for heat exchangers