Normas ISO

Optics and photonics — Optical transfer function — Principles and procedures of measurement

Vitreous and porcelain enamels — Glass-lined apparatus for process plants — Part 2: Designation and specification of resistance to chemical attack and thermal shock

ISO general purpose metric screw threads — Tolerances — Part 5: Limits of sizes for internal threads to mate with hot-dip galvanized external threads with maximum size of tolerance position h before galvanizing

ISO general purpose metric screw threads — Tolerances — Part 4: Limits of sizes for hot-dip galvanized external threads to mate with internal threads made to tolerance position H or G after galvanizing

Hydrogen fuel quality — Product specification

Information technology — Business operational view — Part 1: Operational aspects of open-edi for implementation