DIN ISO 6162-2:2006
Hydraulic fluid power - Flange connectors with split or one-piece flange clamps and metric or inch screws - Part 2: Flange connectors for use at pressures of 35 MPa (350) to 40 MPa (400 bar), DN 13 to DN 51 (ISO 6162-2:2002);English version of DIN ISO 616