Hydraulic fluid power. Flange connections with split or one-piece flange clamps and metric or inch screws. Flange connectors, ports and mounting surfaces for use at pressures of 3,5 MPa (35 bar) to 35 MPa (350 bar), DN 13 to DN 127— 30 стр.
Hydraulic fluid power - General rules and safety requirements for systems and their components (ISO 4413:2010); German version EN ISO 4413:2010— 57 стр.