This European standard specifies performance requirements and test methods for single-axis hinges for doors and windows, covering both lift-off and fixed-pin types. For use on fire/smoke door assemblies, single-axis hinges must be tested to EN 1634-1 for fire resistance, in addition to the tests spe
DIROCK Grade 4 lever handles deliver premium mechanical and fire-rated performance for doors subject to heavy and violent use in high-traffic commercial and public buildings(e.g. football stadiums, offshore installations (oil rigs), etc). Tested and certified to EN1906 standard, they ensure safety, durability, and compliance in demanding architectural and fire door hardware projects. These handles are typically specified alongside EN 179 emergency mortise locks to form a complete, code-compliant escape route system.
• Reinforced structure & extreme endurance — Constructed with a solid stainless steel core, circumferential welding, and a 1.2 mm wall thickness, the Grade 4 lever handle achieves exceptional structural integrity. This robust construction enables it to withstand 300,000 cycles durability and resist 1,000 N of axial force without deformation, delivering superior long-term performance and reliability in the most demanding environments.
• 480-hour corrosion resistance — Passed extended salt spray testing( EN 1670), offering exceptional protection in humid, coastal, or chemically exposed environments.
• 240-minute fire integrity — Passed fire resistance test for 4 hours on steel fire doors, supporting the high levels of fire and life safety compliance.
