Padr?es de aceita??o de portas corta-fogo JIAHUI?

?Q: What are the key acceptance criteria for JIAHUI fire doors during installation and final inspection??? ?A:?? JIAHUI fire doors must comply with rigorous national and industry standards to ensure fire integrity, structural stability, and operational reliability. The acceptance process spans three phases: ?pre-installation checks, ?installation execution, and ?post-installation validation. Below are the critical criteria: ?1. Pre-Installation Preparation? ?Dimensional Compliance: Wall opening dimensions must be verified before installation, with tolerances ??≤±5mm? in width/height. Deviations exceeding this require structural correction prior to door fitting. ?Embedded Components: All pre-embedded steel plates (e.g., anchor points) must undergo ?full-penetration welding. Welded joints require complete anti-rust coating (e.g., epoxy primer) to prevent corrosion. ?2. Installation Execution? ?Alignment Precision: Vertical deviation of the door frame: ??≤3mm per meter? (measured with a laser level). Horizontal deviation: ??≤2mm per meter? (checked via precision level). Frame misalignment compromises sealing and must be rectified immediately. ?Gap Management: Clearance between door leaf and frame must be ??≤3mm? on all sides (hinge, lock, top). Gaps exceeding this require adjustment or reseating. All seams must be filled with ?intumescent fire sealant? (e.g., graphite-based strips) to block smoke/flame penetration. ?Closer Calibration: After installation, door closers must enable automatic closure when the door is opened ?**≥90°. Closers failing to reset within ??≤60 seconds**? or exhibiting resistance >80N force are non-compliant. ?3. Final Inspection & Testing? ?Comprehensive Functional Checks: ?Seals: Fire-resistant seals (e.g., ceramic silicone strips) must adhere fully to the frame with ?zero gaps or peeling. ?Hardware: Hinges, locks, and closers must operate smoothly without jamming, deformation, or excessive force (>80N). Aparência: As superfícies devem estar isentas de amassados, ferrugem ou defeitos de revestimento (conforme GB 12955-2008). Valida??o de desempenho por terceiros: Amostras de portas do lote (mínimo de 1 a cada 50 unidades) devem ser submetidas a testes laboratoriais independentes, conforme GB/T 7633 ou ISO 834, incluindo: Resistência ao fogo: Manter a integridade estrutural e o isolamento durante a dura??o nominal (por exemplo, 90 minutos para a Classe A). Vazamento de fuma?a: Vazamento de ar ≤ 1,5 m3/(m·h) a uma press?o diferencial de 50 Pa. Os relatórios de teste devem ser submetidos antes da aprova??o do projeto. Documenta??o e conformidade: Registros obrigatórios: Certifica??es de fábrica (aprova??o ISO/FM), relatórios de teste do produto e registros de instala??o. Certificados de inspe??o de terceiros para resistência ao fogo e estanqueidade ao ar. Tratamento de n?o conformidades: Portas que n?o atenderem a qualquer critério de verifica??o exigem reparos (por exemplo, veda??o, substitui??o de ferragens) e reinspe??o. Falhas persistentes resultam na rejei??o do lote.