Piawaian Penerimaan Pintu Kebakaran 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). Rupa: Permukaan mesti bebas daripada kemek, karat atau kecacatan salutan (mengikut GB 12955-2008). Pengesahan Prestasi Pihak Ketiga: Pintu sampel kelompok (minimum 1 setiap 50 unit) mesti menjalani ujian makmal bebas mengikut GB/T 7633 atau ISO 834, termasuk: Rintangan Api: Mengekalkan integriti struktur dan penebat untuk tempoh yang dinilai (cth., 90 minit untuk Gred A). Kebocoran Asap: Kebocoran udara ≤1.5 m3/(m·j) pada perbezaan tekanan 50Pa. Laporan ujian mesti dihantar sebelum kelulusan projek. Dokumentasi & Pematuhan Rekod Wajib: Pensijilan kilang (kelulusan ISO/FM), laporan ujian produk dan log pemasangan. Sijil pemeriksaan pihak ketiga untuk 耐火性能 (rintangan api) dan 气密性 (kedap udara). Pengendalian Ketidakpatuhan: Pintu yang gagal memenuhi mana-mana pusat pemeriksaan memerlukan pemulihan (cth., pengedap semula, penggantian perkakasan) dan pemeriksaan semula. Kegagalan berterusan mencetuskan penolakan kelompok.