JIAHUI Fire Door Acceptance Standards?？

?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). ?Appearance: Surfaces must be free of dents, rust, or coating defects (per GB 12955-2008). ?Third-Party Performance Validation: Batch-sampled doors (minimum 1 per 50 units) must undergo independent laboratory testing per ?GB/T 7633? or ?ISO 834, including: ?Fire Resistance: Maintain structural integrity and insulation for rated duration (e.g., 90min for Grade A). ?Smoke Leakage: Air leakage ??≤1.5 m3/(m·h)?? at 50Pa pressure differential. Test reports must be submitted prior to project sign-off. ?Documentation & Compliance? ?Mandatory Records: Factory certifications (ISO/FM approval), product test reports, and installation logs. Third-party inspection certificates for耐火性能 (fire resistance) and气密性 (airtightness). ?Non-Conformance Handling: Doors failing any checkpoint require remediation (e.g., resealing, hardware replacement) and re-inspection. Persistent failures trigger batch rejection.