Tiêu chu?n nghi?m thu c?a ch?ng cháy 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). Ngo?i hình: B? m?t ph?i kh?ng có v?t l?m, r? sét ho?c l?i l?p ph? (theo GB 12955-2008). Ki?m ??nh hi?u su?t c?a bên th? ba: Các c?a ???c l?y m?u theo l? (t?i thi?u 1 c?a trên 50 ??n v?) ph?i tr?i qua th? nghi?m phòng thí nghi?m ??c l?p theo GB/T 7633 ho?c ISO 834, bao g?m: Kh? n?ng ch?ng cháy: Duy trì tính toàn v?n c?u trúc và kh? n?ng cách nhi?t trong th?i gian ??nh m?c (ví d?: 90 phút cho c?p A). ??Rò r? khói: Rò r? kh?ng khí ≤1,5 ??m3/(m·h) ? chênh l?ch áp su?t 50Pa. Báo cáo th? nghi?m ph?i ???c n?p tr??c khi d? án ???c phê duy?t. Tài li?u & Tuan th? H? s? b?t bu?c: Ch?ng nh?n c?a nhà máy (phê duy?t ISO/FM), báo cáo th? nghi?m s?n ph?m và nh?t ky l?p ??t. Ch?ng ch? ki?m tra c?a bên th? ba v? kh? n?ng ch?ng cháy và ?? kín khí. X? ly hàng kh?ng ??t tiêu chu?n: C?a kh?ng ??t b?t k? khau ki?m tra nào ??u c?n ???c kh?c ph?c (ví d?: dán l?i gio?ng, thay th? ph? ki?n) và ki?m tra l?i. Các l?i tái di?n s? d?n ??n vi?c t? ch?i toàn b? l? hàng.