Recommendation / Stainless steel butt hinge

Certification Compliance Framework 1, Certified Manufacturer's Non-certified Products Produced under identical quality systems but without third-party certification marks 2, Certified Product Definition Compliance verified through random batch sampling (per EN 1906:2012 Clause 8.2) Maintains Grade 3/4 performance thresholds across full production runs

Standard Rework Protocol 1.Nonconformance Identification Failed components undergo ASTM B117 salt spray testing (72hrs minimum) 2. Full-Strip Reprocessing Certified stripping using EN 12540-compliant chemical baths Three-stage ultrasonic cleaning (DI water > Alkaline > Acidic) 3. Re-plating Verification Cross-section microscopy to validate base metal integrity Adhesion testing per ISO 2819 (≥8MPa required) Unapproved Shortcut Practice Illegitimate Process Flow: Contravenes RoHS Directive 2011/65/EU Article 4(1)

This document addresses issues related to internal components (iron-based parts) that require processing, electroplating, inspection, and assembly prior to installation. However, nonconforming electroplating results frequently occur during production. Standard Nonconformance Handling Process: 1, Return defective components to the plating vendor. 2, The vendor must professionally strip all defective plating layers, perform thorough cleaning, and re-plate the components. Unapproved Shortcut Practice:
 Some suppliers occasionally use prohibited chemical agents to locally remove defective plating areas without full stripping, followed by direct re-plating. This method evades detection during routine inspections and standard salt spray testing (e.g., ASTM B117).

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