Specify treatment by part condition, manufacturing route and exposure rather than applying one generic passivation statement to every component.
Clean cable terminals, glass clamps, fasteners and crevices without trapping chemicals or damaging polished and brushed finishes.
Trace tea staining to embedded particles, heat tint, abrasive transfer and residue trapped in finish lines or crevices.
Pickling removes scale and altered surface layers; passivation addresses surface condition after cleaning, with different controls and risks.
Build maintenance around exposure, salt retention, crevices, dissimilar metals, fastener condition and finish appearance.
Remove grinding dust, weld residue, cement deposits and carbon-steel contamination before handover to prevent avoidable staining.


Foshan ESANG Metal Products proudly maintains CE certification (Verification No. TD32772401) under the Construction Products Directive (Regulation No. 305/2011), affirming our commitment to the highest European safety and quality standards.
Certified Product Range:
Our comprehensive railing fittings portfolio—including glass clamps, tensioners, brackets, wall mounts, base shoes, handrail fittings, cable hardware, and post components—meets EN1906:2012 standards, ensuring structural integrity and performance reliability across all installations.
What This Means for Your Project:
✓ Full regulatory compliance for European and international markets
✓ Independently verified safety and durability performance
✓ Documentation support for architectural specifications
✓ Peace of mind from third-party quality assurance
Certification valid through 2027 | Test Report: CE-FE24122001-CY

