What quality control procedures should a curtain wall manufacturer follow?
A professional curtain wall manufacturer should implement comprehensive quality control (QC) at every production stage — from incoming materials through fabrication to pre-shipment verification. Expect documented procedures, staged inspections, and third-party performance testing.
Key Quality Control Stages
Aluminum profiles: dimensional check, surface finish, hardness, coating thickness and adhesion. Glass: thickness, edge quality, coating uniformity, IGU argon fill percentage. Sealants: batch testing, shelf-life verification, adhesion testing on actual substrates. Hardware: material certification (stainless steel grade), dimensional verification, functional testing.
Cutting accuracy (±0.5 mm) and squareness; machining hole positions and slot dimensions; assembly joint fit, bracket alignment, and thermal break insertion; glazing edge clearance and setting block placement; unitized panel frame squareness and overall dimensions.
Visual inspection for surface defects and coating uniformity; functional cycling tests on operable elements; dimensional audit by random sampling per an AQL plan; every panel tagged with its QC pass record.
Full-size mock-up tests for air infiltration (ASTM E283), water penetration (ASTM E331), structural performance (ASTM E330), and seismic drift (AAMA 501.6), plus material testing and independent third-party verification reports.
An ISO 9001 certified quality management system with documented procedures, non-conformance reporting, and material traceability, followed by packing verification, loading supervision, and a complete documentation package before shipment.
FOWALL runs a multi-stage QC system covering all the above areas, supports client and third-party inspections at its 550,000 m² facility, and applies a "Clarity Is Visibility" transparency principle so clients see quality data at every stage. ISO-certified processes and third-party test reports are available on request.
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