Support at Every Project Stage

Quality Documentation & Inspection

Inspection scope is agreed per order. Depending on the quotation and specification, records can cover incoming material certificates, dimensions, welds, zinc coating thickness, panel marks and final packing under DONGFU’s ISO 9001:2015 certified quality management system.

Welders at work in the DONGFU steel grating factory workshop

What we check

For orders requiring documented inspection, the agreed checks can run from incoming material review to packed panels. The scope may include material certificates, bearing bar size and spacing, weld points, dimensions against approved drawings, and coating-thickness readings after galvanizing. Required records are listed in the quotation or order documents.

Certifications & standards

DONGFU operates an ISO 9001:2015 quality management system certified for the manufacture and sales of wire mesh and metal fence products. Products can be manufactured and tested to the project-specified edition of NAAMM, ASTM, ISO or other agreed requirements. A separate voluntary restricted-substance test document applies only to the submitted steel grating sample and listed BS EN 62321 methods; it does not assess ongoing production or structural performance and is not presented as whole-product UK construction certification.

Records and traceability

When included in the quotation or order requirements, an order file can contain material certificates, dimensional inspection results, coating gauge reports, photographs and a packing list keyed to panel numbers. Where a project requires independent verification, third-party inspection can be coordinated before shipment if it is requested early enough to schedule.

What QC does — and what it does not decide

Quality control confirms that panels match the agreed specification: bar size and thickness, spacing, dimensions and diagonals, weld points, flatness, banding and cut-outs, zinc coating and appearance. Suitability for a particular span and load is an engineering question settled earlier — the specification is confirmed against span, load type and support conditions before production begins.

Process

How It Works

Incoming material

Mill certificates verified; bar dimensions and appearance checked.
In-process checks

Spacing, weld points and panel size monitored during welding.
Dimensional inspection

Diagonals, flatness, banding and cut-outs measured against drawings.
Coating verification

Zinc thickness measured by coating gauge against the agreed standard.
Pre-packing review

Appearance, labels, panel numbering and packing checked; records filed.

Checklist

What to Prepare

Material test certificates (MTC) for bearing bars and cross bars
Bearing bar size and thickness measurement
Bearing bar and cross bar spacing checks
Panel dimensions and diagonal measurements
Weld point inspection
Panel flatness and deformation review
Banding and cut-outs verified against drawings
Zinc coating thickness per ASTM A123 / ISO 1461 or customer standard, verified by coating gauge reports
Surface appearance check
Packing, labels and panel numbering review

FAQ

Quality Documentation & Inspection FAQs

Do you provide inspection reports?

Yes, when the required report set is included in the quotation or order requirements. Dimensional results, coating-thickness readings and relevant material certificates can then be supplied in the agreed document package.

What does your ISO 9001 certification cover?

The quality management system for the manufacture and sales of wire mesh and metal fence products, certified to ISO 9001:2015.

Can third-party inspection be arranged?

Yes — third-party inspection can be coordinated before shipment when the project requires it; tell us at quotation stage so it is scheduled into production.

Which standards can you inspect against?

Products can be manufactured and tested against the project-specified edition of NAAMM MBG 531/532, ASTM A123/A123M, ISO 1461 or another agreed specification. Where required, coating readings are reported against the agreed order criteria.

Does quality control cover load capacity?

QC verifies that every panel matches the agreed specification and drawings — bar size, spacing, welds and finish. Suitability for a given span and load is confirmed at specification stage, before production, against span, load type and support conditions.