You need to distinguish the specified serrations from unwanted zinc projections when galvanized grating arrives.
Agree the finished profile and inspection criteria before production, then check any surface correction against both the walking-surface requirement and the coating specification.
Define the surface you are ordering
Identify which bars must have serrated top edges. Put that information on the product drawing alongside the material and finish description.
Request the supplier’s profile detail for the offered product. Where your specification controls tooth dimensions or spacing, show the actual requirements and their agreed tolerances.
Keep overall bar depth separate from any dimension measured at the serration root.
Your inspector needs the same reference points used in the accepted product drawing.
If you do not have a prescribed profile, ask the supplier to identify its proposed standard profile.
Review that proposal before treating an unlabelled catalogue image as the acceptance reference.
Record whether you are approving a plain steel sample or the finished galvanized surface. Those samples represent different stages of supply and should remain distinguishable.
Keep structural acceptance alongside this surface review. A visual check of the teeth cannot replace the load and deflection evidence for your selected bearing-bar section.
Use a finished sample for the questions it can answer
If the finished appearance or local profile matters to your order, request a representative galvanized sample. Specify the construction and finishing process it should represent.
Mark the approved sample with its product reference and associated drawing revision. Retain photographs that show its identification as well as the walking face.
Discuss the extent of any sample approval.
You may be accepting the visible finish while leaving dimensions, coating measurements and slip-performance evidence to their own requirements.
Before approving the production order, obtain the supplier’s list of differences between your sample and the proposed panels. Record which differences you have accepted.
For inspection photographs, request a close view and a wider view of the same location.
Your reviewer should be able to connect a local feature to a particular bar and panel.
Avoid approving surface performance by walking on a loose sample. Use the evidence and assessment method required by your project for the intended service conditions.
Separate the steel profile from zinc left on the surface
At inspection, compare the repeated tooth pattern with your accepted drawing or sample. Identify irregular projections separately from the intended serrations.
Ask the galvanizer to assess suspected zinc drips or drainage spikes.
Excess zinc can form projections during withdrawal and drainage, so do not classify every sharp feature as a designed tooth.
Locate your finding on the panel: the walking face, an exposed edge, or another surface affecting handling or assembly.
For a feature that appears to bridge or obstruct an opening, record the affected geometry.
Ask the supplier to compare it with your agreed finished-opening requirement.
Assess the projection’s shape and its effect on your intended use against the inspection criteria. Coating colour alone cannot resolve that finding.
Where the inspector cannot distinguish deposited zinc from the underlying steel profile, request a technical assessment.
Avoid removing material merely to discover what the feature is.
Plan the coating measurements for the actual geometry
Ask your coating inspector to identify the measurement procedure and applicable acceptance specification. Keep that reference with the results for the supplied panels.
Have the inspector choose suitable measurement locations for the grating geometry and the method being used.
Do not invent a reading location on a sharp tooth simply because it is easy to point out.
Request the instrument and verification records required by the inspection procedure.
Your acceptance decision needs measurements obtained and interpreted under the applicable method.
Keep coating-thickness results separate from observations of the serrated profile.
A satisfactory result at one location does not resolve a different finding about an obstructed opening or projection.
If the order requires a particular inspection extent, identify the panels and locations covered. Record areas that remain inaccessible or need a different accepted approach.
Resolve missing or questionable measurements with your reviewer before release.
If a measurement is repeated, preserve the original observation and record why the repeat was needed.
Agree surface correction before work starts
When a finish irregularity needs correction, request the supplier’s proposed treatment. Identify the affected panel mark and the area to be worked on.
Distinguish removal of unwanted excess zinc from alteration of the serrated steel profile. Your accepted correction should preserve the specified product geometry.
Ask the fabricator and galvanizer to define the working method under the applicable requirements.
Do not issue a general instruction to grind the whole walking face smooth.
If the proposal would change a tooth or remove steel, send it for technical review.
Include any implications for the approved section and surface evidence in that review.
Record which inspections must follow the correction. Include both the finished profile and the coating condition where the work can affect them.
Where the supplier proposes local coating restoration, obtain the method and acceptance basis.
A touch-up operation needs its own specified scope and should not conceal an unresolved geometry finding.
Reinspect the worked area before closing the finding
Compare the corrected location with the accepted disposition. Confirm that the completed work corresponds to the area and method that were reviewed.
Repeat the dimensional or profile checks required by your inspection plan. Preserve the original results so the final record explains what changed.
Have the coating inspector assess the worked area under the applicable specification. Where restoration was required, include the repair records and final inspection result.
Keep photographs of the completed correction with the panel identification. You need the panel reference to distinguish similar pieces when reviewing close-up photographs.
If the correction creates another discrepancy, record it explicitly.
Do not close the original finding by overlooking a new profile or coating problem at the same location.
Route acceptance to the person responsible under your project procedure.
A workshop note stating that an area has been dressed is evidence of work performed, not the complete acceptance record.
Keep slip-performance claims within their evidence
If your purchase specification includes a slip-performance requirement, identify the evidence accepted for the proposed finished product.
Preserve the test or assessment conditions with the result.
Check the named surface and finish against the delivered configuration. Ask your reviewer to assess any material difference introduced by a proposed surface correction.
Do not infer improved walking performance from an irregularly rough coating.
An unwanted projection is not a substitute for the specified profile or a relevant performance assessment.
Describe the actual operating conditions when seeking a technical decision. Include expected contamination and the cleaning conditions that your project has identified.
Where the accepted evidence does not cover the proposed change, record that gap.
Request the required review instead of extending a result from another surface by appearance alone.
Retain the final decision with the product reference.
Give your receiving team the accepted product reference and decision, so a general anti-slip statement does not become their inspection instruction.
Check the finished edges and fitting locations
Review the panel perimeter as well as the walking face. Record projections or finish irregularities where they affect handling, seating or the specified installation clearance.
Compare banding and attachment details with the fabrication drawing. Keep any required top-level relationship visible in the inspection record.
At fixing locations, check that the proposed assembly can be installed as detailed.
Refer an obstruction for correction rather than forcing the hardware into an unintended position.
For adjacent panels, inspect the finished joint against the accepted layout. Your regular tooth pattern does not define the clearance between fabricated edges.
If a panel must be removed for access, check the relevant lifting or removal provisions against the accepted design.
Record finish-related interference before the piece reaches the installation area.
Where the remedy involves cutting or welding, reopen the fabrication and finish review for that work. Keep it separate from a limited local dressing instruction.
Protect the inspection result through delivery
Ask your supplier to retain panel marks during packing and dispatch.
Connect the released panels with the inspection and correction records supplied to your receiving team.
Include any specified protection for finished edges in the packing scope. Have the supplier identify the arrangement used for the particular panel shapes being shipped.
At receipt, inspect reported or visible damage against the dispatch record.
Keep new transit findings separate from finish corrections already completed and accepted at the factory.
If handling exposes a damaged area, record its location before arranging repair. Use the agreed technical process for the coating and profile involved.
Preserve the accepted sample and final product detail for later replacement orders. Give your maintenance team the actual surface reference with the purchase description.
Questions to resolve before accepting the finish
Is every sharp projection part of the serration?
You should compare the feature with the specified repeating tooth profile.
Ask the supplier to assess irregular deposits separately, particularly where zinc drainage has left a projection.
Record the panel and location before correction.
Use the agreed finish criteria and inspection process to decide the disposition, rather than assuming that any rough feature contributes to the intended walking surface.
Can you remove a finish defect by grinding the teeth?
You should request a defined correction that preserves the approved steel profile. Distinguish unwanted zinc from the underlying tooth geometry before work starts.
If the proposal changes the steel section or specified surface, obtain the required technical review.
Reinspect the worked area for both profile and coating acceptance before closing the finding or releasing the panel.
Does a coating-thickness pass prove the surface is acceptable?
You should keep thickness measurements and surface observations as separate acceptance items.
A coating result does not automatically address unwanted projections, blocked openings or a changed tooth profile.
Check each item against its applicable requirement.
Retain the final coating report and any profile or correction records under the same panel identification so your release package covers the complete finding.
Request a defined finished-surface submission
Review your serrated steel grating options, then send the required finish and profile detail.
Include the sample, inspection and correction records you need before shipment.
