Terms & Conditions

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Terms & Conditions of Sale

Peterson Manufacturing Limited · Version October 2026

1.Interpretation

  1. 1.1

    “Seller” means Peterson Manufacturing Limited.

  2. 1.2

    “Buyer” means the person, firm or company purchasing Goods or Services.

  3. 1.3

    “Goods” means all goods supplied by the Seller.

  4. 1.4

    “Contract” means any contract between the Seller and the Buyer for the sale of Goods and/or Services.

  5. 1.5

    “Force Majeure Event” means any event or circumstance beyond the reasonable control of the Seller which prevents or delays the performance of its obligations, including but not limited to acts of God, flood, tidal events, extreme or abnormal weather conditions, fire, explosion, war, terrorism, industrial disputes, interruption of utilities, supply chain disruption, shortage of materials or governmental action.

  6. 1.6

    “Insolvency Event” means, in respect of the Buyer, any of the following:

    1. (a)the Buyer is unable to pay its debts as they fall due within the meaning of section 570 of the Companies Act 2014;
    2. (b)the Buyer becomes insolvent or is deemed unable to pay its debts;
    3. (c)a petition is presented, a resolution is passed, or an order is made for the winding up or liquidation of the Buyer (otherwise than for the purposes of a solvent reconstruction);
    4. (d)an examiner, receiver, liquidator or similar officer is appointed over the whole or any part of the Buyer’s undertaking, assets or revenues;
    5. (e)the Buyer enters into or proposes any composition or arrangement with its creditors;
    6. (f)any step or event analogous to the foregoing occurs in any jurisdiction; or
    7. (g)the Seller reasonably believes that any of the foregoing is likely to occur.
  7. 1.7

    “Seller’s applicable visual inspection and acceptance standards” shall mean those standards as published on the Seller’s website on the date of order. View the current standards

2.Basis of Contract

  1. 2.1

    These Conditions shall apply to all Contracts to the exclusion of all other terms.

  2. 2.2

    No variation shall be binding unless agreed in writing by a director of the Seller.

3.Quotations and Orders

  1. 3.1

    Quotations are invitations to treat only.

  2. 3.2

    A binding contract arises only upon written acceptance by the Seller.

4.Price and Payment

  1. 4.1

    Prices are exclusive of VAT.

  2. 4.2

    Payment shall be made in full, without deduction or set-off, within 14 days of the date of the Seller’s invoice.

  3. 4.3

    Time for payment shall be of the essence.

  4. 4.4

    Without prejudice to any other rights of the Seller, any sum not paid by the due date shall bear interest from the due date until payment in full (whether before or after judgment) at the rate prescribed from time to time under the European Communities (Late Payment in Commercial Transactions) Regulations 2012 (as amended), together with any applicable fixed compensation and reasonable recovery costs.

5.Delivery and Risk

  1. 5.1

    Risk in the Goods passes on delivery.

  2. 5.2

    Delivery dates are estimates only.

6.Warranty (Limited) and Exclusions

  1. 6.1

    The Seller shall use reasonable skill and care in the manufacture and installation of the Goods.

  2. 6.2

    Subject to Clause 6.3, the Seller’s sole obligation is to repair or replace defective Goods.

  3. 6.3

    The Seller shall have no liability where:

    1. (a)Goods are misused or improperly installed by the Buyer or by third parties;
    2. (b)defects arise from Buyer specifications;
    3. (c)defects arise from abnormal conditions including unusual flood or tidal or atmospheric conditions and extreme weather events.
  4. 6.4
    Exclusion of Implied Terms

    Except as expressly provided, and to the fullest extent permitted by law, all warranties, conditions and terms implied by statute or common law (including fitness for purpose) are excluded.

  5. 6.5
    Extraordinary Climatic Events

    Without prejudice to Clause 6.4, the Seller shall have no liability whatsoever in respect of fitness for purpose, performance or durability of the Goods where any defect, failure or inadequacy arises from extraordinary climatic conditions, flooding, tidal events or any comparable environmental occurrence outside normal anticipated conditions.

7.Finishes, Coatings and Visual Acceptance

  1. 7.1

    Unless otherwise expressly agreed in writing by the Seller, finishes and coatings applied by the Seller shall be assessed in accordance with the Seller’s applicable visual inspection and acceptance standards in force at the date of manufacture.

  2. 7.2

    Where any finishing, coating, galvanizing or surface treatment is carried out by a third-party subcontractor, the applicable specification, industry standard, certification scheme and/or acceptance criteria of that subcontractor shall apply, unless an alternative requirement has been expressly agreed in writing by the Seller.

  3. 7.3

    Hot-dip galvanized Goods shall, unless otherwise expressly agreed in writing, be supplied in accordance with EN ISO 1461 and the applicable galvanizing subcontractor’s acceptance criteria.

  4. 7.4

    Where powder coating is subcontracted to provide a specified QUALICOAT-compliant coating system or associated warranty, the Goods shall be finished in accordance with the applicable specification, certification requirements and warranty conditions of the approved powder-coating subcontractor. Any such warranty shall be subject to the terms, conditions, exclusions, maintenance requirements and duration imposed by that subcontractor or warranty provider.

  5. 7.5

    The Buyer acknowledges that the Seller may subcontract galvanizing, powder coating and other specialist finishing processes. Compliance with the applicable third-party specification, certification scheme or acceptance criteria shall constitute compliance with the agreed finish requirement, subject to any specific requirement expressly accepted in writing by the Seller.

  6. 7.6

    The Seller shall not be deemed to provide any independent or additional coating warranty beyond the warranty expressly stated in the Contract. Where a third-party coating or finish warranty is provided, the benefit of that warranty shall be subject to the terms and limitations applicable to it.

  7. 7.7

    Where the Seller’s applicable standard classifies surfaces according to their visibility, aesthetic importance or function, the acceptance criteria for the relevant surface classification shall apply. Unless a particular classification is expressly agreed in writing, the Seller shall determine the appropriate classification having regard to the intended use and normal viewing position of the Goods.

  8. 7.8

    Visual inspection shall be carried out in accordance with the viewing distance, lighting, viewing angle, inspection time and other inspection conditions specified in the applicable visual inspection standard. A feature which is acceptable when assessed under those conditions shall not constitute a defect solely because it is visible upon closer inspection, under magnification, under exceptional lighting or from a different viewing angle.

  9. 7.9

    The Buyer acknowledges that galvanizing, powder coating, wet painting and other industrial finishing processes may naturally produce variations in colour, shade, gloss, texture, surface profile and general appearance. Such variations shall not constitute defects where they are permitted by the applicable specification or acceptance standard and do not materially impair the specified function or performance of the Goods.

  10. 7.10

    Minor orange peel, substrate profile or print-through, texture variation, minor runs, sags, drips, inclusions or other surface characteristics shall not constitute defects where they are permitted by the applicable visual inspection standard, subcontractor specification, certification scheme or acceptance criteria and do not materially affect the specified function, corrosion protection, structural integrity or performance of the Goods.

  11. 7.11

    Any specific colour, RAL reference, gloss level, coating system, dry film thickness, surface classification, architectural or aesthetic finish, approved sample, boundary sample, warranty requirement or other special finish requirement must be expressly stated in the Buyer’s order and accepted in writing by the Seller before manufacture or finishing. In the absence of such written agreement, the applicable standard finish and acceptance criteria shall apply.

  12. 7.12

    Samples, photographs, brochures, colour charts, electronic images and previously supplied Goods are illustrative only and shall not constitute an exact standard of colour, shade, gloss, texture or appearance unless expressly agreed in writing by the Seller as an approved reference or boundary sample.

  13. 7.13

    Goods which comply with the applicable specification, certification scheme, visual inspection standard and/or acceptance criteria shall not be considered defective, and the Buyer shall not be entitled solely on the grounds of visual or cosmetic appearance to reject such Goods, require replacement, withhold payment or make a claim in respect thereof.

  14. 7.14

    Where the Buyer specifies a particular finish, coating, treatment, certification or standard, the Seller shall not be responsible for the suitability of that requirement for the Buyer’s intended application unless the Seller has expressly accepted such responsibility in writing.

8.Limitation of Liability

  1. 8.1

    Nothing herein shall limit liability for death, personal injury or fraud.

  2. 8.2

    Subject thereto, the Seller shall not be liable for indirect or consequential loss, loss of profits, business or goodwill.

  3. 8.3

    The Seller’s total liability shall not in any case exceed the contract price.

9.Retention of Title

  1. 9.1

    Title to the Goods shall not pass until payment in full of:

    1. (a)the amount due to the Seller for any Goods and Services; and
    2. (b)all sums due from the Buyer to the Seller on any account.
  2. 9.2

    Risk passes on delivery notwithstanding retention of title.

  3. 9.3

    Until title passes, the Buyer shall hold the Goods as fiduciary bailee, store them separately and identifiably, and insure them for full value.

  4. 9.4

    The Buyer may resell the Goods in the ordinary course of business, provided the proceeds of sale are held on trust for the Seller.

  5. 9.5
    Recovery and Irrevocable Licence

    If payment is outstanding or an Insolvency Event occurs:

    1. (a)the Seller may require delivery up of the Goods; and
    2. (b)the Buyer irrevocably licenses the Seller, its employees and agents, to enter upon any premises (including third party premises) where the Goods are located, with or without notice, for the purpose of inspecting and recovering the Goods, and to remove the same.
  6. 9.6

    All such rights survive termination.

10.Retention

  1. 10.1

    No retention amount shall be deducted in any contract where the contract value is €50,000 or less (exclusive of VAT).

  2. 10.2

    Any contractual provision purporting to impose such retention shall be of no effect.

  3. 10.3

    For contracts exceeding that threshold, any retention must be expressly agreed in writing.

11.Insolvency

  1. 11.1

    If an Insolvency Event occurs:

    1. all sums become immediately due;
    2. the Seller may suspend or terminate supply;
    3. and its rights under Clause 9 apply.

12.Force Majeure

  1. 12.1

    The Seller shall not be liable for any failure or delay caused by a Force Majeure Event and its obligations shall be suspended for the duration of such event.

  2. 12.2

    Any time for performance shall be extended for a period equal to the duration of the Force Majeure Event together with a reasonable period for recommencement.

  3. 12.3

    The Seller shall use reasonable endeavours to mitigate the effects and shall notify the Buyer as soon as reasonably practicable.

  4. 12.4

    If the Force Majeure Event continues for more than 60 days, the Seller may terminate the Contract without liability.

13.Termination

  1. 13.1

    The Seller may terminate for breach or nonpayment.

  2. 13.2

    Termination shall not affect accrued rights.

14.Assignment

  1. 14.1

    The Seller may subcontract or assign its rights, duties and obligations.

  2. 14.2

    The Buyer may not assign any rights without the written consent of a director of the Seller.

15.Notices

  1. 15.1

    Notices shall be in writing and deemed received in the ordinary course of post or email.

16.Governing Law

  1. 16.1

    This Contract shall be governed by the laws of Ireland.

  2. 16.2

    The Irish courts shall have exclusive jurisdiction.

Visual Inspection & Acceptance Standards

Galvanising, Wet Paint & Powder Coating · Standards dated 12 August 2026

These are the Seller’s applicable visual inspection and acceptance standards referred to in Clause 1.7 and Clause 7 of the Terms & Conditions of Sale. Finishes and coatings are assessed against the standards in force at the date of manufacture.

Powder Coating Visual Inspection Standards

Section 1 of 3

Visual inspection of powder coating involves assessing the significant surface under diffuse daylight or standard lighting at defined distances based on the application type. The primary objective is to verify that the finish is uniform and free of defects that compromise performance or aesthetics.

Standard Inspection Conditions

ParameterStandard Requirement
LightingDiffuse daylight or a standard 40W equivalent fluorescent light source without direct glare.
Viewing AnglePerpendicular (90 degrees) to the test surface.
Interior Distance1.5 meters away from the target object.
Exterior Distance3 meters away from the target object (architectural parts).

Acceptance Criteria Classes

  • Class A (Aesthetic / High Visibility): Zero prominent flaws, uniform color/gloss, smooth texture, and highly controlled orange peel. Typically specified for consumer-facing or premium architectural components.
  • Class B (Semi-Critical / Moderate Visibility): Minor textural variations or slight cosmetic inconsistencies allowed in less noticeable areas.
  • Class C (Functional / Hidden): Prioritizes corrosion protection over appearance. Minor runs, pinholes, or color mismatches are acceptable for hidden functional components.

Common Surface Defects to Reject

  • Blisters & Craters: Raised spots or fisheyes caused by oil, moisture, or surface contamination.
  • Orange Peel: Excessive rough or bumpy texture surpassing approved Powder Coating Institute (PCI) visual standards.
  • Inclusions: Trapped dirt, dust, lint, or burnt particles embedded in the cured film.
  • Discontinuities: Pinholes, thin spots, sagging, or bare metal exposure that voids corrosion barriers.

Powder Coating over Galvanized Substrates

This document establishes the uniform testing environment, distance parameters, and surface acceptance criteria for the visual evaluation of architectural and industrial powder-coated hot-dip galvanized parts.

1. Inspection Environment & Methods

All visual evaluations must be executed under the following standardized conditions:

  • Viewing Distance (Exterior/Façade): 3 meters minimum from the significant surface.
  • Viewing Distance (Interior/General): 1.5 meters minimum from the significant surface.
  • Illumination Level: Diffuse natural daylight or artificial light providing 500 to 1000 lux. Avoid direct sun or blinding glare.
  • Observation Angle: Perpendicular (90 degrees relative to the test plane).
  • Evaluation Window: Defects must be readily visible without magnification from the stipulated viewing distance to be considered rejectable.

2. Surface Defect Classification Matrix

Defect TypeClassificationDescription & Field Actions
Blisters / Outgassing BubblesRejectableCaused by gas escaping the porous galvanized layer during thermal curing. Disrupts coating continuity.
Pinholes & HolidaysRejectableMicroscopic voids breaking completely through to the zinc layer, posing high corrosion risk. Requires strip and re-coat.
Craters & Fish EyesRejectableDepressions induced by local surface contaminants like oils, silicones, or shop dust prior to powder application.
Zinc Spikes & Ash ProtrusionsRejectableRough dross or spikes from the hot-dip galvanizing phase breaching the powder envelope. Must be mechanically ground flat before coating.
Runs, Sags, & DripsAcceptable*Zinc coating build-up or gravity sag during melting. Unacceptable on significant surfaces.
Orange Peel TextureAcceptable*Mild wave texture is inherent. Acceptable if it matches the pre-approved baseline reference limit panels.
Substrate Print-ThroughAcceptable*Faint visibility of underlying zinc spangle patterns is permissible provided specified dry film thickness (DFT) is verified.

Wet Paint Parts Visual Inspection Standards

Section 2 of 3

Visual inspection standards for wet-painted parts require controlled lighting (1,000–4,000 lux), a 45-degree viewing angle, and a fixed distance of 24 to 48 inches depending on the part class. Inspectors check for complete coverage, smooth consistency, and the total absence of critical defects within designated time limits.

1. Environmental and Setup Controls

  • Lighting: Use natural daylight simulation or calibrated overhead lamps producing 1,000 to 4,000 lux.
  • Distance & Time: Inspect Class A (critical) parts at 24 inches for 10 seconds; inspect Class C parts at 48 inches for 3 seconds.
  • Angle: Position the part or eye at a 45-degree angle to catch surface reflections and gloss variances.

2. Quality Classification Matrix

Defect CategoryClass A (Critical / High Visibility)Class C (Low Visibility / Hidden)
Runs, Sags, & DripsZero tolerance for visible micro-tears or heavy sagging.Acceptable if within functional tolerance limits.
Blisters & PinholesZero tolerance. Complete structural rejection.Limited microscopic occurrences allowed if sealed.
Dirt, Dust, & InclusionsZero foreign particle inclusions on visible faces.Limited small specks allowed on non-visible areas.

3. General Acceptance Criteria

  • Orange Peel & Texture: Evaluated against approved visual boundary master panels or physical roughness scales.
  • Coverage & Hiding: Complete, uniform coating of the substrate with no shadow-through, thin spots, or missed edges.

Wet Paint Coating on Galvanized Substrates

Scope: This document outlines the mandatory quality control checkpoints and acceptance criteria for the visual inspection of liquid coatings applied to hot-dip galvanized steel components.

1. Pre-Paint Galvanized Surface Check

Before any liquid coating is applied, the galvanized profile must be strictly verified to ensure complete coating adhesion and avoid premature failure modes like peeling or osmotic blistering.

  • Zinc Condition Assessment: Inspect for and mechanically remove any sharp zinc spikes, heavy dross lumps, rough zinc drips, or flux residues by careful grinding, filing, or scraping.
  • Surface Contamination: Verify the absolute absence of hydrocarbon oils, processing grease, workshop dirt, and zinc oxidation products (white rust / wet storage stains). Surface must be chemically clean.
  • Surface Profile Verification: Ensure mandatory mechanical profile creation via sweep blasting (using non-metallic mineral abrasives) or chemical pretreatments (e.g., T-wash mordant solution). This process must provide a uniform matte profile without breaching or excessively stripping the underlying protective zinc layer.

2. Wet Paint Visual Defects & Acceptance Criteria

The liquid-applied film layer must display flawless structural continuity. The following inspection matrix defines the defect criteria during wet and early-curing phases:

Inspection ParameterVisual Defect DescriptionAcceptance Status
Coverage & ContinuityThin spots, pinholes, missed areas, or underlying zinc substrate showing through the coating.Reject
Must achieve 100% complete visual hiding power.
Surface ImperfectionsCratering, active bubbling, severe solvent blistering, wrinkling, or fish-eyes due to contamination.Reject
Any break in film integrity requires repair.
Application FlawsExcessive paint sagging, heavy fluid runs, deep drips, or pronounced orange-peel textures.Reject if exceeding specified dry film thickness or causing aesthetic defects.
Adhesion ScreeningEarly structural blistering, micro-cracking, or checking over the galvanized substrate profile.Reject
Mandates immediate cross-hatch testing (ASTM D3359).

Galvanising Specification – EN ISO 1461

Section 3 of 3 · Surface features that meet and do not meet the specification

The following reference photographs illustrate surface features that commonly occur on hot-dip galvanized steel. Each is classified as meeting or not meeting EN ISO 1461, with the typical cause (Feature) and the recommended remedy or preventative measure (Action).

Meets EN ISO 1461

15 features
Zinc Ash - example of acceptable galvanized finishZinc Ash - example of acceptable galvanized finish
Zinc AshDesign/Process Issue
Meets EN ISO 1461provided a coating is present beneath the ash
Feature
  • Ash deposit and entrained ash
  • 1. Poor design has created air lock where ash has trapped
  • 2. Ash reformed after skimming the bath surface and become entrained within the coating
Action
  • Avoid trapped ash by provision of a vent hole
  • Movement of work in the galvanizing bath may prevent ash becoming trapped
  • Avoid entrained ash by improved skimming practice at the galvanizing bath (may not be 100% effective)
Weld Seepage Staining - example of acceptable galvanized finish
Weld Seepage StainingEnvironmental Issue
Meets EN ISO 1461
Feature
  • Weld seepage stain
  • Pretreatment chemicals become trapped in weld pin holes and are dried out by the heat of the galvanizing process leaving a residue
  • Moisture drawn into the pin hole after galvanizing resulting in residue dissolving and seeping out staining the steelwork
Action
  • No process related action can prevent weld seepage
Snailing - example of acceptable galvanized finish
SnailingMaterial/Process Issue
Meets EN ISO 1461
Feature
  • Snailing - textured finish with rivulets of zinc running around the CHS
  • Variation in steel chemistry across the surface results in variable coating growth
  • May be exacerbated if work is withdrawn quickly and/or at a shallow angle
Action
  • Ensure work is withdrawn slowly at a steep angle to aid the drainage of zinc
  • Even following best practice snailing can still occur
Zinc Build-up - example of acceptable galvanized finishZinc Build-up - example of acceptable galvanized finish
Zinc Build-upDesign Issue
Meets EN ISO 1461
Feature
  • Area of zinc build-up due to drainage of zinc during withdrawal from the galvanizing bath
  • Poor design has created a zinc trap
Action
  • Advise customer of need for drainage holes or to crop the corners of stiffeners to aid the drainage of zinc and avoid zinc traps
Swarve Staining - example of acceptable galvanized finish
Swarve StainingEnvironmental Issue
Meets EN ISO 1461
Feature
  • Steel has been cut nearby the galvanized product and swarve has embedded into the galvanized coating
  • Swarve may rust giving the appearance of the galvanized coating having failed
Action
  • Can remove staining by wire brushing
Entrained Dross - example of acceptable galvanized finish
Entrained DrossProcess Issue
Meets EN ISO 1461provided not on a critical surface
Feature
  • Entrained dross in the coating due to floating dross
  • Floating dross caused by disturbance of the bottom dross layer or due to bath composition resulting in low density dross
Action
  • Ensure work is not lowered too far into the bath so disturbing the dross layer
  • Control bath composition especially %Al to prevent low density floating dross
  • Stop processing work and allow dross to settle to the bottom of the bath
Wet Storage Stain - example of acceptable galvanized finish
Wet Storage StainEnvironmental Issue
Meets EN ISO 1461provided coating beneath meets the local average coating thickness requirement
Feature
  • Formed due to galvanized product becoming damp and being unable to fully dry out
Action
  • Store indoors
  • Orientate work so water traps are not formed
  • Ensure work is stacked at an angle to aid water run-off
  • Ensure work is not stacked tightly together
  • Do NOT shrink wrap work
Double Dip Mark - example of acceptable galvanized finishDouble Dip Mark - example of acceptable galvanized finish
Double Dip MarkProcess Issue
Meets EN ISO 1461
Feature
  • Double dip mark formed due to double dipping because work will not fit into the galvanizing bath in a single immersion
  • Temperature differentials formed with one end cooling while the other is heating-up affect the coating’s appearance
Action
  • Ensure best practice is followed when double dipping with work being turned in between dips so as to minimise the area of overlap
Flame Cut Edge - example of acceptable galvanized finish
Flame Cut EdgeFabrication Issue
Meets EN ISO 1461
Feature
  • Edge of steel has been flame cut
  • Flame cutting may deoxidise the steel surface giving a lower or variable silicon content and reactivity
  • Can result in a textured finish and/or a coating thickness which is below standard requirement
Action
  • Fabricator should grind the flame cut edge prior to sending work for galvanizing
  • No process related solution
Mechanical Damage - example of acceptable galvanized finish
Mechanical DamageMaterial/Process Issue
Meets EN ISO 1461provided the affected area may be repaired
Feature
  • Damage due to heavy impact especially at corners and edges
  • More likely if a thick coating has been formed
Action
  • Minimise handling
  • Try to avoid metal to metal contact
  • Handle with a level of care and do not abuse the product
  • Use plastic straps rather than chains where possible
Colour Variation - example of acceptable galvanized finishColour Variation - example of acceptable galvanized finish
Colour VariationMaterial Issue
Meets EN ISO 1461
Feature
  • Variation in coating appearance
  • Steel with a higher silicon content may result in continued growth of the zinc-iron alloy layer following withdrawal from the galvanizing bath
  • Retained heat may act as a driving force even at lower silicon levels
  • If the zinc-iron alloy layer is visible at the coating surface it appears duller, darker grey in appearance
Action
  • Use of nickel in the galvanizing bath may help reduce reactivity effect
  • Quenching work immediately after galvanizing can remove retained heat
Tree Bark - example of acceptable galvanized finish
Tree BarkMaterial Issue
Meets EN ISO 1461
Feature
  • Localised variation in steel chemistry affects surface reactivity
  • Localised areas with high %Si are more reactive and form a thicker coating resulting in a textured orange peel or tree bark coating
Action
  • Advise customer to minimise potential by using steel with a controlled silicon content (< 0.04% or 0.15-0.25% Si)
Timber Staining - example of acceptable galvanized finish
Timber StainingEnvironmental Issue
Meets EN ISO 1461
Feature
  • Staining occurs from damp timber
  • Use of timber to avoid metal to metal contact is good practice
Action
  • Staining may be removed by wire brushing
Steel Defect - example of acceptable galvanized finish
Steel DefectSteel Issue
Meets EN ISO 1461
Feature
  • Steel defects rolled into the steel surface and not visible to the naked eye
  • The heat of the galvanizing process causes defects to expand and become more apparent
  • Zinc may get beneath the defect forming a coating so the defect is raised up proud of the steel surface
  • Due to poor steel quality
Action
  • Grind out the steel defect and repair
  • No process related solution
Uneven Drainage - example of acceptable galvanized finish
Uneven DrainageProcess Issue
Meets EN ISO 1461
Feature
  • Uneven drainage results in an uneven or lumpy area on which zinc build up has occurred
  • This can occur over the entire surface or in isolated areas. Uneven drainage also includes drips on the ends of parts, runs near holes. A cause may be high withdrawal speed and/or the galvanizing temperature being too low
Action
  • This condition does not adversely affect coating performance and is acceptable

Does not meet EN ISO 1461

10 features
Wire Marks - example of unacceptable galvanized finish
Wire MarksProcess Issue
Does not meet EN ISO 1461
Feature
  • Wire mark
  • Wires used for jigging contact with work during dipping preventing a coating from forming
  • Wires are left on work after the product has cooled and tear the coating when removed
Action
  • Movement of work in the galvanizing bath should assist in a continuous coating being formed
  • Remove wires as soon as is practically possible after galvanizing
  • Repair wire marks if sufficiently small
Oil Contamination - example of unacceptable galvanized finish
Oil ContaminationMaterial Issue
Does not meet EN ISO 1461
Feature
  • Surface contaminant present on steel surface which could not be removed by the normal pretreatment process e.g. oil/grease
Action
  • Ask fabricator to avoid contamination of work for galvanizing with oil/grease
  • Use of a degrease tank might remove light oil or grease
Paint Marking - example of unacceptable galvanized finish
Paint MarkingMaterial/Process Issue
Does not meet EN ISO 1461
Feature
  • Work delivered to the galvanizing in an unsuitable condition for processing
  • Paint ID not removed prior to galvanizing
Action
  • Advise fabricator to use a water based or water soluble marker for ID of work which may come off in the normal pretreatment process
  • Remove paint by use of paint stripper or grinding prior to processing work
Sharp Striation - example of unacceptable galvanized finish
Sharp StriationMaterial Issue
Does not meet EN ISO 1461
Feature
  • Stress in the steel surface has affected reactivity
  • Areas of increased reactivity following the stress pattern result in increased coating growth as sharp striations around the diameter of the bar
Action
  • Advise fabricator that steel is not suitable for galvanizing
  • Can lightly grind to remove striations
  • No process related solution
Flux Staining - example of unacceptable galvanized finish
Flux StainingProcess Issue
Does not meet EN ISO 1461
Feature
  • Flux staining may result in rapid local attack on the coating if it becomes damp
Action
  • Quenching work may help to remove flux staining
  • Flux staining should be removed manually before delivery of work
Chain Marks - example of unacceptable galvanized finish
Chain MarksProcess Issue
Does not meet EN ISO 1461
Feature
  • Small uncoated areas
  • Where a chain is used to jig heavy work chain links have remained in contact with work during processing
Action
  • Movement of work in the galvanizing bath may assist formation of a coating
  • Repair chain marks if sufficiently small
Label Mark - example of unacceptable galvanized finish
Label MarkMaterial/Process Issue
Does not meet EN ISO 1461
Feature
  • Uncoated area due to use of an adhesive label on black steelwork
  • Label not removed before galvanizing or adhesive from label not removed from steelwork by the normal pretreatment process
  • Results in an uncoated area
Action
  • Ask fabricator not to use adhesive labels
  • If adhesive labels are present remove them and clean the area manually to try and remove the adhesive
  • Repair area if sufficiently small (unlikely)
Weld Anti-Spatter Spray - example of unacceptable galvanized finish
Weld Anti-Spatter SprayFabrication Issue
Does not meet EN ISO 1461
Feature
  • Uncoated area adjacent to weld(s)
  • Oil based or silicone based weld anti-spatter spray used during fabrication and burnt onto the steel surface
  • Not visible to naked eye and prevents a galvanized coating forming
Action
  • Advise fabricator to use a water based or water soluble weld anti-spatter spray which will normally come off in the pretreatment process
  • Repair area if sufficiently small
Zinc Spike - example of unacceptable galvanized finish
Zinc SpikeProcess Issue
Does not meet EN ISO 1461
Feature
  • Sharp spike formed due to drainage of zinc following withdrawal from the galvanizing bath
Action
  • Ensure work is jigged to aid run-off of zinc
  • Fettle work to remove spikes prior to delivery
Air Lock - example of unacceptable galvanized finish
Air LockDesign Issue
Does not meet EN ISO 1461
Feature
  • Small uncoated area
  • Poor design resulting in an air-lock so zinc does not contact with the steel
  • Forms an uncoated area
Action
  • Advise fabricator to adequately vent work so as to avoid air-locks
  • Repair area provided sufficiently small
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Terms & Conditions of Sale together with the original issued standards document (T&C’s Standards for Galvanising, Wet Paint & Powder Coating, dated 12 August 2026) as a single PDF.