Galvanized vs PVC-Coated Gabion Baskets: What Buyers Should Compare

Aug.18.2026

How to specify the steel core, metallic coating, polymer layer, colour, inspection and repair without relying on a generic lifespan claim

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The choice between galvanized and PVC-coated gabion baskets is not simply metal versus plastic. A PVC-coated wire normally includes a steel core and a metallic protection layer beneath the polymer. Buyers need to specify each layer, how wire diameter is measured and which exposure conditions the system must address.

MaiFa's gabion range includes galvanized and PVC-coated product directions in both civil and landscape descriptions. The website does not provide one coating specification that should be applied to every order, so the quotation must identify the selected construction and evidence scope.

Comparison rule: compare the complete wire system: steel core, metallic coating, polymer material and thickness, finished diameter, edge/lacing wire, colour, damage repair and inspection. Do not compare only the words 'galvanized' and 'PVC coated.'

1. What MaiFa currently publishes

MaiFa publishes galvanized gabion boxes and PVC-coated options, including welded products. These options confirm product scope; order-specific coating mass, thickness and tests should be requested rather than assumed.

Specification area	Published evidence	RFQ action
Metallic finish	Galvanized wire appears throughout the range	State coating type and required evidence.
Polymer option	PVC-coated gabion products are listed	Define substrate, polymer, colour and finished diameter.
Construction	Woven and welded families are separate	Confirm whether the selected coating applies to all panels and connectors.
Sizes	Standard and custom size directions appear	Select dimensions by approved schedule.
Processing	Cutting, bending and welding are listed	Define protection/repair at processed areas.

2. Describe the exposure first

Tell the supplier whether the gabion will be used in dry landscaping, soil contact, freshwater, coastal spray, immersion, wet-dry cycles or abrasive flow. Also state design life expectations only as a project requirement supported by engineering and evidence, not as a blanket marketing statement.

3. Define diameter at each layer

For coated wire, three numbers may matter: bare steel diameter, diameter after metallic coating and finished diameter after PVC. If the quotation lists one number without a measurement basis, suppliers may be offering different steel quantities. The same clarification applies to lacing, edge and diaphragm wires.

4. Specify coating continuity and adhesion

Define the required condition at welds, bends, cut ends and connection points. For PVC, request the polymer type, nominal layer, colour and acceptance criteria for holidays, cracking or separation. For metallic coating, request the agreed test or certificate scope and sampling method.

5. Include connectors in the coating schedule

Spirals, clips, lacing wire and stiffeners may be manufactured differently from the main mesh. Require the quotation to state their material and coating. A highly protected panel paired with an unspecified connector set creates an avoidable weak point.

6. Protect coatings during packing and installation

Polymer layers can be damaged by sharp edges, dragging and compressed contact points. Metallic coatings can also be abraded. Ask for separators, bundle protection, lifting instructions and an agreed field-repair method. Inspect high-contact areas after delivery and assembly.

7. Compare total scope, not only unit price

A coated option may include different finished wire diameter, package volume or connector treatment. Normalize the basket schedule, core wire, mesh, diaphragms, connections, coating evidence, packing and inspection before evaluating price.

Buyer control checklist

A useful procurement file separates the supplier's published range from the exact configuration being ordered. The following controls should be completed before price comparison or purchase-order release.

Describe soil, water, chloride, abrasion and ultraviolet exposure.
State bare/core and finished wire diameter measurement bases.
Define metallic coating and polymer layer separately.
Apply the coating schedule to panels, diaphragms, lids and connectors.
Agree inspection records and repair procedures before production.
Require packing that limits coating abrasion and deformation.

Pre-shipment inspection points

Inspection should follow the approved drawing, purchase order and agreed sampling plan. A visual check alone cannot confirm every material or coating requirement, and product inspection does not replace project-specific engineering or local approval.

Check documentation against the selected coating route and wire schedule.
Measure representative core/finished diameters using the agreed method.
Inspect welds, bends, edges, connectors and contact points for coating damage.
Verify polymer colour and surface consistency against the approved sample where relevant.
Confirm repair materials and instructions are included if specified.

What to include in the quotation

Quotation section	Required information
Exposure	Project environment, water/soil contact, abrasion and expected maintenance.
Wire system	Steel core, metallic coating, PVC/polymer layer, colour and diameter basis.
Basket schedule	Construction type, size, mesh, diaphragms, lids and quantities.
Connectors	Material/coating for lacing, spirals, clips, stiffeners and spares.
Quality/packing	Evidence, sampling, visual acceptance, repair, separators and bundle protection.
Commercial	Normalized price unit, Incoterm/named place, schedule, payment and written warranty scope.

How to compare supplier offers on one basis

Build a bid-comparison sheet before reviewing price. Give every offer the same rows for product geometry, materials, coating or finish, posts and connections, gates or accessories, drawings, samples, inspection, packing, quantity per commercial unit, package weights and delivery terms. Mark each response as included, excluded, optional or not stated. Where a supplier proposes an alternative, record the changed value and its effect on interfaces instead of treating it as equivalent automatically.

Commercial comparison should use the same Incoterm and named place, currency, quantity, package scope and document requirement. Separate factory price from freight, local tax, installation and project engineering. This method does not select the lowest quotation by default; it exposes omissions and gives the buyer a clear list of technical questions before sample approval or purchase-order release.

Copy-ready inquiry template

Please quote galvanized-only and PVC-coated alternatives for the same gabion basket schedule [attach]. State steel core diameter, metallic coating, finished diameter, PVC/polymer type and nominal layer, colour, mesh, all connector coatings, inspection evidence, repair method, unit weight and packing. Exposure is [soil/freshwater/coastal/abrasive]. Identify every difference between the two offers and quote [Incoterm] to [named place].

Frequently asked questions

Does PVC replace galvanizing?

Do not assume so. Ask the supplier to state the complete substrate and coating sequence.

Which wire diameter belongs in the RFQ?

State both the core and finished diameter where a polymer coating is used, plus the measurement tolerance.

Are all connectors PVC coated?

Only if the quotation says so. Connector material and finish should be listed separately.

Can a universal service life be promised?

No responsible comparison should ignore exposure, coating damage, fill, workmanship and maintenance.

What sample is most useful?

A representative mesh/connector sample showing the actual coating sequence, colour and edge condition.

Request a configuration-specific MaiFa quotation

Send MaiFa the application, dimensions, material and finish requirements, quantities, destination and document scope. Ask the quotation to repeat every selected value and identify any exception. This creates a traceable basis for samples, production, inspection, packing and later repeat orders.

Browse MaiFa's gabion box products. Review welded gabion box options.