Plastic Rebar Spacers

Plastic rebar spacers hold reinforcing steel at the precise distance required from formwork before concrete pouring. Correct positioning maintains specified concrete cover, preventing internal steel exposure, corrosion, and structural failure under load.

Made from high-density polyethylene (HDPE) or polypropylene (PP), these spacers replace traditional cement blocks and wire chairs. Their non-corrosive, non-conductive composition eliminates rust pathways to the concrete surface, while integrated locking clips secure bars directly to reduce labor setup times.

Point-Contact Base Design: Reduces surface contact with external formwork to prevent visible imprints after form removal.

Snap-In Locking Clip: Holds rebar sizes #3 through #8 (10mm to 25mm) without requiring tie wire.

High Load Capacity: Withstands foot traffic and heavy aggregate drops without collapsing or deforming prior to pour completion.

Non-Corrosive Polymer: Eliminates micro-cracks and spalling driven by rusted metal-chair feet.

Concrete Compatibility: Polymer thermal expansion coefficient aligns closely with cured concrete to prevent interfacial voids.

ASTM C260 / C494 Compliance: Materials perform without releasing chemicals that alter concrete hydration or setting times.

BS 7973-1:2001 (UK/EU Standard): Meets requirements for load capacity, stability, and concrete cover tolerances.

CRSI (Concrete Reinforcing Steel Institute) Class 1 & 2: Certified for exposed finish or non-corrosive concrete element requirements.

REACH / RoHS Compliant: Free of hazardous heavy metals or recycled contaminants that reduce plastic impact resistance.

Precast Concrete Yards: Wall panels, double-T beams, hollow-core slabs, culverts, and utility vaults.

Cast-in-Place Structures: Slabs-on-grade, elevated floor decks, suspended slabs, foundation footings, and grade beams.

Civil Infrastructure: Bridge decks, retaining walls, highway barrier rails, and tunnel linings.

Pre-stressed Concrete: Girders and structural beams requiring tight rebar positioning tolerances.

Match Cover Depth: Select spacer height matching specified cover requirement on structural drawings.

Determine Spacing Interval: Place spacers along rebar at 0.8 m to 1.0 m intervals along parallel bars; maintain maximum 0.6 m spacing along perimeter edges.

Snap onto Bar: Push the spacer clip perpendicular to rebar until the locking latch fully engages.

Formwork Placement: Position assembly against formwork or subbase, verifying point-contact feet rest flat without canting.

Pre-Pour Inspection: Confirm spacers remain snapped in place after walking grids and placing pump hoses.

Compressive Load Testing: Batch samples subjected to point-load compression testing at room and elevated temperatures to verify deformation thresholds.

Dimension Tolerance Verification: Caliper measurement across clip inner diameter (+/- 0.2 mm) and cover height (+/- 0.5 mm).

UV Weathering Test: Accelerated xenon-arc exposure testing to evaluate embrittlement resistance during extended job site storage.

Impact Resistance Test: Drop-weight tests performed at low temperatures (-10 deg C) to prevent brittle fracture during winter site handling.

Packaging Options: Standard bulk cartons (500 to 2,000 pcs/box) or woven bag packaging stacked on heat-treated ISPM-15 wooden pallets.

Custom Height/Profiles: OEM tooling service available for non-standard cover dimensions or heavy-duty load profiles within 20 to 25 days.

Custom Color Marking: Batch color identification or branded logo molding available for large distribution orders.

Logistics Capacity: Full container load (FCL) shipping available directly from factory port.

To receive an accurate quotation and technical recommendation, provide:

Required Concrete Cover: Specific thickness (e.g., 25mm, 50mm, 75mm).

Rebar Size Range: Minimum and maximum rebar diameter (e.g., #4 to #6 / 12mm to 20mm).

Application Type: Cast-in-place slab, vertical wall formwork, or precast plant manufacturing.

Target Quantity: Unit counts per size or annual container volume.

Destination Port: Required incoterms (FOB, CIF, DDP) for freight calculation.

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