The document describes a plastic wheel spacer (WS) made from polypropylene for use in rebar construction, featuring an inferior cavity for rebar retention and multiple peripheral cavities for concrete flow. It has verified properties such as impact resistance of 62 J/m and a tensile strength of 14.6 MPa, making it suitable for separating rebar as specified by structural engineers. The spacers come in various sizes and weights, with import tariff codes for Mexico and Colombia provided.

1. TECHNICAL CHART WHEEL SPACER (WS)
Technical name: Plastic Wheel shaped spacers for rebar
Comercial name: Wheel Spacer (WS)
Description: Rebar spacer made entirely out of polypropylene, with an inferior cavity for receiving
and retaining the metallic structure (rebar). Around its periphery there are several cavities so that
the poured concrete can flow easily trough the spacer involving it completely.
Properties: (All values verified by independent laboratories)
- Resistance to impact: 62 J /m
- Resistance to tension: 14.6 MPa
- Elongatión: 4.4%
- Resistance to flexion: 21.4 MPa
Uses: For separating rebar’s from the formwork to a previously specified distance by the structural
engineer. It can hold Steel rebar’s from 4mm thick to ½¨. It’s mostly used in the construction of
walls, piles, prefabricated concrete products and columns.
Import Tariff Code: 3925.90.99 (México), 3925.90.00.00 (Colombia)
Yield: Between 1 and 1.5 units per square meter built
Weight and dimensions:
Element Radius 25mm 30mm 35mm 38mm 50mm 60mm 75mm
Weight per unit (gr) 10 12 9 19 18 16 42
Units per Pack 2000 1000 800 500 500 500 200
Total weight (kg) 20 12 7.2 9.5 9 8 8.4