Direct Roving

Product Overview

Our Direct Roving is composed of continuous E‑CR or R‑glass filaments, bonded into single strands and wound onto bobbins for easy handling. These rovings are backed by 3B’s proprietary sizing that ensures excellent resin-to-glass bonding in various composite processes.

Key Benefits

• Ease of processing: Maximum flexibility on workshops and less inventory 

• High-speed impregnation: Ideal for pultrusion and filament winding setups 

• Superior corrosion resistance: Made from boron-free Advantex® (E‑CR) glass, engineered to resist aggressive environments 

• Multi-resin compatibility: Works well with polyester, vinyl ester, epoxy, and polyurethane resins 

• Fire and insulation qualities: Offers “high resistance to fire propagation” and strong insulation properties
  
  

Technical Highlights

• Glass Type: E‑CR (Advantex®) glass (ASTM D578 / ISO 2078 compliant)

• Sizing: Proprietary silane-based sizing for strong resin adhesion
  
  

Featured Variants

• SE 1010 – Designed for pultrusion; provides “2200–2500 MPa tensile strength and 81 GPa modulus” with ≤0.20% moisture

• R25H – Suited to filament winding and drinking water pipe production; offers high heat resistance and is potable-water approved 

• SE 2020 / SE 3030 – Optimised for epoxy systems, ideal for prepreg, pultrusion, filament winding, and non-crimp fabric production; excellent fatigue and shear performance.
  
  

Processing Applications

• Filament winding – production of pipes, tanks, poles (continuous or discontinuous strands)

• Pultrusion – ideal for high fibre content structural profiles

• Weaving/knitting – used in production of woven rovings, non-crimp fabrics & prepregs
  
  

Sustainability & Quality

• Environmentally friendly glass – boron-free E‑CR glass eliminates fluoride and boron pollutants

• Certified for potable water – e.g., R25H meets drinking water standards

• Thermal Stability: Delivers consistent performance in high-heat and flame-sensitive applications