Glass fibre (roving, CSM, woven) sourcing guide
Glass fibre is the reinforcement of composites; E-glass is the most common type. Product form (roving, chopped strand mat, woven roving), tex, areal weight and resin-compatible sizing (polyester, vinyl ester, epoxy) drive selection. Boatbuilding may require class type approval.
Updated October 11, 2026
Quick facts
- HS code
- 7019.12 / 7019.31
- Common grades
- E-glass direct roving, assembled roving, chopped strand mat (CSM), woven roving, ECR
- Standards
- ISO 2078, DNV/Lloyd's type approval for marine
Overview
Glass fibre is the reinforcement of composites; E-glass is the most common type. Product form (roving, chopped strand mat, woven roving), tex, areal weight and resin-compatible sizing (polyester, vinyl ester, epoxy) drive selection. Boatbuilding may require class type approval.
Typical applications
- Boat and yacht hulls
- wind turbine blades
- FRP pipes and tanks
- automotive parts
- building panels and rebar
Specifications to agree with your supplier
When buying Glass fibre, agree in writing on the grade, applicable standard, packaging, delivery term (Incoterm) and acceptance criteria. Ask for a certificate of analysis (COA) for every lot, the technical data sheet (TDS) and, where relevant, the safety data sheet (SDS).
How to source reliably
Work with verified (KYC) suppliers, request samples and a trial lot before large volumes, use independent inspection (SGS, Bureau Veritas, etc.) and tie payment terms to shipping milestones. The platform deal room keeps offer history, the digital contract and delivery steps on record in one place.
Transport, storage & customs
Customs usually classify Glass fibre under HS heading 7019.12 / 7019.31; always confirm the exact code in your importing country’s tariff. Store the goods dry, protected from moisture and direct sunlight with packaging intact, and ask for loading photos and the bill of lading (B/L) before shipment.
Frequently asked questions
What is the HS code for Glass fibre?
It is usually classified under heading 7019.12 / 7019.31. The sub-heading depends on form and purity — confirm it in your importing country’s customs tariff.
How do I find a reliable Glass fibre supplier?
Prefer suppliers with the verified badge, a high trust score and completed deals. For large volumes, post a buying request to compare several offers and sign the contract in the deal room.
Can I buy small quantities as well?
Yes. For samples and small quantities you can message suppliers directly from the directory, free and commission-free. The deal room is designed for large, protected deals.
Current offers on the marketplace
Glass fibre roving (direct / assembled)
E-glass direct roving 2400 tex — pultrusion and winding
Min. order: 20,000 kg