Product classification
HS code for Fiberglass yarn: 7019.13
Glass fibres, (including glass wool), yarns and slivers.
Classification of fiberglass yarn under HS 7019.13
Fiberglass yarn is classified under HS code 7019.13. This classification applies to glass fibers that have been processed into yarns or slivers. Unlike rovings, fiberglass yarns typically possess a twist, which provides the structural integrity needed for weaving or knitting into fabrics. The Harmonized System distinguishes between different forms of glass fiber based on their mechanical processing. Heading 7019 covers the broad category, while 7019.13 specifically targets "yarns and slivers." Slivers are untwisted strands of glass fibers, often shorter than continuous rovings, while yarns are the twisted counterparts. This code is essential for textile manufacturers who import glass fiber for the production of fire-resistant clothing, industrial curtains, or electronic-grade glass cloth. The classification is determined by the presence of a twist (measured in turns per meter) and the linear density of the yarn. Customs documentation often requires the specification of the filament diameter and the number of plies to confirm the 7019.13 designation. This code ensures that the material is recognized as a textile-grade input rather than a bulk reinforcement material.
- Covers
- Single twisted glass yarns
- Plied or cabled glass yarns
- Texturized glass yarns
- Glass fiber slivers
- Electronic grade (E-glass) yarns
- Also under 7019.13
- Vitrulan glass yarns
- Ahlstrom-Munksjö glass fiber textiles
- Porcher Industries glass yarns
- SGL Carbon glass fiber fabrics
Codes often confused with 7019.13
Common mistake. The most frequent misclassification is with fiberglass rovings under 7019.12. As noted, the presence of a twist is the deciding factor. Another common error is classifying glass yarn under 7019.11, which is for chopped strands. If the yarn has already been woven into a mesh or fabric, it should be classified under 7019.61 through 7019.69. Additionally, if the yarn is coated with plastic to the extent that it takes on the character of a plastic article, it might be challenged under Chapter 39, though 7019.13 remains the standard for most industrial glass yarns.
Top exporters and importers of HS 701913 (the code used for fiberglass yarn), 2025
In 2025, the largest exporter of HS 701913 (the code used for fiberglass yarn) in UN Comtrade data was Taiwan, with about 24% of world exports; the largest importer in UN Comtrade data was the United States, with 21% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 701913, not only fiberglass yarn.
Top exporters 2025 · share of world exports
- 1 Taiwan* ~$127M 24% of world exports · partner records ↗
- 2 China $71M 13% of world exports
- 3 United States $70M 13% of world exports
World total: $536M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $121M 21% of world imports
- 2 Japan $74M 13% of world imports
- 3 Germany $55M 9.7% of world imports
World total: $565M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. UN Comtrade records Taiwan as "Other Asia, not elsewhere specified". Saudi Arabia's exports under that code are left out: they are far too large to be trade with Taiwan, so mostly undisclosed partners. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for fiberglass yarn
Brazil classifies fiberglass yarn under NCM 7019.13.00: HS 7019.13 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about fiberglass yarn
What is the HS code for Fiberglass yarn?
The HS code for Fiberglass yarn is 701913 (Glass fibres; (including glass wool), yarns and slivers). The correct HS code for fiberglass yarn and slivers is 7019.13.
How do I classify Fiberglass yarn for customs?
Fiberglass yarn is classified under HS code 701913 — Glass fibres; (including glass wool), yarns and slivers. This is a 6-digit subheading level code.
Can fiberglass yarn be used for 3D printing?
While glass fibers are used in 3D printing filaments, the yarn itself (7019.13) is a textile input. If it is embedded in a plastic filament, it is usually classified under Chapter 39.
Which countries are the top exporters of fiberglass yarn (HS 701913)?
In 2025, the top exporters of HS 701913 (the code used for fiberglass yarn) in UN Comtrade data were Taiwan (about $127M, 24% of world exports), China ($71M) and the United States ($70M). World exports came to about $536M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of fiberglass yarn (HS 701913)?
In 2025, the top importers of HS 701913 (the code used for fiberglass yarn) in UN Comtrade data were the United States ($121M, 21% of world imports), Japan ($74M) and Germany ($55M). World imports came to about $565M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Fiberglass yarn the same in all countries?
The base HS code 701913 for Fiberglass yarn is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for fiberglass yarn in Brazil?
In Brazil, fiberglass yarn (HS 701913) is classified under NCM 7019.13.00.