About HS Code 700231
This specific HS code covers unworked glass tubes made from fused quartz or other fused silica. These materials are highly prized for their exceptional thermal shock resistance, high-temperature stability, and excellent optical transparency, particularly in the ultraviolet (UV) spectrum. Consequently, these tubes are critical components in high-tech industries such as semiconductor manufacturing, advanced laboratory equipment, UV sterilization systems, and specialized lighting applications. Importers and exporters are typically specialized glass manufacturers, high-tech component suppliers, and scientific instrument producers. The trade in these tubes is driven by the demand for materials that can withstand extreme conditions and provide superior optical performance, making them essential for precision and high-performance applications.
Products Under This Code
Fused quartz furnace tubes, fused silica lamp envelopes (unworked), quartz glass reaction tubes, UV sterilization lamp tubes (unworked), quartz glass optical waveguides, fused silica capillary tubes, quartz glass process tubes
Real World Examples
Heraeus Quartz, Shin-Etsu Quartz, Momentive Technologies, QSIL
Common Misclassification
Often confused with 700239 (other unworked glass tubes) if the specific material (fused quartz/silica) is not clearly identified, or 7011 (glass envelopes for electric lamps) if already processed into a finished lamp component.
Products Classified Under 7002.31
Industry
This code belongs to the Automotive & Vehicles industry.
Trade Overview
Japan, Germany, and China are leading exporters, while the USA, South Korea, and Taiwan are major importers due to high-tech industries.
Frequently Asked Questions
What is HS code 700231?
HS code 700231 covers: Glass; unworked, in tubes, of fused quartz or other fused silica. This specific HS code covers unworked glass tubes made from fused quartz or other fused silica. These materials are highly prized for their exceptional thermal shock resistance, high-temperature stability, and excellent optical transparency, particularly in the ultraviolet (UV) spectrum. Consequently, these tubes are critical components in high-tech industries such as semiconductor manufacturing, advanced laboratory equipment, UV sterilization systems, and specialized lighting applications. Importers and exporters are typically specialized glass manufacturers, high-tech component suppliers, and scientific instrument producers. The trade in these tubes is driven by the demand for materials that can withstand extreme conditions and provide superior optical performance, making them essential for precision and high-performance applications.
What products fall under HS code 700231?
Fused quartz furnace tubes, fused silica lamp envelopes (unworked), quartz glass reaction tubes, UV sterilization lamp tubes (unworked), quartz glass optical waveguides, fused silica capillary tubes, quartz glass process tubes
What are common misclassifications for HS code 700231?
Often confused with 700239 (other unworked glass tubes) if the specific material (fused quartz/silica) is not clearly identified, or 7011 (glass envelopes for electric lamps) if already processed into a finished lamp component.
How is HS code 700231 structured?
HS code 700231 is a 6-digit subheading under the Harmonized System. The first 2 digits (70) identify the chapter, digits 3-4 (02) identify the heading, and digits 5-6 (31) specify the subheading. This code is standardized globally by the World Customs Organization.