HS Code for Quartz glass tubes

Quartz glass tubes, consisting of unworked fused silica or fused quartz, are classified under Chapter 70 of the Harmonized System. Heading 7002 covers glass in balls, rods, or tubes, provided they are unworked. Subheading 7002.31 is the specific code for tubes made of fused quartz or other fused silica. This classification applies to the raw material form of the glass before it has been further processed into specific laboratory instruments, lighting components, or consumer goods. The 'unworked' status is critical; according to the Explanatory Notes to the HS, this means the tubes have not been subjected to any process after manufacture other than simple cutting to length or grinding of the ends to make them smooth. If the tubes have been bent, sealed, or otherwise manipulated into a finished product like a beaker or a test tube, they would move to a different heading. The classification is based on the geometric shape (tubular) and the chemical composition of the glass, specifically requiring a high silica content that characterizes fused quartz.

Products Included

• Unworked fused silica tubing
• Raw quartz glass cylinders
• Clear quartz tubes for industrial processing
• Opaque quartz tubes (unworked)
• Capillary quartz tubes in bulk lengths

Common Misclassification

The most frequent misclassification involves confusing quartz tubes with tubes made of other types of glass, such as borosilicate glass, which falls under HS code 7002.32. Another common error is classifying worked quartz tubes (e.g., those with ground joints or specific laboratory fittings) under this code; such items should be classified under HS code 7017.10 as laboratory glassware. Additionally, quartz tubes used as heating elements with electrical components should be classified in Chapter 85.

FAQ

What is the HS code for Quartz glass tubes?

The HS code for unworked tubes of fused quartz or other fused silica is 7002.31.

What if the quartz tube is used for a UV lamp?

If the tube is merely the raw material for the lamp, it is 7002.31. If it has been processed into a lamp envelope with electrodes, it is classified under HS code 8539 as part of an electric lamp.