7002.39.00 - Other

This HTS category, 7002.39.00, specifically addresses "Other" unworked glass tubes. It serves as a residual classification for glass tubes that do not meet the specific material or thermal expansion criteria outlined in its sibling categories. Therefore, this category is for glass tubes whose composition or coefficient of expansion falls outside the specifications for fused quartz, fused silica, or glass with a low linear coefficient of expansion.

Unlike its sibling categories, 7002.31.00.00 (Of fused quartz or other fused silica) and 7002.32.00.00 (Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Kelvin within a temperature range of 0˚C to 300˚C), this classification captures a broader range of glass tube materials and properties. The defining characteristic is the exclusion from those more specific provisions.

This category is further subdivided to provide more granular classification based on length. Subcategory 7002.39.00.10 covers glass tubes not exceeding 200 mm in length, while 7002.39.00.90 encompasses all other glass tubes that fall under the general "Other" description and do not meet the length criteria of the preceding subcategory. This distinction aids in accurately accounting for different sizes of unworked glass tubes.