Of other glass having a linear coefficient of expansion not exceeding 5 x 10-6 per Kelvin within a temperature range of 00C to 3000C
Unworked glass tubes, low thermal expansion coefficient
HSN 7002 32 00 (unworked glass tubes with a linear coefficient of expansion not exceeding 5×10⁻⁶ per Kelvin within 0°C to 300°C) is not covered by a Bureau of Indian Standards Quality Control Order and carries no Partner Government Agency clearance requirement at the tariff-line level. Import follows the standard customs procedure: Importer-Exporter Code, bill of entry, commercial invoice, packing list. Other glass products within Chapter 70 — including worked glass tubing, glass fibres, or safety glass — may fall under tariff lines that do carry compliance; accurate classification of the product's form and processing state is the principal importer risk.
The absence of compliance at this tariff line applies specifically to unworked tubes of low-expansion glass; glass in balls, rods, or tubes that have been worked, or glass destined for laboratory, pharmaceutical, or construction end-uses, may be classified elsewhere within Chapter 70 and attract distinct compliance obligations. Re-classification on customs examination triggers retrospective compliance, including detention pending the applicable licence or certification. The product's form, processing state, and intended application should be documented precisely before relying on the absence of compliance at this line.