Chapter 70 covers glass and glassware, including glass in various forms (such as flat, tube, rod, bead, etc.) and glass products (such as vessels, mirrors, glass fiber, etc.). This chapter does not include imitation jewelry of glass (Chapter 71), toys of glass (Chapter 95), or lamps of glass (Chapter 94). The glass of this chapter may be of any composition, but generally refers to silicate glass, and also includes other glass such as fused quartz. Heading 7002 covers unworked glass tubes and tube fittings, including drawn or blown glass tubes, and glass tube fittings for various uses (such as joints, elbows, etc.). However, it is limited to glass tubes and tube fittings not further worked; if they have been cut, ground, drilled, etc., or assembled onto other articles, they may be classified under other headings. This heading also includes semi-finished glass tubes, such as glass tubes open at both ends. First 2 digits 70: represents Chapter 70, i.e., glass and glassware. Digits 3-4 02: represents heading 7002, i.e., unworked glass tubes and tube fittings, including glass tubes and glass tube fittings. Digits 5-6 39: represents subheading 700239, i.e., other glass tubes and tube fittings, referring to glass tubes and tube fittings other than those of fused quartz or other fused silica (subheading 700231) and those having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin within a temperature range of 0°C to 300°C (subheading 700232). These glasses usually have different coefficients of thermal expansion or are used for special purposes. The goods are glass tubes and tube fittings, and are not of fused quartz or silica, nor of glass having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin, so they are classified under 700239. If the glass tubes have been further worked (such as cut, ground, drilled, etc.), they may be classified under 7003 (glass tubes and tube fittings, worked) or a more specific heading. If the glass tubes are used for specific purposes (such as laboratory use), they may be classified under other chapters.
Chapter
Chapter 70 covers glass and glassware, including glass in various forms (such as flat, tube, rod, bead, etc.) and glass products (such as vessels, mirrors, glass fiber, etc.). This chapter does not include imitation jewelry of glass (Chapter 71), toys of glass (Chapter 95), or lamps of glass (Chapter 94). The glass of this chapter may be of any composition, but generally refers to silicate glass, and also includes other glass such as fused quartz.
Heading
Heading 7002 covers unworked glass tubes and tube fittings, including drawn or blown glass tubes, and glass tube fittings for various uses (such as joints, elbows, etc.). However, it is limited to glass tubes and tube fittings not further worked; if they have been cut, ground, drilled, etc., or assembled onto other articles, they may be classified under other headings. This heading also includes semi-finished glass tubes, such as glass tubes open at both ends.
Digit Breakdown
First 2 digits 70: represents Chapter 70, i.e., glass and glassware. Digits 3-4 02: represents heading 7002, i.e., unworked glass tubes and tube fittings, including glass tubes and glass tube fittings. Digits 5-6 39: represents subheading 700239, i.e., other glass tubes and tube fittings, referring to glass tubes and tube fittings other than those of fused quartz or other fused silica (subheading 700231) and those having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin within a temperature range of 0°C to 300°C (subheading 700232). These glasses usually have different coefficients of thermal expansion or are used for special purposes.
Classification Basis
The goods are glass tubes and tube fittings, and are not of fused quartz or silica, nor of glass having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin, so they are classified under 700239. If the glass tubes have been further worked (such as cut, ground, drilled, etc.), they may be classified under 7003 (glass tubes and tube fittings, worked) or a more specific heading. If the glass tubes are used for specific purposes (such as laboratory use), they may be classified under other chapters.
📝 Declaration Elements
Product Name: The specific name of the declared commodity, which should accurately reflect the material, shape, and use of the glass tube, such as "high borosilicate glass tube", "soda-lime glass tube", etc. Material: The specific composition of the glass, such as high borosilicate glass, soda-lime glass, quartz glass, etc., and the linear coefficient of expansion should be indicated (if applicable). Use: The main use of the glass tube, such as for laboratory, chemical, lighting, electronics, etc., which helps determine whether it belongs to other headings. Appearance: The shape, dimensions (outer diameter, wall thickness, length), color, transparency, etc. of the glass tube, and whether it has tube fittings. Processing Status: Whether it has been cut, ground, drilled, bent, etc., and whether it is assembled with other materials. Brand: The manufacturer or brand name; if there is no brand, declare "no brand". Model: The model or specification of the product, for easy identification and classification. Quantity and Unit: Declare the quantity and legal unit of measurement (kilogram), and indicate the packaging method. Product Name: High borosilicate glass tube; Material: High borosilicate glass, linear coefficient of expansion 3.3×10^-6 per Kelvin; Use: For laboratory heating; Appearance: Transparent, outer diameter 10mm, wall thickness 1mm, length 1000mm, open at both ends; Processing Status: Not further worked; Brand: No brand; Model: GB-10; Quantity: 100 kilograms. Failure to provide the linear coefficient of expansion, making it impossible to determine whether it belongs to 700232 or 700239. Incorrectly classifying cut or ground glass tubes under 700239, when they should actually be classified under 7003. Confusing glass tube fittings (such as elbows) with glass tubes; tube fittings must be declared separately. Ignoring the use description, resulting in inability to distinguish whether it belongs to other headings (such as laboratory glassware). Incorrect quantity unit, not using the legal unit kilogram.
Product Name
The specific name of the declared commodity, which should accurately reflect the material, shape, and use of the glass tube, such as "high borosilicate glass tube", "soda-lime glass tube", etc.
⚠️ Declaring only as "glass tube" without specifying material or use, resulting in ambiguous classification.
Material
The specific composition of the glass, such as high borosilicate glass, soda-lime glass, quartz glass, etc., and the linear coefficient of expansion should be indicated (if applicable).
⚠️ Failure to provide the linear coefficient of expansion, making it impossible to distinguish whether it belongs to 700232.
Use
The main use of the glass tube, such as for laboratory, chemical, lighting, electronics, etc., which helps determine whether it belongs to other headings.
⚠️ The use description is too general, such as "industrial use", without specific explanation.
Appearance
The shape, dimensions (outer diameter, wall thickness, length), color, transparency, etc. of the glass tube, and whether it has tube fittings.
⚠️ Failure to indicate dimensions, making it impossible to determine whether it belongs to tube fittings or has been worked.
Processing Status
Whether it has been cut, ground, drilled, bent, etc., and whether it is assembled with other materials.
⚠️ Incorrectly declaring worked glass tubes as unworked, resulting in classification errors.
Brand
The manufacturer or brand name; if there is no brand, declare "no brand".
⚠️ Confusing brand with manufacturer, or omitting the brand.
Model
The model or specification of the product, for easy identification and classification.
⚠️ Incomplete or incorrect model information.
Quantity and Unit
Declare the quantity and legal unit of measurement (kilogram), and indicate the packaging method.
⚠️ Incorrect unit, such as using "piece" instead of "kilogram".
Example： Product Name: High borosilicate glass tube; Material: High borosilicate glass, linear coefficient of expansion 3.3×10^-6 per Kelvin; Use: For laboratory heating; Appearance: Transparent, outer diameter 10mm, wall thickness 1mm, length 1000mm, open at both ends; Processing Status: Not further worked; Brand: No brand; Model: GB-10; Quantity: 100 kilograms.
Common Mistakes：
Failure to provide the linear coefficient of expansion, making it impossible to determine whether it belongs to 700232 or 700239.
Incorrectly classifying cut or ground glass tubes under 700239, when they should actually be classified under 7003.
Confusing glass tube fittings (such as elbows) with glass tubes; tube fittings must be declared separately.
Ignoring the use description, resulting in inability to distinguish whether it belongs to other headings (such as laboratory glassware).
Incorrect quantity unit, not using the legal unit kilogram.
🎯 Classification Logic
Core classification criteria: First confirm whether the goods are glass tubes and tube fittings, and have not been further worked. Then distinguish by material: if of fused quartz or other fused silica, classify under 700231; if of glass having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin, classify under 700232; other glass classify under 700239. Also note that if the glass tubes have been cut, ground, drilled, etc., or assembled with tube fittings, they may be classified under 7003 or a more specific heading. 700231 Glass tubes of fused quartz or other fused silica: The material is fused quartz or fused silica, which has extremely high heat resistance and low expansion coefficient, different from ordinary glass tubes. 700232 Glass tubes having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin: The material is low-expansion glass (such as borosilicate glass), with a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin within the range of 0-300°C. 7003 Worked glass tubes and tube fittings: Glass tubes that have been cut, ground, drilled, etc., or assembled with tube fittings, beyond the unworked scope of 7002. 7001 Cullet and other waste and scrap of glass; glass in the mass: 7001 is glass waste or in the mass, not tubular; 7002 is tubular. 7004 Drawn or blown glass sheets: 7004 is flat glass, not tubular. Is it made of glass? Is it tubular or a tube fitting? Has it not been further worked? Is the material fused quartz or silica? Is the linear coefficient of expansion not exceeding 5×10^-6 per Kelvin?
Basis
Core classification criteria: First confirm whether the goods are glass tubes and tube fittings, and have not been further worked. Then distinguish by material: if of fused quartz or other fused silica, classify under 700231; if of glass having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin, classify under 700232; other glass classify under 700239. Also note that if the glass tubes have been cut, ground, drilled, etc., or assembled with tube fittings, they may be classified under 7003 or a more specific heading.
Confused Codes：
700231 - Glass tubes of fused quartz or other fused silica
The material is fused quartz or fused silica, which has extremely high heat resistance and low expansion coefficient, different from ordinary glass tubes.
700232 - Glass tubes having a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin
The material is low-expansion glass (such as borosilicate glass), with a linear coefficient of expansion not exceeding 5×10^-6 per Kelvin within the range of 0-300°C.
7003 - Worked glass tubes and tube fittings
Glass tubes that have been cut, ground, drilled, etc., or assembled with tube fittings, beyond the unworked scope of 7002.
7001 - Cullet and other waste and scrap of glass; glass in the mass
7001 is glass waste or in the mass, not tubular; 7002 is tubular.
7004 - Drawn or blown glass sheets
7004 is flat glass, not tubular.
Self-Check：
✓ Is it made of glass?
✓ Is it tubular or a tube fitting?
✓ Has it not been further worked?
✓ Is the material fused quartz or silica?
✓ Is the linear coefficient of expansion not exceeding 5×10^-6 per Kelvin?
❓ FAQ
How to determine whether a glass tube belongs to 700239? First confirm that the glass tube has not been further worked, and the material is not fused quartz or silica, and the linear coefficient of expansion is greater than 5×10^-6 per Kelvin (or not provided but actually greater), then classify under 700239. If the linear coefficient of expansion does not exceed 5×10^-6 per Kelvin, classify under 700232. How should glass tube fittings (such as elbows) be classified? If the glass tube fittings are unworked and are presented together with glass tubes, they can be classified under 7002; if presented separately, they are still classified under 7002, but it is necessary to confirm whether they have been worked. If they have been worked, classify under 7003. Which code should cut glass tubes be classified under? If cut glass tubes are only cut into segments without further working, they may still be classified under 7002; but if they have been ground, drilled, etc., they are classified under 7003. The specific classification depends on the degree of working. Should high borosilicate glass tubes be classified under 700232 or 700239? The linear coefficient of expansion of high borosilicate glass is usually 3.3×10^-6 per Kelvin, not exceeding 5×10^-6 per Kelvin, so it should be classified under 700232. If the linear coefficient of expansion is greater than 5, classify under 700239. Are laboratory glass tubes classified under 700239? If laboratory glass tubes are unworked glass tubes, they are still classified under 7002; if they have been made into laboratory-specific vessels (such as test tubes, beakers), they are classified under 7017. How to provide the linear coefficient of expansion when declaring? The linear coefficient of expansion should be provided by the manufacturer in a test report or technical parameters. When declaring, indicate the specific value and test temperature range (such as 0-300°C) in the "Material" element. How to check the tariff rate for 700239? The tariff rate must be checked according to the customs tariff of the destination country, and may change with trade agreements and policy adjustments. It is recommended to check the latest rate through the customs official website or professional databases. What is the difference between glass tubes and glass rods? Glass tubes are hollow, while glass rods are solid. Glass rods are classified under 7002 (if unworked) or 7003 (if worked), but under different subheadings: glass rods are usually classified under 700220.
Q: How to determine whether a glass tube belongs to 700239?
A: First confirm that the glass tube has not been further worked, and the material is not fused quartz or silica, and the linear coefficient of expansion is greater than 5×10^-6 per Kelvin (or not provided but actually greater), then classify under 700239. If the linear coefficient of expansion does not exceed 5×10^-6 per Kelvin, classify under 700232.
Q: How should glass tube fittings (such as elbows) be classified?
A: If the glass tube fittings are unworked and are presented together with glass tubes, they can be classified under 7002; if presented separately, they are still classified under 7002, but it is necessary to confirm whether they have been worked. If they have been worked, classify under 7003.
Q: Which code should cut glass tubes be classified under?
A: If cut glass tubes are only cut into segments without further working, they may still be classified under 7002; but if they have been ground, drilled, etc., they are classified under 7003. The specific classification depends on the degree of working.
Q: Should high borosilicate glass tubes be classified under 700232 or 700239?
A: The linear coefficient of expansion of high borosilicate glass is usually 3.3×10^-6 per Kelvin, not exceeding 5×10^-6 per Kelvin, so it should be classified under 700232. If the linear coefficient of expansion is greater than 5, classify under 700239.
Q: Are laboratory glass tubes classified under 700239?
A: If laboratory glass tubes are unworked glass tubes, they are still classified under 7002; if they have been made into laboratory-specific vessels (such as test tubes, beakers), they are classified under 7017.
Q: How to provide the linear coefficient of expansion when declaring?
A: The linear coefficient of expansion should be provided by the manufacturer in a test report or technical parameters. When declaring, indicate the specific value and test temperature range (such as 0-300°C) in the "Material" element.
Q: How to check the tariff rate for 700239?
A: The tariff rate must be checked according to the customs tariff of the destination country, and may change with trade agreements and policy adjustments. It is recommended to check the latest rate through the customs official website or professional databases.
Q: What is the difference between glass tubes and glass rods?
A: Glass tubes are hollow, while glass rods are solid. Glass rods are classified under 7002 (if unworked) or 7003 (if worked), but under different subheadings: glass rods are usually classified under 700220.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.