Drawn Borosilicate Glass Sheet for Lab Tables
Heat-resistant drawn borosilicate glass sheet for laboratory tabletops and equipment covers. HTS 7004.90.50.00 covers this as other drawn glass sheets not otherwise worked, including fused silica per chapter note.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If shaped or profiled for specific fit
Sheets with cut shapes or profiles are in 7006, while flat sheets remain in 7004 per chapter distinctions.
If for laboratory apparatus end-use as finished item
Lab glassware like covers classifies in 7017 if purpose-built, not raw sheets.
If chemically strengthened for lab durability
Toughened or laminated safety glass goes to 7007 regardless of original sheet type.
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Import Tips & Compliance
• Include chemical composition analysis showing borosilicate to leverage chapter note on fused quartz/silica
• Ensure declaration specifies 'not otherwise worked' to prevent reclassification to 7006 for profiled sheets
• Test for coatings; even thin reflecting layers could shift to specific 7004 subheadings if declared
Related Products under HTS 7004.90.50.00
Drawn Soda-Lime Glass Sheet 2mm Thick
A flat sheet of drawn soda-lime glass, 2mm thick, used for picture frames and tabletops. It falls under HTS 7004.90.50.00 as drawn glass in sheets, not otherwise worked beyond possible annealing, with no additional processing like edging or coating mentioned in exclusions.
Blown Patterned Glass Sheet for Skylights
Translucent blown glass sheet with subtle texture pattern, ideal for skylights and decorative panels. Classified in 7004.90.50.00 as blown glass in sheets, other than colored or clear window glass, not otherwise worked.
Blown Textured Glass Sheet for Partitions
Obscure textured blown glass sheets used for office partitions and shower screens. Falls under 7004.90.50.00 as other blown glass in sheets, without further working beyond annealing.
Drawn Quartz Glass Sheet for Optical Use
High-purity drawn fused quartz glass sheets for optical instruments and UV applications. Included in 7004.90.50.00 as drawn glass sheets per chapter note defining 'glass' to include fused quartz.
Drawn Float-Alternative Glass Sheet 3mm
3mm drawn glass sheets serving as economical alternative to float glass for displays. Classified 7004.90.50.00 as other drawn sheets not otherwise worked.
Blown Opalescent Glass Sheet for Lampshades
Milky opalescent blown glass sheets cut for custom lampshades. Under 7004.90.50.00 as other blown sheets; cutting to shape allowed per notes.