Tubes of fused quartz or other fused silica (HS 700231)
Tubes of fused quartz or other fused silica (HS 700231) has 3,082 U.S. import bill-of-lading shipment records between Jun 2019 and Jul 2026. The largest U.S. importer of Tubes of fused quartz or other fused silica is QSIL CORP, with 229 shipments, followed by SAINT GOBAIN ABRASIVES INC and VALIANT INTERNATIONAL INC. The leading supplier is QSIL GMBH, with 201 shipments, followed by IMERYS AL ZAYANI CO and RAESCH QUARZ GERMANY GMBH. Goods originate mainly from CHINA and GERMANY, arriving primarily at NEW YORK/NEWARK AREA, NEWARK, NJ. Import volume has risen over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through July 2026
Shipments over time (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Tubes of fused quartz or other fused silica (HS 700231), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is QSIL GMBH → QSIL CORP with 170 shipments, followed by IMERYS AL ZAYANI CO → SAINT GOBAIN ABRASIVES INC (124) and RAESCH QUARZ GERMANY GMBH → FRIEDRICH & DIMMOCK INC (108).
Top U.S. importers
| Importer | Shipments |
|---|---|
| QSIL CORP | 229 |
| SAINT GOBAIN ABRASIVES INC | 227 |
| VALIANT INTERNATIONAL INC | 155 |
| FRIEDRICH & DIMMOCK INC | 108 |
| 3M CANADA COMPANY | 96 |
Top suppliers
| Supplier | Shipments |
|---|---|
| QSIL GMBH | 201 |
| IMERYS AL ZAYANI CO | 179 |
| RAESCH QUARZ GERMANY GMBH | 138 |
| QSIL NEDERLAND B V | 123 |
| QSIL GMBH QUARZSCHMELZE ILMENAU | 120 |
Origin countries
| Country | Shipments |
|---|---|
| CHINA | 1,339 |
| GERMANY | 675 |
| BAHRAIN | 203 |
| REPUBLIC OF KOREA | 139 |
| NETHERLANDS | 132 |
| FRANCE | 116 |
| BRAZIL | 75 |
| INDIA | 60 |
| AUSTRALIA | 49 |
| AUSTRIA | 48 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| NEW YORK/NEWARK AREA, NEWARK, NJ | 991 |
| HOUSTON, TX | 281 |
| SAVANNAH, GA | 244 |
| GRAMERCY, LA | 229 |
| LONG BEACH, CA | 210 |
| LOS ANGELES, CA | 208 |
| CHARLESTON, SC | 179 |
| SEATTLE, WA | 175 |
| NORFOLK, VA | 144 |
| NEW YORK, NY | 92 |
Harmonized System classification
HS code 700231 — Tubes of fused quartz or other fused silica. The Harmonized System is the international standard for classifying traded goods; U.S. Customs records this 6-digit code on every bill of lading.
Not sure this is the right code? Search all 5,700+ subheadings with the free HS code lookup, or see which product categories are growing in our quarterly State of U.S. Imports reports.
Frequently asked questions about importing Tubes of fused quartz or other fused silica
Who imports Tubes of fused quartz or other fused silica (HS 700231)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Tubes of fused quartz or other fused silica include QSIL CORP, SAINT GOBAIN ABRASIVES INC, VALIANT INTERNATIONAL INC, FRIEDRICH & DIMMOCK INC, and 3M CANADA COMPANY.
Who is the largest U.S. importer of Tubes of fused quartz or other fused silica?
QSIL CORP is the largest U.S. importer of Tubes of fused quartz or other fused silica (HS 700231), with 229 bill-of-lading shipment records.
Who are the top suppliers of Tubes of fused quartz or other fused silica?
Leading suppliers shipping Tubes of fused quartz or other fused silica (HS 700231) to the U.S. include QSIL GMBH, IMERYS AL ZAYANI CO, RAESCH QUARZ GERMANY GMBH, QSIL NEDERLAND B V, and QSIL GMBH QUARZSCHMELZE ILMENAU.
How many U.S. shipments of Tubes of fused quartz or other fused silica are there?
ImportDoor has 3,082 U.S. import shipment records under HS code 700231, spanning Jun 2019 to Jul 2026.
Where is Tubes of fused quartz or other fused silica imported from?
Tubes of fused quartz or other fused silica is imported into the U.S. primarily from CHINA, GERMANY, and BAHRAIN.
Find Tubes of fused quartz or other fused silica importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 700231, with contact details and container-level shipment records on ImportDoor.
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