Other, longitudinally welded (HS 730512)
Other, longitudinally welded (HS 730512) has 1,328 U.S. import bill-of-lading shipment records between Jan 2020 and Aug 2026. The largest U.S. importer of Other, longitudinally welded is SALZGITTER MANNESMANN SALZGITTER MANNESMANN INTERNATIONALUSA INC, with 391 shipments, followed by YUSA CORP and TSMC ARIZONA CORP. The leading supplier is MANNESMANN LINE PIPE GMBH, with 448 shipments, followed by YAMASHITA RUBBER CO LTD and UNITED INTEGRATED SERVICES CO LTD. Goods originate mainly from GERMANY and JAPAN, arriving primarily at LOS ANGELES, CA. Import volume has declined over the past 12 months versus the prior year.
Sourced from U.S. Customs bill of lading data · Updated monthly · Data through August 2026Cite as: ImportDoor, U.S. Customs bill of lading data (data through August 2026), https://www.importdoor.com/products/730512-other-longitudinally-welded
See all 1,328 shipments of HS 730512 with dates, ports, consignees, filters and CSV export in the ImportDoor dashboard.
Open in dashboardShipments by month (last 24 months)
Trade flow: top suppliers → U.S. importers
The strongest supplier-importer relationships for Other, longitudinally welded (HS 730512), by shipment volume. Hover a ribbon for details; click a name to open its profile.
The largest relationship is MANNESMANN LINE PIPE GMBH → SALZGITTER MANNESMANN SALZGITTER MANNESMANN INTERNATIONALUSA INC with 391 shipments, followed by YAMASHITA RUBBER CO LTD → YUSA CORP (286) and UNITED INTEGRATED SERVICES CO LTD → TSMC ARIZONA CORP (188).
Top U.S. importers
| Importer | Shipments |
|---|---|
| SALZGITTER MANNESMANN SALZGITTER MANNESMANN INTERNATIONALUSA INC | 391 |
| YUSA CORP | 286 |
| TSMC ARIZONA CORP | 193 |
| ALUMA FORM INC | 56 |
| EDGEN MURRAY CORP | 55 |
| GPP SOLUTIONS LLC | 38 |
| HOME DEPOT USA INC | 37 |
| NIPPON STEEL TRADE AMERICAS INC | 33 |
| TRIMBLE NAVIGATION LIMITED | 23 |
| FIRST SOLAR INC | 16 |
Top suppliers
| Supplier | Shipments |
|---|---|
| MANNESMANN LINE PIPE GMBH | 448 |
| YAMASHITA RUBBER CO LTD | 286 |
| UNITED INTEGRATED SERVICES CO LTD | 188 |
| YANGZHOU MENGTA LINE FITTING CO | 47 |
| YANGZHOU MENGTA LINE FITTINGS CO | 43 |
| CHANGZHOU HUADA KEJIE OPTO ELECTRO | 33 |
| NIPPON STEEL TRADE CORP | 33 |
| GRENZEBACH MASCHINEBAU GMBH | 28 |
| CHANGZHOU HUADA KEJIE OPTO ELECTRO LTD | 20 |
| DAMCO NINGBO BRANCH | 16 |
Origin countries
| Country | Shipments |
|---|---|
| GERMANY | 453 |
| JAPAN | 326 |
| CHINA | 253 |
| TAIWAN | 211 |
| REPUBLIC OF KOREA | 14 |
| BELGIUM | 11 |
| MOROCCO | 11 |
| INDIA | 10 |
| VIET NAM | 10 |
| SPAIN | 6 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| LOS ANGELES, CA | 511 |
| HOUSTON, TX | 468 |
| LONG BEACH, CA | 114 |
| SAVANNAH, GA | 67 |
| SEATTLE, WA | 52 |
| TACOMA, WA | 42 |
| NORFOLK, VA | 27 |
| NEW YORK/NEWARK AREA, NEWARK, NJ | 17 |
| SAN DIEGO, CA | 5 |
| SAN JUAN, PUERTO RICO | 5 |
Harmonized System classification
HS code 730512 — Other, longitudinally welded. 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.
More products under HS 7305
Other six-digit codes in HS 7305: Other tubes and pipes (for example, welded, riveted or similarly closed), having circular cross sections, the external diameter of which exceeds 406.4 mm, of iron or steel, with their U.S. import volume.
Frequently asked questions about importing Other, longitudinally welded
Who imports Other, longitudinally welded (HS 730512)?
Based on U.S. Customs bill-of-lading records, the top U.S. importers of Other, longitudinally welded include SALZGITTER MANNESMANN SALZGITTER MANNESMANN INTERNATIONALUSA INC, YUSA CORP, TSMC ARIZONA CORP, ALUMA FORM INC, and EDGEN MURRAY CORP.
Who is the largest U.S. importer of Other, longitudinally welded?
SALZGITTER MANNESMANN SALZGITTER MANNESMANN INTERNATIONALUSA INC is the largest U.S. importer of Other, longitudinally welded (HS 730512), with 391 bill-of-lading shipment records.
Who are the top suppliers of Other, longitudinally welded?
Leading suppliers shipping Other, longitudinally welded (HS 730512) to the U.S. include MANNESMANN LINE PIPE GMBH, YAMASHITA RUBBER CO LTD, UNITED INTEGRATED SERVICES CO LTD, YANGZHOU MENGTA LINE FITTING CO, and YANGZHOU MENGTA LINE FITTINGS CO.
How many U.S. shipments of Other, longitudinally welded are there?
ImportDoor has 1,328 U.S. import shipment records under HS code 730512, spanning Jan 2020 to Aug 2026.
Where is Other, longitudinally welded imported from?
Other, longitudinally welded is imported into the U.S. primarily from GERMANY, JAPAN, and CHINA.
Find Other, longitudinally welded importers & suppliers
Get the complete list of U.S. importers and global suppliers for HS 730512, with contact details and container-level shipment records on ImportDoor.
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