O&K CO LTD
O&K CO LTD is a supplier based in JAPAN with 1,617 U.S. import bill-of-lading shipment records between Jan 2020 and Aug 2026. It is the leading supplier of Concrete reinforcing bars and rods (HS 721310) to the U.S. by shipment count. Its top U.S. customers include O&K AMERICAN CORP, ROCKNEL FASTENER INC, and MUSASHI AUTO PARTS CANADA INC, primarily ships HS code 721310. Shipments arrive primarily at LOS ANGELES, CA. Shipment volume has held steady 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/supplier/o-k-co-ltd
See all 1,617 shipments of O&K CO LTD with dates, ports, consignees, filters and CSV export in the ImportDoor dashboard.
Open in dashboardShipments by month (last 24 months)
Trade flow: products → U.S. importers
What O&K CO LTD ships and to whom — the strongest product-customer relationships in its shipment records. Hover a ribbon for details; click a name to open its profile.
The largest relationship is Concrete reinforcing bars and rods → O&K AMERICAN CORP with 808 shipments, followed by Other bars and rods, not further worked than hot-rolled, hot-dr… → O&K AMERICAN CORP (240) and Not plated or coated, whether or not polished → O&K AMERICAN CORP (146).
Top U.S. customers
| Importer | Shipments |
|---|---|
| O&K AMERICAN CORP | 1,420 |
| ROCKNEL FASTENER INC | 153 |
| MUSASHI AUTO PARTS CANADA INC | 37 |
| OKAYA USA | 6 |
| SEKIDO TECHNOLOGY CORP | 1 |
Top products (HS codes)
| Product (HS code) | Shipments |
|---|---|
| Concrete reinforcing bars and rods (721310) | 897 |
| Other bars and rods, not further worked than hot-rolled, hot-drawn or extruded of tool steel (other than high-speed steel) (722830) | 254 |
| Not plated or coated, whether or not polished (721710) | 146 |
| Bars and rods, not further worked than hot-rolled, hot-drawn or extruded of circular cross-section (722211) | 17 |
| 722694 | 10 |
| 030380 | 4 |
| Jams, fruit jellies, marmalades, fruit or nut pureé and fruit or nut pastes, obtained by cooking, whether or not containing added sugar or other sweetening matter, other (200799) | 4 |
| Bars and rods, hot-rolled, in irregularly wound coils, of other alloy steel, other (722790) | 3 |
| Concrete reinforcing bars and rods (721310.0) | 2 |
| Jams, fruit jellies, marmalades, fruit or nut pureé and fruit or nut pastes, obtained by cooking, whether or not containing added sugar or other sweetening matter, other (200799.0) | 1 |
Origin countries
| Country | Shipments |
|---|---|
| JAPAN | 1,617 |
Ports of unlading
| U.S. port | Shipments |
|---|---|
| LOS ANGELES, CA | 1,438 |
| TACOMA, WA | 77 |
| NORFOLK, VA | 66 |
| CHARLESTON, SC | 13 |
| LONG BEACH, CA | 12 |
| OAKLAND, CA | 7 |
| SAVANNAH, GA | 3 |
| SEATTLE, WA | 1 |
Other suppliers of Concrete reinforcing bars and rods
Suppliers that also ship Concrete reinforcing bars and rods (HS 721310) to the U.S., ranked by shipment volume.
| Supplier | Shipments |
|---|---|
| GERDAU METALDOM S A | 477 |
| DONGKUK STEEL MILL CO LTD | 30 |
Frequently asked questions about O&K CO LTD
Who are O&K CO LTD's top U.S. customers?
Based on U.S. Customs bill-of-lading records, O&K CO LTD's top U.S. importers include O&K AMERICAN CORP, ROCKNEL FASTENER INC, MUSASHI AUTO PARTS CANADA INC, OKAYA USA, and SEKIDO TECHNOLOGY CORP.
What does O&K CO LTD export?
O&K CO LTD's most frequent shipments fall under HS codes 721310, 722830, and 721710.
Is O&K CO LTD a major supplier of Concrete reinforcing bars and rods?
Yes — based on U.S. Customs bill-of-lading shipment counts, O&K CO LTD is the leading supplier of Concrete reinforcing bars and rods (HS 721310) to the U.S.
Where does O&K CO LTD ship from?
O&K CO LTD ships primarily from JAPAN.
How many shipments does O&K CO LTD have?
ImportDoor has 1,617 U.S. import shipment records for O&K CO LTD, spanning Jan 2020 to Aug 2026.
Which U.S. ports does O&K CO LTD ship to?
O&K CO LTD's shipments arrive primarily at LOS ANGELES, CA and TACOMA, WA.
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