Classification Details
| NMFC | Description | Class |
|---|---|---|
| 180690.00 | Tank Heads (Ends), steel, finished or unfinished: | |
| 180690.01 | On A-frame or easel-type shipping racks | 200 |
| 180690.02 | Other than as set forth in sub 1, subject to Item 170 and having a density in pounds per cubic foot of: | |
| 180690.03 | Less than 25 | 70 |
| 180690.04 | 25 or greater | 60 |
How to Determine Your Class
To find the correct freight class for your shipment:
- Calculate density from shipment weight and cubic feet: measure the largest diameter and total stack height (or palletized L×W×H), then weight ÷ cube to pick the 60–200 class.
- Nest same-diameter heads with ring spacers to prevent metal-to-metal rub, then band tightly to a pallet or cradle. Use edge guards over flanges and chimes.
- Protect finished surfaces with VCI wrap or film and cap any openings. Mark pieces ‘Do Not Stack’ when surface finish is critical or easily marred.
- Stabilize for handling: load convex side up unless cradled, chock to stop rolling, and label center of gravity for safe forklift pickup and securement.
Note: All classifications are subject to Item 170. Verify with official NMFC publications for the most current requirements.
Business Value
- Optimized nesting raises density, lowering the freight class within 60–200 and cutting LTL costs without changing carriers.
- Palletized, repeatable builds reduce reweigh/reclass risk and speed cross-dock handling, improving transit reliability.
- Edge and surface protection slash damage claims and post-delivery refinishing, preserving finish specs for pressure-vessel fabrication.
- Non-hazardous status broadens carrier options and simplifies booking, often yielding faster pickups and better rates.