A-Ox Welding Supply Company Inc is an active interstate carrier based in Sioux Falls, SD.
No insurance filings on record.
View on FMCSA L&I| Vehicle Type | Owned | Term Leased | Trip Leased |
|---|---|---|---|
| Straight Trucks | 22 | 0 | 0 |
| Tractors | 8 | 0 | 0 |
| Trailers | 4 | 0 | 0 |
| Total Power Units | 30 | ||
Distinct vehicles · 24 mo
vs 30 self-reported (MCS-150)
Top makes
Registered in
Higher values = more violations. 0 = clean record.
| Category | Insp w/ Viol |
|---|
| Category | vs. Cohort | vs. State | Reading |
|---|---|---|---|
| Unsafe Driving | 0% | 0% | Better than most peers |
| HOS Compliance | 69% | 94% | Around peer average |
| Driver Fitness | 0% | 0% | Better than most peers |
| Controlled Substances | 0% | 0% | Better than most peers |
| Vehicle Maintenance | 44% | 81% | Around peer average |
Lower percentile = lower SMS measure = stronger safety record. Computed nightly across active carriers in the same state and fleet-size band.
| Type | Inspections | OOS | OOS % | Nat'l Avg |
|---|---|---|---|---|
| Driver | 0 | 1 | — | 6.67% |
| Vehicle | 0 | 5 | — | 22.26% |
| Hazmat | 29 | 0 | 0.00% |
| Period | Fatalities | Injuries | Tow-away | Total |
|---|---|---|---|---|
| No crashes recorded | 0 | 0 | 0 | 0 |
Most-cited violation codes
| BASIC Category | Total | Severe | OOS |
|---|---|---|---|
| Vehicle Maintenance |
| Date | State | Vehicle | Violations | OOS |
|---|---|---|---|---|
| Sep 1, 2026 | NE | STRAIGHT TRUCK | 0 | 0 |
| Jun 17, 2026 | SD | STRAIGHT TRUCK | 0 | 0 |
| Jun 11, 2026 | MN | TRUCK TRACTOR | 0 | 0 |
| Jun 10, 2026 | SD | STRAIGHT TRUCK | 0 | 0 |
| May 18, 2026 | SD |
Carriers that share an officer, phone, or email with this DOT.
Shared officer · 5
A & B Welding Supply Co
Rapid City, SD
Kelly Kleinwolterink
A & T Transport Llc
Summerville, SC
Tiffany Anderson · also at 4 others
Tiffany Lee Anderson
Fairfield, TX
Tiffany Anderson · also at 4 others
Tjh Freight Brokerage & Dispatch Llc
England, AR
Tiffany Anderson · also at 4 others
Twins Trucking Llc
N Charleston, SC
Tiffany Anderson · also at 4 others
| Measure |
|---|
| Alert |
|---|
| Unsafe Driving | 0 | 0.00 | — |
| HOS Compliance | 1 | 0.42 | — |
| Vehicle Maintenance | 9 | 2.12 | — |
| Driver Fitness | 0 | 0.00 | — |
| Controlled Substances | 0 | 0.00 | — |
| 4.44% |
Where they run
Inspected in 6 states. Top state SD accounts for 55% of activity. Activity outside home state (SD): 45%.
+1 other state with fewer inspections
| 28 |
| 3 |
| 5 |
| Hazardous Materials Compliance | 10 | 3 | 4 |
| Hours-of-Service Compliance | 2 | 2 | 0 |
| TRUCK TRACTOR |
| 0 |
| 0 |
| May 4, 2026 | ND | STRAIGHT TRUCK | 1 | 1 |
| Apr 22, 2026 | SD | STRAIGHT TRUCK | 0 | 0 |
| Apr 21, 2026 | SD | STRAIGHT TRUCK | 0 | 0 |
| Apr 4, 2026 | SD | TRUCK TRACTOR | 0 | 0 |
| Mar 11, 2026 | MN | TRUCK TRACTOR | 2 | 0 |
| Date | Code | Description | BASIC | OOS |
|---|---|---|---|---|
| May 4, 2026 | 39375A3TAOL | Tires - All others leaking or inflation less than 50% of the maximum inflation pressure on tire not equipped with ATIS | Vehicle Maintenance | Yes |
| Mar 11, 2026 | 3953A2HOSPD | HOS (Property) - Driving beyond the 14 hour after coming on duty following 10 consecutive hours off duty during the current 8 consecutive day period. Date and Tim | Hours-of-Service Compliance | — |
| Mar 11, 2026 | 3958EHOSPD | HOS (Property) - No driver may make a false report in connection with a duty status. Explain | Hours-of-Service Compliance | — |
| Feb 19, 2026 | 39345DB | Air Brake - Audible air leak at a proper connection | Vehicle Maintenance | — |
| Jul 22, 2025 | 177801HMHCNP | HM (Highway Carriage) - Driver accepted/transported HM not prepared in accordance with this Subchapter. Explain | Hazardous Materials Compliance | — |
| Jul 22, 2025 | 177817AHMSP | HM (Shipping Papers) - Operate a motor vehicle without a required shipping paper. NOTE: An error in the shipping description or an incomplete shipping description | Hazardous Materials Compliance | Yes |
| Jul 22, 2025 | 39347ABCFSBD | Drum Brake - Contaminated friction surface | Vehicle Maintenance | — |
| Jul 22, 2025 | 39348ABMBCBD | Drum Brake - Missing/broken component(s) | Vehicle Maintenance | — |
| Jul 22, 2025 | 39378AWS | Washers - Inoperative washing system. | Vehicle Maintenance | — |
| Jul 22, 2025 | 3965BHWSL | Hubs - Wheel seal leaking | Vehicle Maintenance | Yes |