UNITED PIPING INC

USDOT 676883 · status active · 7 pass / 0 fail / 2 unknown

What this page is. A rendering of FMCSA public records on a stated date. Not a safety rating, credit score, or recommendation. Source: Company Census File (az4n-8mr2, updated 2026-10-21, sha256 73d4c5901abe8cdb…).

Checks

PASS authority_active
Registration active in the census record.

fields: status_code
UNKNOWN allowed_to_operate
Not queried. Requires the live FMCSA API; the census file does not carry this field. We never default it to pass.

fields: allowed_to_operate
UNKNOWN bipd_on_file
Absence from the gap release is not proof of coverage; the release only lists carriers with no filing. Query the live API to confirm.

fields: bipd_file
PASS mcs150_current
Last MCS-150 filing 2026-03-24.

fields: mcs150_date
PASS contact_complete
Phone and email both on file.

fields: phone, email_address
PASS shared_identifier_suppressed
No suppressed identifier on this record.

fields: phone, phy_street
PASS no_involuntary_revocation
No revocation of any kind appears in the FMCSA revocation history.

fields: dot_number
PASS out_of_service_order
No out-of-service order in the FMCSA record.

fields: dot_number
PASS authority_age
Registered 1997-02-18 (10841 days ago, ~29.7 years). Context only; new authority is a higher-risk cohort, not a verdict.

fields: add_date

Identity

Legal name	UNITED PIPING INC Company Census File
DBA	— Company Census File
MC number	1026836 Company Census File
Registration status	A Company Census File
Operation type	A Company Census File
Registered since	1997-02-18 Company Census File

Contact

Phone	2187277676 Company Census File
Email	holly.dobson@unitedpiping.us Company Census File
Officer 1	TIM DARIF Company Census File
Officer 2	BART SEGER Company Census File

Address

Street	4510 AIRPORT RD Company Census File
City	DULUTH Company Census File
State	MN Company Census File
ZIP	55811 Company Census File
Country	US Company Census File

Fleet (self-reported on MCS-150)

Truck units	29 Company Census File
Power units	29 Company Census File
Drivers	19 Company Census File
CDL drivers	17 Company Census File
Intrastate drivers	2 Company Census File
Last MCS-150 filing	2026-03-24 Company Census File

Related carriers

No other active carrier shares this carrier's officer and address in the public record.

Safety history

Counts from FMCSA inspection and crash records, all history on file. Not a safety rating; FMCSA assigns ratings only after an on-site review.

Inspections	27 driver 4 · vehicle 11
Out-of-service	4 (14.8% of inspections) driver 1 · vehicle 3
Violations	32
Inspection span	2023-12-13 – 2026-10-05
Crashes	6 fatal 0 · injury 1 · tow-away 6
Crash span	2006-07-26 – 2023-07-27

Rulebook v1 · JSON