United Oil Co., Inc.
Baltimore, MD 21224
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Our Story
Customers of The United Oil Company have benefitted from superior quality Duralene® Heavy Duty Lubricants since 1920. As the Baltimore, Maryland region's only independent heavy duty lubricant manufacturer, as well as one of the oldest in the United States, our founding principles guide our every move. Stability and consistency, coupled with word-of-mouth, fuel our continued growth.
What We Do
Commercial Experience
Auto Dealership / Service
Civil & Site Development
Gas Station
Industrial Maintenance
Laboratory
Misc Project
Non-Building Construction
Non-Residential Building
Parking Garage
Power Generation & Distribution
Storage Facility / Warehouse
Terminal - Airport / Bus / Railroad
Regions & Counties Serviced
- Washington D.C.
Maryland All
Our CSI Codes
01 51 19 - Temporary Fuel Oil
01 51 29 - Temporary Natural-Gas
33 52 13 - Fuel-Oil Distribution
33 52 13.13 - Fuel-Oil Piping
33 52 16 - Gasoline Distribution
33 52 19 - Diesel Fuel Distribution
33 52 43 - Aviation Fuel Distribution
33 52 43.13 - Aviation Fuel Piping
33 52 43.16 - Aviation Fuel Connections
33 52 43.19 - Aviation Fuel Grounding
43 06 10 - Schedules for Gas Handling Equipment
43 06 20 - Schedules for Liquid Handling Equipment
43 06 30 - Schedules for Gas and Liquid Hi-Purification Equipment
43 06 40 - Schedules for Gas and Liquid Storage
43 10 00.00.01 - Gas Handling Equipment
