Contractors in Texas

On & Offshore Quality Control Specialists, LLC. is a full service inspection company representing businesses across the nation and worldwide. They offer certified welding, environmental, tank, station, utility, scheduler, safety, material, and vendor inspection services for oil and gas.

On Time Home Experts is the leading air duct cleaning company in Mansfield, Texas and the surrounding areas. We also provide additional services including dryer vent cleaning and chimney cleaning. Our professional technicians are the experts in residential air duct cleaning and commercial air duct cleaning. Additionally, we provide repair and replacement of the air duct system. Our goal is to make sure you have high indoor air quality free of dust and debris. We also have various options for installation that will make sure your air quality is contaminant free. This includes installation of UV lights and air scrubbers.

One Force Oilfield Services caters to the needs of oilfield businesses in the Permian Basin.

One Shot Reliability is a construction management company that was founded with the vision of enhancing project communications amongst key stakeholders. They provide owner representation that ensures projects are successful.

One Source Building Services is a commercial construction and facility management service company based in the DFW area. They have been involved in construction services for over 30 years. They specialize in providing a professional yet easy going approach.

Commercial landscape, irrigation and grounds maintenance contractor serving the Houston metro area. Positioned as a single source to property owners and developers, general contractors and property managers.

ONNIT Services, LLC offers comprehensive maintenance, repair, and cleaning services for industrial facilities. They specialize in confined space entry tank cleaning, vacuum truck services, fuel/oil spills, hazardous waste disposal, marine spill response, and water/sump removal.

Mobile fleet service company providing onsite tire and preventative maintenance such as oil changes at your location.

Onursan USA is a marine safety service company.

Onward Auditing specializes in oil and gas audits, focusing on safety and environmental management programs.

Onward Consulting is a Houston-based consulting firm specializing in SEMS Compliance, HLO & Logistics, Inspections, Leadership Development and Training within the oil and gas industry. They provide corporate and field-level SEMS experts, inspection services, logistics experts, helicopter landing personnel, and leadership training. They focus on improving safety culture through training and consulting.

Onward Resources is an integrated service provider to the upstream and midstream oil & gas, and energy sectors, delivering full turnkey Engineering, Procurement and Construction (EPC) projects, through to an extensive range of associated services.

ONWARD Survey & Land Services is a professional Land Survey & Right of Way Acquisitions firm dedicated to serving the acquisitions, land surveying and staffing needs of the Oil & Gas Industry and the Alternative Renewable Energy industry for Wind & Solar & Utility Companies for all of your infrastructure projects.

Onyx Drilling Services specializes in providing professional staffing solutions for directional drillers and Measurement While Drilling (MWD) personnel. They offer services including contract Directional Drilling Services, and Logistics.

Onyx Solutions specializes in plumbing, construction, general contracting, and HVAC services ranging from installations, diagnostic testing, and full-scale repairs.

Onyx Solutions LLC is a startup company delivering integrated solutions to the Oil and Gas Industry. They specialize in business consulting and product & equipment solutions.

Local 450 has negotiated fair working conditions, wages, and benefits for working men and women while providing the best qualified workforce for our signatory contractors.

Operations Technology Specialists (OTS) is a Project Management and Technical service company that provides experienced people, projects and operations readiness for your company. They specialize in process automation and instrumentation for clients in the oil and gas sector.

RF shielding, MRI Installations, Magnetic shielding,RF attenuation testing, CT field services

Optimized Process Designs LLC (OPD) provides clients with detailed engineering packages in all disciplines, single-point procurement for all equipment and materials, fabrication and direct-hired construction services at project locations throughout the United States.

Optimum Mechanical Services is a general mechanical service contractor serving industrial and commercial markets. They provide mechanical services for turnaround and capital projects.

Optimus Translog Services, LLC started operations as a family-owned company with a vision to revolutionize the specialized transportation industry. The company is committed to innovation and teamwork, delivering the highest quality work in specialized transportation.