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Management and Engineering
Cranes and Rigging
Tanks and Pressure Vessels
Welding and Fabrication
Piping
Mechanical
Structural
Civil and Earthwork
Transport and Hauling
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About Us
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Navigation Menu
Navigation Menu
Service Lines
Project Work
Management and Engineering
Cranes and Rigging
Tanks and Pressure Vessels
Welding and Fabrication
Piping
Mechanical
Structural
Civil and Earthwork
Transport and Hauling
Electrical
Turnarounds
Specialty Services
Emerging Technologies
Our Vision
About Us
Strategic Partnership
Committment to Safety
Competitive Advantage
Testamonials
Piping
piping shop
piping-trench
piping white
working on pipe
welding pipe piping
worker working on pipe
Holly is the only partner you need for your industrial process piping projects. Holly provides comprehensive industrial piping services for new construction, maintenance and repair work.
Design and Engineering
Shop and Field Fabrication and Assembly
New Construction
Maintenance and Pipeline Integrity Repairs
Tie-ins and Hot-Taps
In-Service Welding
Pipe-Bending
Procurement
Large Diameter Pipe Work
DOT Piping Construction
Terminal and Station Fabrication
Hydrostatic Testing
Pig Launching and Tracking
Pipeline Purging
Quality Control (CWI) and Weld-Mapping
Sand Blasting
Pipe Coatings and Wraps