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When you hire Holly, you are engaging decades of unrivaled experience – experts who can cost-effectively address your mechanical needs today, while keeping future needs in mind throughout the process. Holly has dedicated project managers and engineers on staff, offering robust expertise and technical support for an array of complex mechanical undertakings. Our vast experience includes projects of all sizes, having completed millions of man hours in construction, maintenance and turnaround projects.

  • Shop and Field Fabrication
  • Maintenance and Repair
  • Bolt-up and Assembly
  • Pump Setting and Alignment
  • Heat Exchanger Bundles
  • Set and Align Rotating Equipment
  • Sewer Installation
  • Loading Racks
  • Gas Distribution
  • Start-Up Services
  • Isolation Services
  • Terminals
  • Compressor Stations
  • Pump Stations
  • Refineries
  • Power Plants
  • Waste Water