Custom Fabrication

GF Piping Systems has been an industry leader in the development and supply of pipe, valves, fittings, and fusion technology since 1802. Our Custom Products complement a complete system solution.



  • Mechanical Engineering support
  • CAD
  • Material selection
  • Conceptual design
  • Space planning and system layout

R&D and Testing

Welding Technologies


  • CNC machining
  • Parts programming
  • “Dry” machining only


  • Class 10,000 cleanroom welding
  • Class 100 valve assembly



  • Custom products that support GF standard products
  • Modify existing GF products
  • Custom machining of core materials
  • Piping assemblies and spools
  • Subassemblies
  • Skids and system assemblies
  • Valve boxes and cabinets


  • Fast response and quick turn-around
  • Fabricators are qualified to ASME B31.3
  • Significant materials-of-construction knowledge
  • Proven experience in machining and welding

Industries Served

  • Institutions/Schools
  • Semiconductor
  • Water/Wastewater
  • Cooling/Refrigeration
  • Shipbuilding