Ring & Cylinder


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AAR Certified Nozzles and Bonnets

Nozzle and bonnet assemblies are crucial components of railcar construction. Millerbernd rolled rings and cylinders provide the basis for assemblies that stand the test of time, no matter what passes through. American Association of Railroads (AAR) Certified, and available in carbon and stainless steel, our rolled and flash welded components are the trusted source when safety and service life are top priorities.

Designed & Fabricated to Your Specifications

Rail part

Rolled Rings:

  • 1/4 up to 5-inch thick bar rolled the “Easy Way” or “Hard Way”
  • Diameters from 6 to 120+ inches
  • Flash welding from 1/2 up to 24 square inch cross-sections
  • Custom CNC machining
  • Rough machining of all surfaces up to 120-inch diameter
  • CMM Inspection Reports

Rolled Cylinders:

  • Diameters from 7 up to 144+ inches
  • Single-piece construction of plate widths up to 120 inches
  • Wall thickness from . up to 4 or more inches
  • Machining of interior and exterior surfaces
  • Custom drilling and boring