Wiltsie holds the following ASME and NB code stamps:

{S} Pressure Part Fabrication, Pressure Piping Assembly & Power Boiler Assembly
{U} Unfired Pressure Vessel Assemblies
{R} Repairs and Alterations to Fired and Unfired Pressure Vessels
{NB} National Board of Pressure Vessel Inspectors

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Certifications, Accreditations, and Qualifications

Wiltsie is certified by the American Society of Mechanical Engineers and the National Board of Boiler and Pressure Vessel Inspectors and holds the following ASME and NB code stamps: 

{S} Pressure Part Fabrication, Pressure Piping Assembly & Power Boiler Assembly

{U} Unfired Pressure Vessel Assemblies

{R} Repairs and Alterations to Fired and Unfired Pressure Vessels

{NB} National Board of Pressure Vessel Inspectors

In addition, we perform our field services in accordance with these codes and standards:

  • ASME Section I, II,VIII and IX of the Pressure Vessel Code
  • ASME B31.1 Power Piping
  • ASME B31.3 Chemical and Petroleum Refinery Piping
  • ASME B31.8 Gas Transmission and Distribution Piping
  • ASME B31.9 Building Services Piping
  • American Petroleum Institute 12F, 650, 620 and 1104 Specifications
  • American National Standards Institute
  • American Welding Society D1.1 Structural Welding Code
  • American Waterworks Association
  • ANSI/AWS D1.1 (American National Standard Institute/American Welding Society) Structural Welding Code
  • ASCE (American Society of Civil Engineers, Manuals and Reports on Engineering Practice for Construction of Steel Penstocks)
  • AWS D1.1 Structural Welding Code
  • Sheet Metal and Air Conditioning Contractors National Association (SMACNA)
  • NYS Steel Construction Manual (NYSSCM)
  • All Customer-Specified Criteria

Wiltsie Construction Co., Inc. • 735 East Seneca Street, Oswego, NY 13126 • P: 315.342.1880 • F: 315.343.8238


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