MDavis Inc


ASME Code Shop

One Source for All

ASME Code Work for Your Fabrication and Repair Needs


Qualified Welders




Years Experience

24/ 0


M. Davis & Sons meets all necessary safety standards and production procedures to be certified as an ASME-authorized Code Facility. With over 30 years experience providing code work, our team of over 100 ASME Section IX and API 1104-qualified welders, and over 50 visual and liquid penetrant examiners are available 24/7 to service our customers. Our 10 Certified Welding Inspectors (CWIs) ensure that all code work is completed safely, with quality, and according to all applicable code requirements.


The M. Davis team is experienced in providing Code Shop services to customers in industries such as:

M. Davis & Sons holds 3 certification stamps:

ASME stamps and National Board stamp logos
ASME stamps and National Board stamp logos

National Board R stamp

for repairs and alterations to pressure-retaining components

ASME stamps and National Board stamp logos

ASME U stamp

for fabrication of pressure vessels

ASME stamps and National Board stamp logos

ASME S stamp

for fabrication of boiler parts

Working in tandem with our Engineering Group, we have the resources to work on large scale projects, but are detailed enough for small, custom projects as well. Offering over 70 years of combined experience, our Engineering Group provides access to finite element analysis software, and assists the Code Shop with: 

Code Work Provided with Quality and Safety

Our certification as an ASME Code Shop enables the M. Davis team to offer:

Design, drawings, and fabrication

  • ASME Section I boiler components
  • ASME piping standards B31.1, B31.3, B31.9
  • ASME S & U Stamps
  • ASME Code Vessels, boilers, tanks, and piping
  • API-Certified Vessel and Piping Inspector
  • API 1104 and ASME Section IX qualified welders
  • National Board R Stamp for alterations and repairs
M.Davis and Sons Welder welding pipe

Welding – Shielded Metal Arc Welding (SMAW), Gas Metal Arc Welding (GMAW), Gas Tungsten Arc Welding (GTAW) – manual or automatic, Flux Core Arc Welding (FCAW)

  • Weld positioners
  • Short arc dual feed welding machines
  • Testing and repairs
  • Vessels
  • Tanks
  • Piping
  • Boilers

Inspections and non-destructive examination

In-house types:

  • Visual Exam
  • Liquid Penetrant Exam
  • U.T. Exams

When you need project solutions done to Code, call on M. Davis & Sons to be your project partner.