Our 30+ years of experience in the high purity sector of semiconductors, specialty chemicals, vacuum and pharmaceutical industries are evidenced in our design, manufacturing and materials knowledge.


Diede Precision Weld certifies to ASME B31.3, ASME section IX, NACE MR-01-75 and Semi. Spec Category M Fluid Piping Systems in the high Nickel alloys and stainless steels.

Welder qualifications

ASME Section IX
Boiler & Pressure Vessel Code

ASME B31.3
Process Piping Code: 5% of the production welds to be radiographed.

Semiconductor & Specialty
Category M Fluid Piping Systems: 20% of the production welds are required to be radiographed.

NACE - MR-01-75
National Association of Corrosion Engineers: Micro-hardness and impact testing.

Consulting Services: Ehrich Diede, Welding Consultant at ehrich@diedeprecisionweld.com.