welder certification

Weld procedure specification

MES provides weld inspection services and testing for qualification of welders and weld procedures. We offer these services at an affordable rate with a rapid turnaround.

In today’s environment, there is an increasing emphasis placed on the need for weld quality and safety. Welder qualification to a specific code certifies that welders and welding operators have the ability to make sound welds. Organizations qualify welders or welding operators for each welding process used in production or construction welding. MES helps facilitate this process by providing the testing requirements for submitted weld coupons.

welder performance qualification

There are typically three steps involved in qualifying welders and welding procedure specifications. First, a weld procedure (WPS) must be developed which contains the minimum requirements specified in the welding code. Second, the user must qualify the WPS by submitting weld test coupons. Finally, each individual welder is qualified by creating weld coupons according to variables established in the WPS.

Without internally developed code requirements, many organizations use code established by the American Welding Society (AWS) typically dealing with structural codes for buildings and bridges and the American Society of Mechanical Engineers (ASME) for boiler and pressure vessel codes.

MES is a full-service weld procedure and welder qualification provider with complete in-house resources to step you through the qualification process. Our staff includes Certified Weld Inspectors and Level II Inspectors in Visual Examination. The lab also offers on-site weld inspection services and a full-service machine shop to process weld coupons.


  • Tensile tests (Transverse Welded Joint, All Weld Metal)

  • Toughness testing (Charpy, Izod)

  • Hardness tests (Brinell, Rockwell, Vickers)

  • Bending

  • CTOD (Crack Tip Opening Displacement)

  • Micro Hardness Testing

  • Lap Shear


  • AWS D1.1

  • API 1104

  • ASME

Learn more about our joint lab inspection.


  • Macroetch testing

  • Fillet weld fracture testing

  • Butt weld nick-break testing

  • NDE (VT, PT, MT, RT, UT)

  • Ferrite Exam

  • Chemical Composition


  • Weld coupons developed per specification