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AWS D1.6/D1.6M Qualified Welding Procedure
Qualified Procedures. Proven Performance.
JLL FAB operates with a Welding Procedure Specification (WPS) supported by a Procedure Qualification Record (PQR), qualified in accordance with AWS D1.6/D1.6M — Structural Welding Code – Stainless Steel.
Our procedure establishes documented requirements for GTAW stainless steel welding and is supported by independent qualification testing performed by Maverick Welder & Materials Testing.
Consistent welding requires more than experienced hands. It requires a controlled process.
JLL FAB’s stainless steel Welding Procedure Specification defines the essential parameters used to perform the work, including base materials, filler metals, joint preparation, temperature requirements, shielding gas, electrical parameters, cleaning methods and welding technique.
The supporting Procedure Qualification Record provides documented evidence that the procedure was tested in accordance with AWS D1.6/D1.6M requirements.
Qualification testing was performed by Maverick Welder & Materials Testing using a GTAW weld on 0.375-inch SA-240 Type 304/304L stainless steel with ER308L filler metal.
Qualification testing included:
These results provide documented validation of the procedure used as the basis for JLL FAB’s qualified stainless steel welding WPS.
The qualified procedure doesn’t address only the welding arc. It establishes requirements throughout the welding process.
Surfaces are required to be clean and free from contaminants that could be detrimental to weld integrity, with stainless steel brushing and grinding specified for preparation and interpass cleaning.
The WPS establishes minimum preheat and maximum interpass temperature requirements to help maintain controlled welding conditions.
High-purity argon is specified for shielding and backing gas within defined flow ranges.
The procedure establishes parameters for GTAW welding including amperage, voltage, travel speed, tungsten selection and welding technique.
Finished welds are required to be smooth and free from conditions including visible porosity, cracks, inclusions, incomplete fusion and unacceptable penetration or reinforcement.
For plant managers, engineers, maintenance leaders and procurement teams, a qualified welding procedure provides something valuable:
Critical welding variables are established before production work begins.
The procedure is supported by a formal PQR rather than relying only on shop practice or individual preference.
Qualification testing was performed by a third-party welding and materials testing laboratory.
Documented parameters help JLL FAB approach stainless fabrication with greater process consistency from project to project.
JLL FAB applies its fabrication and field experience to stainless steel projects serving demanding industrial environments, including:
Stainless platforms, safety crossovers, guarding, handrails, equipment modifications and production-area fabrication.
Custom stainless fabrication and equipment support for controlled industrial environments.
Fabrication, installation, repair and modifications for equipment and plant infrastructure.
The more technically accurate description is that JLL FAB operates with a Welding Procedure Specification supported by a Procedure Qualification Record qualified in accordance with AWS D1.6/D1.6M for the scope defined in the procedure.
The WPS covers manual GTAW, commonly known as TIG welding, for the stainless steel scope defined by the procedure.
Procedure qualification and mechanical testing were performed by Maverick Welder & Materials Testing in Texas.
The qualification included visual inspection, transverse side bend testing and transverse tensile testing. The documented test results met the applicable acceptance criteria.
When stainless fabrication is part of your production environment, the quality of the finished work begins with the process behind it.
JLL FAB combines qualified welding procedures with custom fabrication, installation and industrial field support to deliver solutions built around the actual conditions of your facility.
Have a Stainless Steel Project?
Talk with JLL FAB about your fabrication, installation or plant-support requirements.