WPS DEVELOPENT AND QUALIFICATION

Welding Procedure Specification (WPS) & Procedure Qualification (PQR) Services

CWI Services, LLC delivers end-to-end welding procedure development, qualification, and code compliance support for fabrication, construction, and industrial projects across the United States. Our certified welding professionals develop technically sound, fully documented welding procedures that meet ASME, AWS, API, and project-specific code requirements, reducing risk, improving weld quality, and accelerating approvals.

Welding Procedure Specification (WPS) Development

We develop custom, code-compliant Welding Procedure Specifications (WPSs) engineered for repeatable, high-quality welds in real-world production environments. Each WPS is built around your materials, joint design, welding process, and service conditions.

Our WPS development includes:

• Welding process selection (SMAW, GTAW, GMAW, FCAW, SAW, etc.)

• Base material and filler metal compatibility

• Joint design, welding positions, and progression

• Electrical parameters (amperage, voltage, travel speed)

• Shielding gas composition and flow rates

• Preheat, interpass temperature, and post-weld heat treatment (PWHT)

• Essential, supplementary essential, and nonessential variables per applicable code

All WPS documents are prepared to comply with ASME Section IX, AWS D1.1/D1.5/D1.6, API 1104, and other governing standards as required.

WPS Writing & Technical Documentation

Clear documentation is critical to fabrication success. Our team produces professionally written, audit-ready WPS documentation that is easy for welders to follow and inspectors to verify.

We ensure:

• Complete technical detail and traceability

• Clear formatting aligned with industry best practices

• Full alignment with supporting PQR data

• Documentation suitable for client, third-party, or regulatory review

This reduces shop errors, minimizes rework, and supports consistent welder performance.

Procedure Qualification Record (PQR) Development

CWI Services provides full PQR development and oversight, ensuring your welding procedures are properly qualified and defensible under code.

Our PQR services include:

• Qualification test planning and variable control

• Test coupon preparation and welding supervision

• Recording of all required welding parameters

• Verification of essential and supplementary essential variables

• Compilation of complete PQR documentation

Each PQR validates that the proposed WPS can produce welds with acceptable mechanical and metallurgical properties.

Welding Procedure Qualification Testing

We coordinate and manage destructive and non-destructive testing required for procedure qualification, working with accredited testing laboratories to ensure accurate, code-compliant results.

Testing services include:

• Visual inspection (VT)

• Mechanical testing (tension, guided bend)

• Impact testing (Charpy V-Notch), when required

• Additional NDE as specified by code or client requirements

All test results are reviewed and incorporated into final PQR documentation.

Welding Engineering Consultation & Code Compliance Support

Our certified welding inspectors and welding specialists provide expert consultation to support challenging applications and compliance concerns.

We assist with:

• Code interpretation and applicability

• Material selection and weldability analysis

• Welding process optimization

• Addressing nonconformances and procedure revisions

• Owner, engineer, and third-party coordination