In structural fabrication and pressure vessel construction, welding quality is governed by documented procedures — not improvisation. Two essential documents form the foundation of compliant welding: the Welding Procedure Specification (WPS) and the Procedure Qualification Record (PQR).
At Excel Engineering, all specialized fabrication and welding work is performed to WPS and PQR standards.
What Is a Welding Procedure Specification (WPS)?
A WPS is a formal document that describes how a specific weld joint must be made.
What Is a Procedure Qualification Record (PQR)?
Before a WPS can be used in production, it must be qualified through testing.
A qualified weld is not just about appearance — it must meet defined mechanical properties and pass rigorous testing before it can be trusted in service.