Prepare Welding Procedure Specifications (WPS) + Procedure Qualifications Record (PQR)

Welding Procedure Specifications (WPS) and Procedure Qualifications Record (PQR) form the backbone of quality and compliance in welding operations for critical industries. At MB Engineering & Inspection Services, we provide expert preparation, validation, and documentation of WPS and PQR to ensure the highest standards of weld quality, safety, and regulatory compliance in line with international codes such as ASME, AWS, API, and ISO.

What are WPS and PQR?

  • Welding Procedure Specification (WPS):
    A formal, written document that details the welding processes, parameters, and materials required to produce welds that meet code requirements and client specifications. It serves as a guideline for welders to ensure repeatability and quality across production.

  • Procedure Qualification Record (PQR):
    The empirical, test-based record of welding trials performed to validate the WPS. It documents actual welding variables, test results (including mechanical properties, NDT results, and visual inspection), and confirms that the proposed procedure yields welds of acceptable quality.

Our WPS & PQR Preparation Process

1. Project & Code Review

We begin by analysing project requirements, material specifications, service conditions, and applicable industry codes (ASME, AWS, ISO, etc.) to determine the optimal welding procedures.

2. Drafting the WPS

Our certified welding engineers develop a detailed WPS covering:

  • Joint design and preparation

  • Base and filler materials

  • Welding processes and positions

  • Preheat, interpass, and post-weld heat treatment

  • Electrical parameters (current, voltage, travel speed)

  • Shielding gases and consumables

  • Acceptance criteria per project specifications

3. Welding Procedure Qualification (PQR)

We conduct test welds under controlled conditions, meticulously recording all variables. Samples are then subjected to mechanical testing (tensile, bend, impact), non-destructive testing (radiography, ultrasonic), and visual inspection to verify compliance.

4. Documentation & Approval

Upon successful qualification, we compile and format the WPS and PQR in accordance with client, contractor, and regulatory requirements. All documentation is ready for submission to third-party inspectors, auditors, or authorities.

5. Welder Training & Support

We provide on-site or remote support to train welders on new procedures and answer technical queries, ensuring smooth implementation and compliance during production.

Key Benefits

  • Quality Assurance: Well-prepared WPS and PQR ensure all welds are uniform, code-compliant, and meet project requirements.

  • Regulatory Compliance: Full documentation supports audits, project approvals, and legal obligations under ASME, AWS, API, ISO, and other standards.

  • Reduced Risk: Minimize weld failures, repairs, and project delays through proven, tested procedures.

  • Efficient Production: Clear guidelines streamline welder performance, reduce rework, and improve overall productivity.

  • Traceability: Comprehensive records support long-term asset integrity and future maintenance.

Industries Served

  • Shipbuilding & Maritime

  • Oil & Gas (pipelines, process vessels, structures)

  • Power Generation & Utilities

  • Petrochemical & Process Industries

  • Heavy Manufacturing & Fabrication

  • Construction & Infrastructure

Why MB Engineering & Inspection Services?

Our welding engineers and inspectors bring decades of experience, certified qualifications, and a deep commitment to quality and safety. MB Engineering & Inspection Services delivers WPS and PQR solutions tailored to the technical, operational, and regulatory demands of your industry, ensuring the highest levels of weld integrity and compliance.

📞 Get in Touch

For detailed quotations or to schedule an inspection:

Email: info@mbeis.com

Phone / WhatsApp: +65 97473004

UEN: 53503151C

Website: www.mbeis.com