Main Services / Welding Technology & Welding Inspection Services
Welding is the permanent joining process of two or more metallic or thermoplastic materials using heat, pressure, or filler materials. As the cornerstone of industrialization and heavy manufacturing, welding technology plays a critical role across various sectors—from pressure vessels and steel construction to cross-country pipelines, aerospace, and automotive industries.
At CTI Inspection, as an independent Type A Inspection Body, we audit and certify that all welding technologies used in your industrial plants and manufacturing projects strictly comply with international standards (EN, ISO, ASME, AWS) and technical specifications.
Our Scope of Welding Methods and Inspection Services
Arc Welding Technologies (SMAW, GTAW / TIG, GMAW / MIG-MAG)
We perform full process controls for the most widely used industrial welding methods, including Shielded Metal Arc Welding (SMAW), Tungsten Inert Gas (TIG/GTAW), and Metal Inert/Active Gas (MIG/MAG). We verify that welding parameters (current, voltage, gas flow rate, interpass temperatures) strictly adhere to project specifications and Approved Welding Procedure Specifications (WPS).
Thermoplastic and Plastic Welding Inspection
We offer comprehensive visual and non-destructive inspection services for extrusion welding, butt fusion, and electrofusion joining methods used in HDPE, PP, and PVC piping systems as well as industrial tank fabrication.
WPS / PQR and Welder Certification (ISO 15614 / ISO 9606)
We manage the entire qualification lifecycle: preparing Welding Procedure Specifications (WPS), validating Procedure Qualification Records (PQR/WPQR) through destructive laboratory testing, and certifying your welding personnel in accordance with ISO 9606 and ASME Sec. IX standards.
Non-Destructive Testing (NDT) & Welding Quality Assurance
To identify surface and internal discontinuities in welded joints, we ensure 100% welding quality assurance through Visual Testing (VT), Radiographic Testing (RT), Ultrasonic Testing (UT), Magnetic Particle Testing (MT), and Liquid Penetrant Testing (PT).
Frequently Asked Questions (FAQ)
1. How does independent welding inspection benefit manufacturing projects?
Third-party welding inspection prevents catastrophic structural failures, costly downtime, and rework caused by weld defects (e.g., porosity, cracks, lack of penetration). It guarantees compliance with international standards and CE marking requirements.
2. Which international welding standards do you inspect against?
Our expert engineering team conducts third-party inspections in compliance with ISO 3834 (Quality requirements for fusion welding of metallic materials), EN 1090 (Execution of steel and aluminium structures), and ASME Section IX/VIII standards.