Our Services

4L Inspection provides comprehensive nondestructive testing, welding inspection, and quality assurance services for pipeline, oil & gas, structural steel, fabrication, and industrial projects.

Digital Radiography — CR / DR

Advanced digital radiographic inspection providing high-quality images, rapid results, and efficient field inspection without traditional film processing.

Phased Array Ultrasonic Testing — PAUT

Advanced ultrasonic technology for accurate weld examination, flaw detection, sizing, and documentation on critical components and piping systems.

Ultrasonic Testing — UT

Conventional ultrasonic inspection including thickness measurements and shear-wave weld examination for piping, structural steel, vessels, and fabricated components.

Magnetic Particle Testing — MT

Surface and near-surface discontinuity detection on ferromagnetic materials, including welds, structural components, and fabricated parts.

Liquid Penetrant Testing — PT

Reliable surface-breaking discontinuity detection for ferrous and non-ferrous materials.

Certified Welding Inspection — AWS CWI

AWS Certified Welding Inspectors providing visual weld inspection, welding procedure review, welder qualification, documentation, and code compliance verification.

Structural Steel Inspection

Inspection of structural steel fabrication and erection, including welds, connections, bolting, and NDT in accordance with applicable AWS requirements.

PMI & Hardness Testing

Field verification of material composition and hardness to support material identification, quality control, and specification compliance.

Welder Qualification & Requalification

Welder testing and qualification services performed to applicable AWS, ASME, and API requirements.

PWHT

Post-weld heat treatment support and verification for piping, pressure components, and welded assemblies requiring controlled heating and documented temperature cycles.

Quality You Can Trust. Results You Can Count On.