CGL Engineering Co., Ltd. (CGL) is Thailand’s leading corrosion engineering company specializing in all facets of cathodic protection (CP) and related fields for 15 years and counting .

CGL Engineering is a full-service CP engineering consultancy and installation service firm serving both the private and public-sector clients.
CGL Engineering commenced operation in Bangkok in 2002. The office is managed by Principle Engineers, who have a wealth of experience in the corrosion prevention industry. Subsequently, a new office was established in Rayong.

Our purpose is to provide Engineering solutions in a pragmatic, responsive, and professionally sound manner, with total commitment to customer satisfaction in each and every project we undertake.

Our goal is to be a leading provider of cathodic protection, grounding, lightening systems and its related products, services and setting the standards of excellence within the industry. We want to win customers for life.

Committed to Cathodic Protection

We take pride in providing quality services and products on time. We endeavor to perform Design, Installation & Commissioning for all our projects by consistently meeting the Project requirements as per National Association of Corrosion Engineers (NACE) standards while delivering sustainable projects that are a superior value to the owner.

Committed to Grow

We constantly push ourselves to provide the best service and products for onshore and offshore projects. We have partnered with the best companies in the world.


What we do?

Exclusive Service

We design, install, commission cathodic protection, AC mitigation devices, Grounding, Lighting and Lightening System. we supply world class Remote Monitoring Units (RMUs), Transformer Rectifier Units (TRUs), AC mitigation CP survey and monitoring equipment, pin brazing equipments

CATHODIC PROTECTION Cathodic protection (CP) is a technique used to control the corrosion of a

Cathodic Protection Design, Installation & Commissioning

AC MITIGATION The location of steel pipelines in the vicinity of AC power transmission facilities

AC Mitigation Design, Installation & Commissioning

GROUNDING system In an electrical installation, an earthing system or grounding system connects specific parts

Grounding, Lighting & Lightening Systems Design, Installation & Commissioning

Close Interval Potential Surveys (CIPS) Close Interval Potential Survey (CIPS) technique is an inspection system

CIPS&DCVG and Pipe Locator Surveys

Polarization Cell Replacement (PCR) PCR is a solid state decoupler devices which conduct once a

DC Decouplers and Spark Gaps

FLANGE ISOLATING GASKET KITS Flanges, the most common trouble area, need to be sealed properly

Our clients