Founded in 1944 as the General Descaling Company, GD Engineering, now a brand of Celeros Flow Technology., is a market leader in the design and manufacture of pipeline pigging solutions to the Oil, Gas and Process industries worldwide.
We manufacture a range of innovative and proven products including the industry leading Bandlock™2 Closure, Hi-T Pigalert™ Scraper Passage Indicator , Automated Multiple Pig Launcher and associated equipment.

1-Quick Opening Closure – Bandlock™ 2

The GD Bandlock™2 is the original and benchmark design for global high-pressure applications, providing horizontal or vertical access to any pressure vessel in seconds – any size of unit can be opened or closed in less than a minute, with no special tools required.

2-Hi-T Intrusive Pigalert™

The Hi-T Pigalert™ is simple to install and operate and provides simple visual indication of pig or sphere passed status with a single action reset.

The trigger mechanism has been extensively tested with online Inspection pigs and carries full National Grid approval.

3-Non-Intrusive Pig Signaller Devices

The Hi-T Magalert and Hi-T Ultralert are robust non-intrusive pig signaller devices that use “magnetic” and “ultrasonic” detection principles respectively to detect, signal and log the passage of pigs at critical points along a pipeline. The Hi-T Magalert and Hi-T Ultralert devices can be used for both onshore and offshore installations.