The DDT® pigging system is a fully proven and extremely effective process that removes coke build up from heater tubes in a series of highly controlled incremental cleaning runs.

Because the DDT® process is much more effective than steam air decoking, chemical cleaning or any other mechanical cleaning method, you the customer, experience all the economic benefits of an increased run length, longer tube life, lower fuel usage and improved furnace reliability.

DDT®´s bi-directional Pigg control method enables the cleaning of furnaces which incorporate reducers and changing pipe diameter without having to make any modification. It will allow localised aggressive cleaning of the most contaminated section of furnace, thus maximising cleaning performance.