Sunland's DHB Division serves the corrosion and cathodic protection industry by providing a cost-effective alternative to more expensive monitoring or pipe replacement by bringing problem cased crossings into compliance with Federal and State Regulations. We accomplish this through the use of DHB's patented end seals, tested to 50 psi, in conjunction with the appropriate casing filler. This unique specialized division has over 10 years experience.
• Site preparation and excavation to expose problem area • Installation of DHB patented end seals which isolate the
problem section of cased crossing casing/carrier pipe • Fill crossing annular space with high-dielectric
casing filler or other material which provides a
corrosion inhibiting environment and corrects the
shorted electrical circuit • Removal of casings • Casing extensions
Our experience includes:
• Over 1,000 cased crossings successfully repaired • Crossings successfully repaired to depths of 40 feet • Crossings up to 5,400 feet with 100 foot elevation changes • Numerous major interstate crossings in urban areas • Sealed multiple pipelines in cased crossings • Overhead cased crossings