DCH 4
DCH 4 is a Downhole Cutting Head (DCH) used for internal cutting of casings and single piles during dismantling of offshore structures. Due to the stepless clamping and the stepless extendable cutting head an extraordinary wide range of casings can be cut with one single tool.
Outer diameter of the inner casing/pile: 70″ to 90″ und 90″ to 118“
Maximum pressure of the water abrasive suspension: 2.500 bar
Stepless clamping
Hydraulic driven
Stepless extendable cutting head
Endless rotation of cutting head
Machinery Directive 2006/42/EC
ATEX Directive 2014/34/EU (optional, II 3 G IIB T3)
Compatible products
HPU (HPU Offshore HPU DCH / PCH)
Do you have any questions?
Our sales team will be happy to help. You can reach us by telephone from Monday to Friday between 8 am and 3 pm.
Blog
World War II Bombs Defused – What Happens Next? Why the Real Challenge Often Begins Afterwards
What happens after a World War II bomb has been defused? This article explains why safe dismantling and disposal are critical—and how modern DEMIL technology with waterjet cutting supports the process.
ANT in March 2026: Subsea Intervention & P&A in Rio & Perth
Two key events, two technical talks: Subsea Intervention & Well Integrity (SPE Rio) and Decommissioning/P&A (EXA Perth). Meet ANT on site.
Meet our ANT EOD experts – two opportunities for a good conversation about explosive ordnance disposal
Visit ANT at ENFORCE TAC 2026 (February 23–25, Nuremberg) or meet us in Bad Kissingen. Live demo: MACE compatible with the ROV tEODor (Telerob). WAS cold cutting for EOD/IEDD.