Casings are manufactured in double-walled version out of tubes of the grade S355 J2G3. Wall thickness ranges between 8 to 10 mm for the inner tube and 12 to 20 mm for the outer tube, according to diameter. Clearance between inner and outer tube is filled by spiral reinforcement. Casings are also deliverable in single walled version, wall thickness according to customers’ requests. Both ends have a male/female casing joint (made out of 25 CrMo4 V, 1.7218) including conical or threaded rings and threaded bolts, accordingly.
Casings can be manufactured to fit to all common drilling rigs and systems. Cutting shoes will be applied with cutting bars or round shank bits according to your wishes and to geology.