
DRILLWELL Corebarrels are manufactured from the highest quality materials. The dimensions and physical properties are in accordance with International and safety standards ISO 3551-1 1992 and BS 4019; part 3 ; 1992. The most stringent quality control procedures are employed during all phases of manufacture. Straightness is controlled to 1;1200 or better. All corebarrels are supplied in length increments of 3 & 1.5 mtrs or 10ft & 5 ft. Any other length may be supplied on request.