Device for internally deburring tubes

Device for internally deburring tubes or shaped tubular sections which are welded along longitudinal seams, comprising a support body having a first end and a second end spaced apart in the cutting direction, said support body having a first surface arranged to face the longitudinal seam and an oppositely facing second surface with said first and second surfaces extending in the direction between said first and second ends, a cutting ring mounted in said support body and projecting outwardly from said first surface, a first guide roller mounted in said support body and located adjacent said cutting ring, said first roller projecting outwardly from said first surface, a second guide roller mounted in said support body and spaced from said first guide roller in the direction between said first and second ends and being more remote from said cutting ring, said second guide roller extending outwardly from said first surface, said first and second rollers being aligned in the first end-second end direction, a one-piece guide element resiliently mounted in said support body, and three third guide rollers mounted in said guide element and projecting outwardly from said second surface, with said third guide rollers being spaced apart in a triangular arrangement in a plane extending through the axes of said third guide rollers.