Pipe Grooving Machine Pipe grooving machine is applicable for channeling of zinc-plated pipes,seamless pipes, ... /4"-6", 2 1/2"-12" inch. Model: GR-B12 Pipe Capacity: 2 1/2” - 12” Max.Wall - Thickness: 10mm ... *650*600(mm) grooving machine, pipe groover, roll grooving machine, roll groover, grooving tools machine, electric pipe groover, hydraulic roll groover pipe grooving machine Hydraulic roll groover