HP - Perforated Casing - Brochure

The HP Perforated Liner or Pre-perforated Casing is manufacturedwith a 44ft- 88-spindle Drill Press. Joints with sizes up to Ø 18” - lengthRange 3 and grades up to 13Cr110 are perforated in one handling.Our standard spiral and staggered perforation patterns use Ø 3/8” and Ø 1/2” diameter holes, to create the required open area.