Perforated Liner or Pre-perforated Casing is
manufactured with a 44ft- 88-spindle Drill Press. Joints with sizes up to
? 18" – length Range 3 and grades up to 13Cr110 are perforated in
one handling.

Our standard spiral and staggered perforation patterns use ? 3/8"
and ? 1/2" diameter holes, to create the required open area.

Upon request, custom hole sizes can be drilled in any
number and any pattern.

 Every joint perforated by H.P. Well Screen is deburred internal and
external as well as drift tested according to API standards. Every hole
is visually inspected and cleaned of burr material.
The size, grade and weight of the base-pipe are according to API
casing or tubing specification.