supply of nickel screens for centrifugal machnes supply of nickel screens for centrifugal machnes , pure nickel screen for nhec make nk-1100/30 continuous c/f machine chrome thickness 12 micron or aboveaperture 40 micron , opening area 6.5% or abovesize :- 0.06 × 0.30 or above × 2.09 mm or above. , opening area 4.2% or abovesize :- 0.04 × 0.30 or above × 2.09 mm or above. , opening area 9.6% or abovesize :- 0.09 × 0.28 or above × 2.40 mm or above. , pure nickel screen for nhec make nk-1503/30 continuous c/f machine chrome thickness 12 microns or above.aperture 40 micron , opening area 6.5% or abovesize- 0.06 × 0.30 or above × 2.09 mm or above , opening area 5.5% or abovesize- 0.05 × 0.30 or above × 2.09 mm or above , opening area 9.6% or abovesize- 0.09 × 0.28 or above × 2.40 mm or above , pure nickel screen for krupp make nk-1500 continuous c/f machine chrome thickness 12 microns or above.aperture 40 micron , opening area 6.5% or abovesize- 0.06 × 0.30 or above × 2.09 mm or above