Opening-Ratio Calculation
Woven metal mesh/TUFFLEX
Square mesh
Ton-cap
Different-diameter ton-caps
Perforated wire mesh
Round hole
By inputting the value of the round-hole diameter D and the center-to-center distance between the holes, center pitch C, the opening ratio (%) is calculated automatically. As formulas are different for houndstooth punching and parallel holes, use the appropriate form for the calculation.
Round hole, 60° houndstooth punching
Round hole, parallel
Square hole
By inputting the value of squared-hole diameter W and pitch C (W + B), the sum of the hole diameter and frame width, opening ratio (%) is calculated automatically. As formulas are the same for houndstooth punching and parallel holes, use the same form for the calculation.
Slotted (cloud)
Input the vertical size (slotted-hole diameter B) and horizontal size (hole length L). By inputting the distance Z2 (L + S), the distance from the start of a horizontal hole to the start of the next hole, and the center pitch Z1, the center-to-center distance from the vertical hole to the next hole, opening ratio (%) is calculated automatically.
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