Flame Cutting Tolerances
Profiling Tolerances for Lengths and Widths
For rectangular profiled steel plates, where length L, is defined as the greater of the two dimensions, tolerances on length and width shall be as given in Table 1.
For non-rectangular profiled steel plates, tolerances will be as given in Table 1, where length L shall be assumed to be the maximum dimension of the part in question.
Circles and Rings
For profiled steel circles and rings length L, will be understood to be the outside diameter of the part in question and tolerances will be as given in Table 1.
All profiling tolerances given in Table 1 are inclusive e.g. 4mm shall be understood to mean +/-2mm, but by arrangement may be defined as +4/-0mm or +0/-4mm.
|Table 1. – Length and Width Tolerance for Profiled Steel Plates|
|Material Thickness||Under 500mm||500mm to under 1500mm||1500mm to under 3000mm||3000m and over|
|Up to 10mm||4mm||5mm||6mm||8mm|
|Over 10mm to 25mm||5mm||6mm||8mm||10mm|
|Over 25mm to 50mm||6mm||8mm||8mm||10mm|
|Over 50mm to 100mm||8mm||10mm||10mm||12mm|
|Over 100mm to 200mm||10mm||10mm||12mm||12mm|
For rectangular profiled steel plates, where length L is defined as the greater of the two dimensions, the difference between the two diagonally opposite corner to corner dimensions shall be no greater than those shown in Table 2.
For non-rectangular shaped profiled steel plates, due to the difficulty in defining squareness, any specific requirement should be agreed with Charles Day Steels Ltd prior to order placement.
|Table 2. – Dimensional Squareness Tolerances for Profiled Steel Plates|
|Difference between the corner to corner dimensions for Length L|
|Material Thickness||Under 1000mm||1000mm to Under 2000mm||2000mm to Under 3000mm||3000mm and over|
|Up to 40mm||4mm||5mm||6mm||7mm|
|Over 40mm to 100mm||5mm||5mm||6mm||7mm|
Profiling Edge Squareness
The deviation for edge squareness accuracy, W, for profiled steel plates shall not exceed the value shown in Table 3.
|Table 3. – Profiling Edge Squareness|
|Material Thickness||Deviation W|
|Up to 10mm||0.5mm|
|Over 10mm to 25mm||1mm|
|Over 25mm to 50mm||2mm|
|Over 50mm to 100mm||3mm|
|Over 100mm to 200mm||4mm|