- Fabricate grills according to size and space left in windows, ventilators and other openings.
- Use standard size MS steel flat or steel bars according to the requirement.
- Weld corners by flash butt welding or metal arc welding in full length at the joints instead of touch welding only. The joints are finished with grinder.
- Do not leave any cavity holes in welding.
- Avoid punching of holes instead the holes should be drilled
- Fix the grills of wooden or aluminum frames with steel screws. The top of screws is counter sunk; not left outside the grills.
- Give one coat of primer before fixing grills.
- Ensure that corners of grills are at right angle.
- Use the material which is free from rust, cracks, and surface flaws, rough and imperfect edges.
Let’s know more precautions on fabrication of window security grills.
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