| Hot dip galvanization. (IS 2629) | ||
| Galvanizing | Minimum thickness: | Min. weight: |
| MS flats 5mm thick & over | 75 microns (minimum) | 610 gms. / sq. mtr. |
| MS flats under 5mm thickness | 60 microns (minimum) | 460 gms. / sq. mtr. |
| Pipes/ conduits with thickness & over 5 mm | 75 microns (minimum) | 610 gms. / sq. mtr |
| Pipes/ conduits with thickness under 5mm | 60 microns (minimum) | 460 gms. / sq. mtr |
| GI Wire | 20 Microns (Medium coated) | 150 gms. / sq. mtr. |
| OVERLAPING OF EARTHING STRIP | |
| Size of Earthing Strip | Minimum Over Laping |
| 20×3 | 20MM |
| 20×6 | 20MM |
| 25×3 | 25MM |
| 25×6 | 25MM |
| 32×6 | 25MM |
| 40×5 | 50MM |
| 40×6 | 50MM |
| 50×6 | 50MM |
| 50×10 | 50MM |
| 75×6 | 50MM |
| 75×10 | 50MM |
| NO’S AND SIZE OF NUT BOLT FOR JOINTING EARTHING STRIP | ||
| Size of Earthing Strip | Minimum Nut Bolt Required | Minimum Size of Nut Bolt |
| 20×3 | 2 NO’S | 8X25MM |
| 20×6 | 2 NO’S | 8X25MM |
| 25×3 | 2 NO’S | 8X25MM |
| 25×6 | 2 NO’S | 8X25MM |
| 32×6 | 2 NO’S | 8X25MM |
| 40×5 | 4 NO’S | 8X25MM |
| 40×6 | 4 NO’S | 8X25MM |
| 50×6 | 4 NO’S | 10X25MM |
| 50×10 | 4 NO’S | 10X25MM |
| 75×6 | 4 NO’S | 10X25MM |
| 75×10 | 4 NO’S | 10X25MM |
| Weight of G.I. wire (Steel Tube India) | ||
| Gauge Gms. | mm | Weight Kg / Meter. |
| 4 | 5.892 | 0.216 |
| 6 | 4.876 | 0.148 |
| 8 | 4.064 | 0.103 |
| 10 | 3.251 | 0.066 |
| 12 | 2.641 | 0.045 |
| 14 | 2.032 | 0.026 |
| 16 | 1.625 | 0.017 |
| Weight of G.I Flat Strip | ||
| Sizes in (HxW) | Kgs/Per meter | Application |
| 20×3 mm | 0.49 | Lighting Arrestor |
| 20×6 mm | 0.98 | PLC Panel |
| 25×3 mm | 0.6 | |
| 25×5 mm | 0.97 | |
| 25×6 mm | 1.3 | Control & Relay Panel |
| 32×5 mm | 1.21 | Lighting Panel & Local Panel |
| 32×6 mm | 1.625 | Distribution Board |
| 40×3 mm | 0.964 | Motors 5.5kw-55Kw |
| 40×5 mm | 1.476 | |
| 40×6 mm | 1.92 | HT switchgear, structures, cable trays & fence, rails, gate and steel column |
| 50×3 mm | 1.28 | |
| 50×5 mm | 1.92 | |
| 50×6 mm | 2.56 | |
| 50×10 mm | 4 | Transformers Substations |
| 62×6 mm | 3.07 | |
| 65×10 mm | 5.2 | |
| 75×10 mm | 6 | |
| 75×12 mm | 7.2 | |