- No accurate engineering is required because of site fabrication as per
requirement. - No planning is required in procurement hence it does not hamper project
work due to site fabrication activity. - No shortfall or surplus inventory due to as and when required fabrication.
- Total price of cable trays including steel procurement and fabrication is
competitive. - Heavier in weight results bulky in handling. The cable tray looks aesthetically
not good due to lake of quality of site fabrication and painting. - Time consumption in installation including cutting, making bends and joints
etc. is higher than pre-fabricated trays., - These trays tender excellent tensile and bending strength,
- No inflammables in case of fire in the plant,
- May lead to corrosion and rust with water and salt,
c) Pre-Fabricated Ladder Type GI Cable Trays:
These cable trays are used generally in non-chemical industries. Such cable
trays are also preferred in the area where seasonal humidity is observed. Earlier,
these trays were most preferred in coastal area when fiber molded cable trays
were developed. The galvanized steel fabricated cable trays do not corrode
with humid environment. These cable trays are generally used in all over the
industrial segments like cement, steel, power, chemical industries, refineries,
pharmaceutical etc. Following are the key features of these cable trays:
- Accurate engineering is required because of vendor specific procurement
product. - Proper planning is required in procurement to avoid delay in project work
due to non-availability of material. - There are chances of shortfall or surplus inventory due to risk margin
considered during material procurement. - Total cost of cable trays includes cost of steel, galvanizing, fabrication etc.
which is quite competitive in price. - The weight of cable trays per unit length is lesser than fabricated trays
hence easy for in handling, - Time consumption in installation including cutting, making bends and joints
etc. is lesser than fabricated trays being modular design, - These trays tender excellent tensile and bending strength,
- No inflammables in case of fire in the plant,
- The pre-fabricated cable trays are corrosion and rust free from water and salt.