Hot-dip galvanizing, and why we brought it in-house
A galvanized coating is the difference between steel that lasts decades and steel that rusts in years. Controlling that coating - rather than buying it - is why the group built its own capability.
Every steel structure in a power project - the tower, the gantry, the support steel - lives outdoors for decades, exposed to rain, heat and corrosion. The only thing standing between that steel and rust is its galvanized coating. A good hot-dip galvanized coating buys decades of life; a poor one fails in years, quietly, until a structure that should have lasted a generation has to be replaced. Controlling that coating, rather than buying it on the open market and hoping, is why the group built its own galvanizing capability through Lattice Zincare.
Coating quality is asset life
Galvanizing looks simple - dip clean steel in molten zinc - and is full of ways to go wrong: surface preparation, bath chemistry, immersion time, coating thickness. Get them right and the zinc bonds metallurgically to the steel and protects it for the life of the asset. Get them wrong and you have a coating that looks fine on day one and is failing where it matters by year five. On a transmission tower that will stand for thirty years in the open, the galvanizing is not a finish; it is the thing that decides how long the tower lives.
Why control beats procurement
When you buy galvanized steel on the market, you inherit someone else's quality decisions and someone else's schedule. When the work is on your own line - galvanizing, heavy fabrication and structural towers under one roof - you control the coating thickness, the fabrication tolerance and the delivery date. For a group running 30+ projects at a time, that control is the difference between a supply chain that serves the projects and one that holds them hostage. Bringing key items in-house is not vertical integration for its own sake; it is buying back control of cost, quality and time on the parts that matter most.
The supply chain you can see
There is a quieter benefit to making the steel yourself: you can see the whole chain. A problem on a tower is traceable to a fabrication batch, a galvanizing run, a specific decision - not lost in a vendor's factory you have never visited. That visibility is worth as much as the cost saving. The group that controls its own critical manufacturing knows exactly what is in its towers, because it put it there.
This essay is an in-house first draft, prepared for Mr. Paresh Ardeshna's review. It expresses general operating opinions on themes within his domain, but no specific event, customer, year or biographical claim has been verified. To be edited, signed off, or replaced before publication.
Got a question on what you have just read - or on power transmission EPC, transformer technical services, renewable energy SPV structuring, or the Indian engineering ecosystem? Write directly to the office.
First-generation Indian industrialist and engineer. Promoter and Director of Hi-Tech Transpower Pvt. Ltd. (est. 2005), a pan-India engineering and EPC services company in power transmission and renewable energy.