Case Studies

During India's rapid 4G network expansion, one of our telecom EPC clients faced a critical shortfall: their primary tower supplier defaulted on a large tower order with the site commissioning deadline close at hand. The towers — ground-based self-supporting structures ranging from 30m to 50m — required specific wind zone and loading configurations, plus hot-dip galvanizing to IS 4759 standard. Missing the deadline meant contractual penalties from the telecom operator and delayed network coverage across rural Maharashtra.

Indo East activated a dedicated production line and reallocated fabrication capacity as soon as the order was received. Our in-house engineering team worked alongside the client's project engineers to validate drawings and amend tower configurations to match site-specific wind zone requirements. We ran three shifts across our Jangalpur facility, coordinating steel procurement, fabrication, galvanizing, and quality inspection simultaneously. Dispatch was phased by site priority — critical rural sites first — and all towers were bundled, tagged, and pre-matched by site to eliminate sorting delays at destination.

When Indo East first sought Railway Board approval for Steel Channel Sleepers, the challenge was not just manufacturing — it was achieving dimensional tolerances within ±0.5mm across a product that involved multiple rolling, cutting, drilling, and punching operations. Indian Railways has one of the most rigorous inspection regimes for track components: every batch undergoes dimensional verification, load testing, and galvanizing thickness checks. Initial prototype batches revealed warp in the channel section after galvanizing due to thermal stress — a problem that would cause rejection in field inspection.

Our engineering team redesigned the fabrication sequence — introducing a pre-galvanizing straightening step using a hydraulic press fixture, and modifying the galvanizing immersion angle to reduce thermal differential across the web and flange. We also adjusted the steel specification from IS 2062 E250 to E300 to improve stiffness post-galvanizing. Six prototype iterations were tested internally before the final design was submitted to the Railway Board's inspection team. A complete process control checklist was developed and embedded into the production floor workflow.

A State Electricity Board project for rural electrification required substation structures — gantries, equipment supports, and bus bar supports — under mandatory third-party inspection by a government-appointed agency. The inspection regime required mill test certificates for all steel, dimensional checks on every fabricated member, weld quality checks using visual and dye-penetrant testing, and galvanizing thickness verification per IS 2629. The client's EPC contractor had previously faced rejections from another fabricator, setting the project back. They approached Indo East with the residual order and a hard catch-up deadline.

We deployed a dedicated Quality Engineer for the project who worked alongside the third-party inspector throughout production. A material traceability system was set up — each member was tagged with a heat number linked to its mill certificate from the moment steel was received. Fabrication was done in section-wise batches aligned to site erection sequence, allowing concurrent inspection of earlier batches while fabrication continued. Our in-house galvanizing facility allowed us to control immersion parameters and re-galvanize any member below minimum thickness (85 µm) without outsourcing delays.

A large-scale solar project developer required Steel Module Mounting Structures (MMS) for a multi-MW ground-mounted solar park. The challenge was precision: tracker-based solar systems require mounting foundations with strict bolt-pattern tolerances — a hole misplaced by even a few millimetres can misalign the tracker mechanism and cause binding, costing generation. The developer's previous supplier had delivered structures that caused widespread alignment issues in Phase 1 of their project, and Phase 2 supply needed to be flawless.

Indo East implemented a CNC plasma cutting workflow for all hole patterns, with a go/no-go gauge check built into the production process — every structure was verified before moving to the galvanizing stage. We built a dedicated jig for the tracker bolt pattern so that every unit could be dimensionally verified before it moved on. Additionally, we coordinated with the tracker manufacturer's technical team to validate the final drawing before production began, ensuring the structure interfaced perfectly with the tracker pivot hardware.