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 200-tower order with less than 8 weeks remaining to the site commissioning deadline. 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 within 48 hours of receiving the order. 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 400+ 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, delaying the project by 4 months. 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.

Preparing for an international export order presented challenges that go well beyond manufacturing. The buyer — an infrastructure contractor in Sub-Saharan Africa — required steel structures packed for ocean freight in a manner that would survive a 3-week sea journey and port handling without corrosion or dimensional damage. Additionally, the export documentation needed to comply with the importing country's customs requirements: country of origin certificates, mill test certificates with third-party countersignature, packing lists with individual member weights, and ISPM-15 compliant timber in all wooden packing. Indo East had not previously executed a direct export order and needed to build this capability from scratch.

We engaged an export documentation specialist and a freight forwarder with African trade experience. A new packing protocol was developed: all galvanized members were wrapped in HDPE stretch film to prevent white rust during transit; bundles were secured with steel strapping on ISPM-15 certified timber dunnage; and each bundle was labelled with QR-coded member lists for easy site sorting. All certifications — including our IEC certificate, ISO 9001 certificate, and mill test reports — were apostilled as required. The entire documentation set was submitted for pre-shipment verification 10 days before the vessel's cut-off date.

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 — holes misplaced by even 3mm can misalign the tracker mechanism and cause binding, reducing generation efficiency by up to 12%. 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 created a specific jig for the tracker bolt pattern that allowed 100% dimensional verification in under 60 seconds per unit. 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.

A batch of galvanized steel structures supplied for a Gulf-region project arrived at the destination with patchy white rust (zinc oxide bloom) on 15% of members — a cosmetic issue that the client flagged as a contract non-conformance, despite the underlying zinc coating being fully intact. White rust typically forms when freshly galvanized steel is stacked without adequate air circulation in humid conditions, and is fully reversible — but the client lacked the knowledge and was threatening to reject the entire consignment, which would have been a significant loss for both parties.

Within 24 hours, Indo East dispatched a detailed technical white paper to the client explaining the nature of white rust per ISO 14713 — that it is a surface zinc oxide bloom, not base metal corrosion, and does not affect the corrosion protection lifespan. We also provided remediation instructions: brushing with a stiff nylon brush and diluted phosphoric acid solution followed by a light oil application. Simultaneously, we revised our own export packing protocol — adding ventilation spacers between members in every bundle to prevent moisture trap, which has prevented recurrence on all subsequent shipments.