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LIVE PRODUCTION
Transmission & Power Infrastructure

Transmission Line Towers

Lattice steel towers for HV and EHV power transmission.

MaterialIS:2062 Grade E250 / E300 / E350 Angles
FinishHot-Dip Galvanized to IS:4759 / ASTM A123

Transmission Line Towers — Overview

India Electricals Syndicate fabricates hot-dip galvanized lattice steel transmission towers at Howrah for 33 kV, 132 kV, 220 kV, 400 kV and 765 kV lines. A transmission tower carries conductor, wind and ice loading for decades in the open environment; tower reliability depends on certified angle steel, accurate hole-punching and proven galvanizing — each controlled and documented by IES.

Towers are manufactured from IS:2062 angle sections to PGCIL, CEA and state-utility type designs, with full mill-test traceability and pre-assembly proof-checking so members fit at site without rework. Angles are precision-punched on the design grid and hot-dip galvanized for the line’s outdoor design life, then proto-assembled to verify geometry before bulk despatch.

Every tower ships with mill certificates, galvanizing records and assembly drawings for utility inspection. Share your tower type, line voltage and bill of quantities with a quote request and the Howrah engineering desk will return a fabricated tower offer.

Technical Specifications

Voltage Class33 kV — 765 kV
Tower TypesSuspension / Tension / Dead-End / Transposition
Member Steel GradeIS:2062 E250 / E300 / E350
Galvanizing86 microns min. (IS:4759)
Bolt Grade5.6 / 8.8 HDG
Proof AssemblyYes (per IS:802 Part 3)

Applications

  • 33–66 kV distribution
  • 132–220 kV transmission
  • 400–765 kV EHV
  • Substation gantries
  • Railway traction
  • Renewable evacuation

Frequently Asked Questions

Which line voltages does IES supply towers for?+

33 kV, 132 kV, 220 kV, 400 kV and 765 kV transmission lines, to PGCIL, CEA and state-utility type designs.

Is the steel traceable?+

Yes — IS:2062 angle sections with full mill-test traceability and pre-assembly proof-checking before despatch.

How are towers protected against corrosion?+

Hot-dip galvanized for the line’s outdoor design life, with galvanizing thickness records supplied for inspection.

Where are they fabricated?+

At India Electricals Syndicate, Howrah, Kolkata — in continuous manufacture since 1972.