Substation & Transmission Structures

Indo East supplies substation structures, transmission line towers and distribution steelwork from 33 kV to 765 kV — bus posts, gantries, equipment supports, deadend structures, lightning masts, and suspension, tension, deadend and transposition towers. Steel is IS 2062, design references are IS 802 and IS 875 Part 3, and galvanizing is IS 2629 and IS 4759 at 85+ microns on our own kettle.

We are an approved vendor to WBSEDCL, WBSETCL, OPTCL, BSPTCL, NBPDCL and SBPDCL among other state electricity boards, and to L&T, ABB, Siemens, Alstom T&D and Polycab. There are dedicated pages for substation structures, transmission line towers, monopoles and earthing materials.

Substation Structures and Transmission Towers by Indo East

Power Infrastructure

Power Transmission & Substation Structures

Our power infrastructure range covers the full spectrum from 33kV to 765kV — substation structures, transmission line towers, and distribution structures. We are an approved vendor for WBSEDCL, WBSETCL, OPTCL, BSPTCL, NBPDCL, SBPDCL, and numerous other State Electricity Boards and engineering companies including L&T, ABB, Siemens, Alstom T&D, and Polycab.

All power structures are engineered for longevity in harsh outdoor environments. Our hot-dip galvanizing provides decades of corrosion protection, significantly reducing maintenance costs over the structure's lifetime.

Parameter	Specification
Voltage Range	33kV, 66kV, 110kV, 220kV, 400kV, 765kV
Structure Types	Bus Post, Gantry, Deadend, Lightning Mast
Tower Types	Suspension, Tension, Deadend, Transposition
Material	IS 2062 Gr. A, B, C; IS 8500; IS 1239 pipes
Galvanizing	IS 2629 / IS 4759 — 85+ microns
Insulators & Hardware	Polymer (composite) insulators, pole line hardware and fittings
Solar Module Mounting Structures	Module Mounting Structures for utility solar
Standards	CEA, IS, IEC and customer specifications

33kV / 66kV Substations 220kV / 400kV Substations Transmission Line Towers Solar Module Mounting Feeder Pillars Lightning Masts Polymer Insulators Pole Line Hardware

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Substation Structures

Bus posts, gantries, and equipment supports for 33kV–765kV switchyards.

Transmission Towers

All tower types for EHV lines — suspension, tension, deadend, and angle towers.

Solar Module Mounting Structures

Module Mounting Structures for utility-scale and rooftop solar projects.

Distribution Structures

11kV and 33kV structures for state distribution utilities.

Polymer Insulators

Composite polymer insulators and pole line hardware supplied alongside our distribution and transmission structures. Ratings quoted against the customer's specification.

Everything for Power Transmission & Distribution

The whole power range, in one place

Substation and transmission structures, line hardware and earthing materials — all of it fabricated and hot-dip galvanized on one floor at Jangalpur, Howrah, to IS 2062 steel and a 75–85 micron coating read on a calibrated gauge, batch by batch. One company is accountable for the fabrication and for the coating.

Item	What it is	Standards	Detail
Substation structures	Gantries, equipment supports, take-off structures and lightning masts for 33 kV to 765 kV substations	IS 2062; IS 875 Part 3; IS 802	Substation structures →
Transmission line towers	Lattice towers and tower parts fabricated to the utility drawing	IS 802; IS 875 Part 3	Transmission line towers →
Monopoles	Tubular and polygonal poles for distribution and transmission, where right of way is tight	IS 2062; IS 875 Part 3	Monopoles →
Pole line hardware	Cross arms, stay sets and rods, plates, brackets, yoke plates, clamps and dead-end fittings for 11 kV and 33 kV lines	IS 2486 Parts 1–4; IS 2141 stay wire	Pole line hardware →
Earthing materials	Electrodes, strip, clamps and accessories for substation and line earthing	IS 3043	Earthing materials →
Foundation and anchor bolts	The structure-to-foundation interface, in the grade the design calls for	IS 1367, classes 4.6, 5.6 and 8.8	On this page
Hot dip galvanizing	All of the above, dipped in our own 7 metre kettle rather than sub-contracted	IS 2629; IS 4759; ASTM A123 or EN ISO 1461 where specified	Galvanizing →

Send the drawing, the bill of materials or the tender specification and we will price it line by line. Third-party inspection by SGS, Bureau Veritas, TÜV, DNV or Intertek is supported at stages agreed before production.

Power Structure FAQ

Frequently Asked Questions

What voltage classes does Indo East build substation and transmission structures for?

33 kV, 66 kV, 110 kV, 220 kV, 400 kV and 765 kV - covering substation structures, transmission line towers and 11 kV / 33 kV distribution structures.

Which substation structure types are manufactured?

Bus posts, gantries, deadend structures, lightning masts and equipment support frames for 33 kV to 765 kV switchyards, plus feeder pillars.

Which transmission tower types do you fabricate?

Suspension, tension, deadend and transposition towers for EHV lines, fabricated to the utility's or EPC contractor's approved drawings.

What material and galvanizing specification are power structures built to?

IS 2062 Grades A, B and C, IS 8500 high-strength steel, and IS 1239 pipes. Hot-dip galvanizing is to IS 2629 / IS 4759 with a coating of 85+ microns.

Which utilities has Indo East been approved by?

Approved vendor for WBSEDCL, WBSETCL, OPTCL, BSPTCL, NBPDCL and SBPDCL among other State Electricity Boards, and for engineering companies including L&T, ABB, Siemens, Alstom T&D and Polycab.

Which design standards are followed?

CEA, IS, IEC and BS standards, or the customer's own specification where one is issued.

Is galvanizing carried out in-house?

Yes. Fabrication and hot-dip galvanizing happen on the same Howrah site, in a 7-metre kettle (7 m x 1.2 m x 1.6 m). Nothing is sent out for coating.

Does Indo East supply polymer insulators and pole line hardware?

Yes. Composite polymer insulators, pole line hardware and fittings are part of the power range and are supplied alongside our substation, transmission and distribution structures, so a utility or EPC buyer can source the structure and its hardware from one vendor. Voltage class, creepage and mechanical rating are quoted against the customer's specification.

Do you accept third-party inspection?

Yes. Power structures are routinely supplied against third-party inspection to utility specifications.

Substation Structures & Transmission Towers