What we do
Built around the transmission line
CB Tosun delivers overhead transmission-line work from route preparation and foundations through tower assembly, stringing, commissioning, relocation and repair.

A field-first company since 1981
Cafer Tosun founded the business in Ankara in 1981 to deliver overhead transmission-line projects in Türkiye and abroad. When the second generation joined in 2005, the company was restructured as CB Tosun Limited. Today, the same family-led engineering approach connects headquarters planning with experienced site teams.Delivery
One coordinated field operation
01Foundations
Route and tower-position marking, excavation, reinforcement steel, formwork, concrete placement, protective coating and controlled backfill.
02Tower assembly
Material sorting, ground assembly, lifting and bolt-controlled erection. A standard 18-person crew can assemble about 10 tonnes of tower steel per day.
03Stringing
Insulators, shield wire, conductor pulling, tensioning, compression joints, sagging, clipping-in and special crossings managed as one sequence.
04Relocation and maintenance
Damaged tower replacement, line relocation, conductor and shield-wire renewal, optical ground wire, warning spheres, inspection and fault response.
Capability
Engineering that reaches the field
- Extra-high, high, medium and low voltage transmission systems
- Substation connection lines and city networks
- Underground power and communication cables
- Optical ground wire and conventional communication systems
- Material and equipment supply for transmission lines
- Civil and infrastructure works
Field scale
Crews and equipment scale with the job
Site staffing is configured to project scale, typically from 10 to over 100 people. Excavators, dozers, lifting trucks, compressors, drilling equipment, mixers, tensioners and pullers are deployed around the approved method and terrain.