What we do

Built around the transmission line

CBTOSUN delivers overhead transmission-line work from route preparation and foundations through tower assembly, stringing, commissioning, relocation and repair.

1981

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 CBTOSUN Limited. Today, the same family-led engineering approach connects headquarters planning with experienced site teams.

Delivery

One coordinated field operation

Foundations

Route and tower-position marking, excavation, reinforcement steel, formwork, concrete placement, protective coating and controlled backfill.

Tower 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.

Stringing

Insulators, shield wire, conductor pulling, tensioning, compression joints, sagging, clipping-in and special crossings managed as one sequence.

Relocation and maintenance

Damaged tower replacement, line relocation, conductor and shield-wire renewal, OPGW, warning spheres, inspection and fault response.

Capability

Engineering that reaches the field

EHV, HV, MV and LV transmission systems
Substation connection lines and city networks
Underground power and communication cables
OPGW 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 120 people. Excavators, dozers, lifting trucks, compressors, drilling equipment, mixers, tensioners and pullers are deployed around the approved method and terrain.