What Çiltuğ does

Çiltuğ Isı Sanayi ve Tic. A.Ş. is a Gaziantep, Turkey-based heavy steel fabrication and engineering contractor founded in 1971, specializing in equipment and turnkey construction for renewable energy infrastructure. The company designs and manufactures hydromechanical equipment (turbine embedded parts, spiral cases, draft tubes, butterfly valves, penstocks), electromechanical components (speed rings, runners), and steel wind towers for hydroelectric and wind power projects, alongside ASME-certified pressure vessels and storage tanks for the oil & gas sector. Manufacturing is anchored in two Gaziantep factories with 15,000 m² enclosed and 39,000 m² open production area, including a 5-axis CNC machine capable of machining single parts up to 250 tons, a heat treatment furnace up to 1,000°C, and an annual capacity of 80 wind towers (up to 105 tons each).

The business operates as a project-based B2B enterprise contractor, generating revenue through one-time equipment fabrication contracts and professional services for installation, civil works, and ongoing maintenance. GTM is direct enterprise sales via competitive bidding on large infrastructure tenders; clients include Turkish state utilities (DSİ, TPAO), international OEMs (Alstom, GE, Nordex), governments (Iraq Ministry of Petroleum, Pakistan WAPDA), and independent power producers (TEKTUĞ). Pricing is custom-engineered per project, with single contracts ranging from 10 to 5,000 tons of fabricated steel. The company is privately held (A.Ş. form), appears family-controlled through a sister entity TEKTUĞ Elektrik Üretim, and holds a portfolio of international certifications (ISO 9001:2015, ASME U&S, EN ISO 3834-2, EN 1090, EYDEP ES 101-C defense certification) that qualify it for cross-border tenders across 10+ countries.

Name

Çiltuğ

Legal name

Çiltuğ Isı Sanayi ve Ticaret A.Ş.

Website

https://ciltug.com

Company type

Private

Founded year

1971

Operating status

Operating

Headcount range

101–250 employees

Short description

Çiltuğ is a Gaziantep-based heavy steel fabrication and engineering contractor founded in 1971, manufacturing hydroelectromechanical equipment, wind towers, and pressure vessels for energy infrastructure projects across 10+ countries.

Ownership category

akta.pro rank

Product category

Heavy Steel Fabrication for Energy Infrastructure

NAICS

Iron and Steel Pipe and Tube Manufacturing from Purchased Steel (331210), Turbine and Turbine Generator Set Units Manufacturing (333611), Engine, Turbine, and Power Transmission Equipment Manufacturing (3336), Fabricated Pipe and Pipe Fitting Manufacturing (332996)

SIC

Steel Pipe & Tubes (3317), Water, Sewer, Pipeline, Comm & Power Line Construction (1623)

akta.pro primary industry

Pipe & Tube Manufacturing (Seamless & Welded OCTG/Line Pipe/Structural Tube) (IMAKABAI)

akta.pro secondary industries

Metals & Steel Mill Facility Construction (IMAFADAF), Bridge & Infrastructure Steel Components (IMADACAL)

Keywords

• Heavy steel fabrication
• Hydroelectric equipment manufacturing
• Wind tower fabrication
• Pressure vessel manufacturing
• Turnkey power plant construction

Headquarters

HQ city

Gaziantep

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Personnel, Supply Chain, Operations, Infrastructure, Technology or R&D, Marketing or Sales

Revenue model

1. Equipment Manufacturing: Fabrication and supply of heavy steel equipment for hydroelectric plants (turbines, penstocks, valves), wind towers, and pressure vessels. Projects range from 10 tons to 5,000 tons of fabricated steel per contract.
2. Installation and Construction: Turnkey civil and electromechanical installation works for HES projects including complete construction, equipment manufacturing, and erection. Includes domestic and international contracts.
3. Maintenance and Repair Services: Ongoing maintenance contracts and spare parts supply for hydroelectric and wind energy equipment. 7 days, 24-hour service available. Includes condition assessment, consulting, training, renovation and development services.

Go-to-market motion1 record

Distribution channels1 record

Marketing channels4 records

Core offering

Çiltuğ designs, manufactures, and installs heavy welded steel equipment and complete turnkey systems for renewable energy and industrial infrastructure. Its core offering covers hydromechanical and electromechanical components for hydroelectric power plants (spiral cases, penstocks, draft tubes, butterfly valves, turbine embedded parts), steel wind tower fabrication and installation, ASME-certified pressure vessels and storage tanks, plus 24/7 maintenance, repair, and turnkey civil construction services. Projects range from 10 tons to 5,000 tons of fabricated steel per contract and are delivered to state utilities, international energy majors, and government ministries worldwide.

Product overview

Çiltuğ Isı Sanayi ve Tic. A.Ş. is a heavy machinery and steel fabrication company founded in 1971, specializing in welded steel manufacturing and engineering for the energy sector. The company operates two factories in Gaziantep, Turkey with a combined 15,000 m² enclosed and 39,000 m² open area. The product portfolio consists of six core offerings: (1) Hydromechanical Equipment & Penstocks for hydroelectric power plants including turbine components, valves, and penstock pipes; (2) Electromechanical Equipment including draft tubes, spiral cases, and speed rings; (3) Wind Power Turbine Generators, Tower Fabrications & Installations with 80 towers/year capacity; (4) Pressurized Vessels & Tanks for petroleum and chemical industries; (5) Maintenance and Repair Services providing 7/24 support for HES and RES facilities; and (6) Turnkey Civil & Contracting Works for complete hydroelectric plant construction. The company also executes extensive domestic and international HES projects, infrastructure projects, and industrial tank projects across Turkey, Iraq, Pakistan, Finland, Cambodia, Norway, Libya, Kuwait, and North Cyprus.

Differentiator

Problem solved

Functional benefit

Products and services

• Hydromechanical Equipment & Penstocks Manufacturing and installation of hydromechanical equipment and penstocks for hydroelectric power plants, including turbine pit linings, Francis/Kaplan/Pelton turbine embedded steel linings, distributors, collectors, stators, rotor spiders, butterfly valves, Howell Bunger valves, spiral cases, draft tubes, and penstock pipes. Targeted at HES operators, energy companies, and EPC contractors developing hydroelectric projects.
• Electromechanical Equipment for Hydroelectric Power Plants Manufacturing of electromechanical components for hydroelectric power plants, including draft tubes, spiral cases, speed rings, inlet pipes, and turbine wheel fabrication. Used by HES operators and EPC contractors for hydro turbine assembly.
• Wind Power Turbine Generators, Tower Fabrications & Installations Steel wind tower fabrication with capacity of 80 towers per year (up to 105 tons per piece), including rotor housings, stator structures, generator brake discs, turbine transportation frames, anchor cages, turbine blade hubs, and on-site mechanical/electrical installation. Targeted at wind farm developers and turbine OEMs (e.g., Nordex).
• Pressurized Vessels & Tanks Design and manufacturing of ASME quality-assured pressure vessels for petroleum and chemical industries, including crude oil storage tanks, water tanks, LPG tanks, pressurized cement silos, horizontal separation tanks, and cryogenic vessels. Serves national oil companies, petroleum ministries, and industrial clients.
• Maintenance and Repair Services for HES and Wind Energy Equipment Comprehensive maintenance, repair, and support services for hydroelectric and wind energy equipment, including plant condition assessment, consulting, training, renovation, spare parts supply, and 7-day/24-hour on-site availability. Targets HES and RES operators seeking lifetime support for installed assets.
• Turnkey Civil & Contracting Works for Hydroelectric Power Plants Turnkey civil construction and contracting services for hydroelectric power plants, including regulator structures, transmission channels, tunnels, powerhouse buildings, and transmission lines, together with mechanical and electrical equipment manufacturing and installation. Delivered to HES developers, IPPs, and state utilities as an end-to-end project package.

Quantifiable outcome

• 50+ years of continuous operation in heavy steel fabrication industry
• +3 more outcomes

Named customers9 records

Segments4 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

Two partnerships are on record, tiered core.

• SAHA İstanbul (Savunma, Havacılık ve Uzay Kümelenmesi Derneği)coreStrategic or Co-development Partner · 9 July 2020Çiltuğ became a member of SAHA Istanbul (Defense, Aviation and Space Clustering Association) following protocols signed by GSO and SAHA Istanbul Team on 09.07.2020 for establishing a Model Factory in Gaziantep. The partnership enables Çiltuğ to participate in defense, aviation, and naval sector projects, with active collaboration on high-tech manufacturing opportunities.
• Gaziantep Sanayi Odası (GSO) - Gaziantep Chamber of IndustrycoreStrategic or Co-development Partner · 9 July 2020Partnership for establishing a Model Factory in Gaziantep. GSO Kobi Geliştirme Müdürü and SAHA Istanbul Secretary General visited Çiltuğ facilities to explore collaboration opportunities in defense and high-tech manufacturing sectors.

Scale indicators7 records

Broad incumbents

• Siemens Energy: Global turbine and grid technology OEM with significant hydro and wind portfolios. Comparable as a broad incumbent in the same energy infrastructure space, though Siemens operates at a different scale and vertical scope.
• GE Vernova: Major hydro and wind turbine OEM with a global installed base. Already a Çiltuğ customer (Nam Theun 2, Soenna Hoy projects). Competes as a broad incumbent with complete turbine systems rather than as a steel fabrication specialist.

Direct peers

• Voith Hydro: German-headquartered hydro turbine and hydromechanical equipment manufacturer. Directly competes with Çiltuğ in spiral cases, draft tubes, and penstock fabrication for large hydro projects globally.
• CS Wind: Korean wind tower manufacturer serving global wind OEMs. Direct competitor in wind tower fabrication, with the same type of heavy steel welding/coating capability and customer base (Nordex, Vestas, Siemens Gamesa).
• Borusan Mannesmann: Turkish steel pipe and tube manufacturer serving energy, construction, and industrial markets. Comparable as a domestic Turkish peer in steel pipe fabrication with international export capability, overlapping with Çiltuğ's penstock and pipe-based products.
• Andritz AG: Austrian global supplier of hydro-turbine, penstock, and hydromechanical equipment for HES projects. Directly comparable to Çiltuğ's hydromechanical equipment and penstock offerings, with overlapping end customers (utilities, EPCs) and similar turbine component scope.
• GRI Renewable Industries: Spanish-Turkish wind tower manufacturer with Turkish production footprint. Among the most direct competitors in regional wind tower fabrication, with comparable capacity and OEM customer base.
• Doğuş İnşaat: Turkish construction and EPC group active in dam and HES projects (e.g., Boyabat Dam as a customer of Çiltuğ). Direct peer in Turkish HES infrastructure delivery, with overlapping project portfolio and customer relationships.
• Trinity Structural Towers: US-based wind tower manufacturer supplying North American wind OEMs. Direct peer in wind tower scale fabrication, comparable in process (heavy rolling, welding, coating) and customer type.

Regional players

• ENKA İnşaat: Turkish EPC contractor with extensive experience in power plant construction. Comparable as a regional Turkish operator in energy infrastructure delivery, with some overlap in HES and turnkey project execution.

Market position

Strengths5 records

Weaknesses5 records

Key risks6 records

Key highlights6 records

Customer concentration

Compliance9 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Çiltuğ