Production in our workshop, for efficiency on your construction site
In our production facility, covering more than 4,000 m², we manufacture prefabricated pipe spools, steel structures and process equipment, ready for transport and efficient installation on site. Production under controlled workshop conditions ensures consistent quality, shorter installation times and fewer unforeseen issues on site.
Prefabricated pipe spools
Manufactured from carbon steel, low-alloy steel and stainless steel
Steel structures
Supporting and auxiliary structures, technological platforms, pipe bridges, pipeline supports, frames, stairs and service accesses
Pressure vessels and process equipment
Pressure vessels, storage tanks and filtration units
Modules and skids
Integrated piping, equipment and structural assemblies, ready for connection on site
Controlled production process – from materials to final documentation
Integrated assemblies of pipelines, fittings, equipment, and supporting structures, prepared for transport and connection on-site. Welding is performed according to approved WPS procedures, based on appropriate WPQR qualifications, in compliance with EN ISO 3834-2.
Qualified welding procedures
We apply processes 141 – TIG, 111 – MMA/SMAW, 135 – MAG, and combined processes, depending on the material, wall thickness, and project documentation requirements.
Materials and material grades
Carbon, low-alloy, and stainless steels, including P235GH, P265GH, S235/S355, API 5L Gr. B, X42/X52, 16Mo3, 304/304L, and 316/316L, in accordance with available qualifications and project requirements.
You make the decisions.We implement them.
We are aware that large projects cannot tolerate delays. That's why we manage the complete cycle under one roof, from workshop prefabrication to final on-site assembly. By relying on our own 4,000 m² facility and a team of over 100 qualified experts, we eliminate the need for multiple contractors and ensure rapid mobilization across Europe.

Material traceability and controlled production process
We carry out production using materials defined in the project specification, with identification and traceability maintained from receipt through to final delivery. Material documentation, welding, inspection, and testing are recorded in the Manufacturing Data Record.
Certified management systems and welding quality
Our management system is certified according to ISO 9001, ISO 14001, and ISO 45001, while quality management in welding production is carried out according to EN ISO 3834-2. Products are manufactured according to project documentation and agreed technical requirements, applying relevant EN, ISO, ASME, and API standards when defined by the project. For pressure equipment, the appropriate conformity assessment procedure according to PED requirements is applied.
Budget on track, on-time production, seamless assembly
For investors seeking a reliable solution without the risk of unforeseen costs, construction site delays, or additional complications, we execute workshop prefabrication packages with complete process control under one roof. This includes the following.
Complete cycle under one roof
Fixed deadlines and budget
Minimal operational engagement
Transparency and clear communication

Quality-driven production backed by experience
Completed projects confirm our ability to respond to specific technical challenges, while respecting deadlines, budget, and the highest quality standards. View our selected projects.
Why Energotehna?
By combining our own production capacities and a highly qualified team, we achieve the highest standards of efficiency, reliability, and safety in workshop prefabrication. We have built credibility through cooperation with leading companies in the energy, oil and process industries, such as Naftna Industrija Srbije, Petrohemija, Srbijagas, and others.
20+ years and 300+ completed projects
4,000+ m² own facility and 100+ employees
Complete cycle in one place
Fast mobilization and quality assurance
◆ Certificates
Your reliable partner for prefabrication
We have the appropriate certificates and licenses which guarantee the expertise, quality and safety of each solution.
ISO 9001:2015 ISO 14001:2015 ISO 45001:2018 DIN EN ISO 3834-2
20+
years and 300+ completed industrial and energy projects across Europe.

See our projects in practice
We offer comprehensive "turnkey" solutions, enabling our clients full control over costs, deadlines, and quality.
Relying on 20+ years of experience in the oil and process industry, we manufacture and test complex pipe and steel assemblies ready for quick installation.
Experience in every step
Monitoring every detail from idea to implementation
Efficiency and accuracy
Projects completed within deadlines and budget
Safety and long-term results
Focus on sustainability and safety throughout the entire process
Transparency
Open communication and regular progress reporting
Flexibility
Adaptability to client and market needs




