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OUR SERVICES

At OSS, we provide a full range of industrial services, from prefabrication to installation, maintenance and shutdown support.

Our core competencies include:

Technological pipelines

Pressure vessels and skids

Metal structures and welding works

Storage tanks and reservoirs

Industrial equipment

and more…

We deliver both standalone services and fully integrated solutions, depending on project scope and client needs.
Our experience spans virtually all industrial sectors. We are used to working in diverse environments and can quickly adapt to different standards, specifications and project conditions worldwide.
Whether it is a small-scale assignment or a large and complex project, we assemble tailored teams that can operate independently and efficiently anywhere in the world.
Our teams include:
welders, pipefitters, supervisors, project managers, welding engineers, safety specialists, mechanical technicians, fire watch personnel and other skilled professionals – all committed to delivering high-quality results.

SAFETY FIRST

Safety is an integral part of everything we do.
All OSS personnel working in high-standard environments, including Scandinavia, are fully trained and certified. Our teams hold HOT WORK certifications and have completed occupational safety training in accordance with local requirements.
Many of our specialists are additionally certified for high-risk activities, such as working at heights and handling suspended loads.
We ensure that every project is carried out safely, responsibly and in full compliance with applicable regulations.

Technological pipelines

We fabricate and install technological piping systems across various industries and operational environments. Wherever piping systems are required, our teams deliver precise fabrication and high-quality welding solutions. We work with carbon steel, stainless steel and specialized alloys, ensuring system integrity, leak-proof performance and reliable long-term operation.

Technological pipelines

Prefabrication

We provide prefabrication of piping systems, steel structures and mechanical components in controlled workshop environments. All elements are produced according to project requirements and quality standards. Prefabrication improves consistency, reduces on-site installation time and increases overall project efficiency.

Prefabrication

Welding Works

We provide certified welding services across various industries and working environments — from workshops to refineries, shipyards and construction sites. Wherever welding is required, our qualified specialists deliver reliable results. We work with different materials and welding methods, ensuring structural integrity, durability and compliance with international standards.

Welding Works

Repair & Maintenance

We execute complex repair and maintenance works during industrial shutdowns in refineries and other production facilities. Our teams perform critical mechanical activities within strictly defined timeframes. Understanding that downtime directly impacts profitability, we focus on detailed planning, workforce coordination and safe, efficient execution under high-pressure conditions.

Repair & Maintenance

Boilers & Heat Exchangers

We prefabricate and install boilers and heat exchangers for industrial applications. All components are prepared with precision to ensure smooth integration during on-site installation. Our focus is on safe installation, reliable thermal performance and long-term operational stability.

Boilers & Heat Exchangers

Installation Works

OSS performs mechanical, structural and piping installation works across various industries. We handle equipment assembly, piping systems and steel structure installation according to technical documentation and safety standards. Our structured approach ensures accurate alignment, smooth commissioning and minimized operational disruption.

Installation Works

Skids, Tanks, Vessels and Steel Structures

We manufacture and assemble industrial skids, tanks, pressure vessels and custom steel structures. Fabrication is carried out in controlled environments with strict quality supervision. Our solutions are built for durability, structural stability and full compliance with project specifications.

Skids, Tanks, Vessels and Steel Structures

Shipbuilding

OSS delivers structural and mechanical solutions for shipbuilding projects. We support new-build construction with steel structures, piping systems, equipment installation and welding works in compliance with marine industry standards. Our teams integrate efficiently into shipyard operations, ensuring precision, quality control and reliable execution within agreed timelines.