Services
Mechanical strength calculations, pressure equipment design, technical consulting, and 7-step delivery workflow.
Explore AllMechanical, strength, and FEA simulations
ASME VIII Div.1, EN 13445, and TEMA compliance
Standards evaluation and technical reporting
End-to-end flow from inquiry to technical support
Pressure vessels, reactors, tanks, piping, and columns
ASME & EN compliant vessel and nozzle calculations
Thermal and mechanical optimized exchanger designs
Advanced structural, stress, and thermal simulations
Pressure, temperature, and corrosion allowance
Industries
Cross-disciplinary engineering solutions tailored to the dynamics and process conditions of diverse sectors.
Explore AllCustom machine design and structural stress verification
Process tanks, dye kettles, and heat recovery exchangers
Thermal, biomass, geothermal, and cogeneration plants
API 650 / API 620 storage tanks and refinery systems
Heavy industrial furnaces, cooling towers, and steel structures
Waste heat recovery and green energy integration
3D CAD modeling and innovative prototype development
End-to-end plant layout, piping flexibility, and layout design
Standards
Engineering standards guide fully compliant with ASME, EN, API, and TEMA international codes.
Explore AllPressure vessel mechanical sizing and FEA criteria
CE & PED 2014/68/EU compliant calculations
Welded storage tanks for petroleum and chemicals
Shell & tube heat exchanger thermal & mechanical sizing
About Us
10+ years of engineering experience, 3P philosophy, vision, mission, corporate values, and commitments.
Explore AllExpert engineering team founded on shared excellence
Heat-Ex, Dağgaz, Ogeas, and strategic engineering projects
Precision, Performance, Professionalism + EN
Engineering beyond standards mindset
Reliability, technical excellence, and continuous growth
Our differentiators and engineering commitments
POLIEN Engineering & Consulting / 01
Clarity in engineering. Confidence for the future.
End-to-end engineering solutions for energy, process and industrial facilities.
INDUSTRIES WE SERVE
Our Industry Sectors
Click on any sector to explore our dedicated engineering scope and deliverables.
Custom machine design, 3D CAD modeling, structural strength & FEA stress analysis.
Textile dye kettles, chemical process tanks and waste heat recovery exchanger systems.
Steam boilers, cogeneration, thermal, biomass & geothermal power plant piping.
API 650 / 620 welded storage tanks, distillation columns & refinery vessels.
Heavy smelting furnaces, cooling towers, structural steelworks & blast furnace lines.
Industrial waste heat recovery exchangers, carbon reduction & green energy integration.
Mechanical design optimization, CFD flow, weight reduction & functional prototyping.
Integrated piping flexibility analysis, 3D plant layout & turnkey engineering design.
Polien / Capabilities
Engineering & equipment capabilities
Pressure Equipment Design
Standard-compliant, safe, and efficient designs. Shell, head, and nozzle sizing aligned with ASME VIII and EN 13445.
Heat Exchanger Design
Optimum solutions for efficient heat transfer. TEMA and ASME compliant shell & tube thermal and mechanical sizing.
Mechanical Design & Projecting
Functional, durable, and feasible industrial projects. 3D CAD modeling, piping flexibility, and structural steel.
Pressure Vessel Calculations
Verified results with advanced calculations. Finite Element Analysis (FEA), local stress evaluation, and design verification.
Design Optimization
Solutions that increase performance while reducing cost. Material weight optimization and minimal pressure drop.
Shop Drawings & Documentation
Comprehensive technical documents guiding fabrication. 2D shop drawings, flat patterns, weld maps, and detailed BOM.
PRESSURE EQUIPMENT DESIGN
Standard-compliant, safe, and efficient designs.
HEAT EXCHANGER DESIGN
Optimum solutions for efficient heat transfer.
MECHANICAL DESIGN & PROJECTING
Functional, durable, and feasible projects.
PRESSURE VESSEL CALCULATIONS
Reliable results with advanced calculations.
DESIGN OPTIMIZATION
Solutions that increase performance while reducing cost.
SHOP DRAWINGS & TECHNICAL DOCUMENTATION
Comprehensive technical documents guiding fabrication.
Polien / Who We Are
10+ YEARS EXPERIENCEWho We Are
POLIEN was established by senior engineers with over a decade of specialized industry experience, united by the ambition to deliver rigorous engineering calculations, structural simulations, pressure equipment sizing, and mechanical engineering consulting.
POLIEN delivers dependable and sustainable engineering grounded in precision, performance, and professionalism. We believe engineering transcends raw mathematical data—it is a responsibility requiring unwavering trust, accountability, and continuous evolution. These principles form the bedrock of every client partnership.
Polien / References
Our References
From TEMA thermal exchanger optimization to API storage tanks and advanced FEA simulations, our engineering design projects with industry leaders.
HEAT-EX
Heat Transfer & Exchanger Systems
Shell and tube heat exchanger thermal modeling, flow-induced tube vibration analysis, and tubesheet structural verification strictly compliant with TEMA standards.
DAĞGAZ
Gas & Pressure Storage Systems
Industrial gas storage vessels, shell and dished head thickness calculations, nozzle external loading, and audit-ready verification dossiers for European and global compliance.
OGEAS
Industrial Plants & Heavy Machinery
Design-by-Analysis (DBA) Finite Element Analysis, thermal-mechanical stress evaluation, and fatigue lifecycle simulation for heavy industrial and process plant equipment.
Polien / Equipment
Equipment Portfolio
Pressure Equipment
Vertical & horizontal process vessels, reactors, and high-pressure shells
Storage Tanks
API 650/620 compliant petroleum, chemical, and fuel storage tanks
Air Coolers
Fin-fan air-cooled heat exchangers for process plants and power stations
Heat Exchangers
TEMA standard shell-and-tube thermal & mechanical optimized exchangers
Piping Systems
ASME B31.3 process piping networks, manifolds, and high-pressure spools
Steel Construction
Heavy industrial pipe racks, equipment skids, and structural steel frames
Process Equipment
Distillation columns, stripping towers, and custom reaction equipment
Filters & Separators
High-pressure 2/3-phase separators, cyclones, and cartridge filter housings
Valves & Accessories
Industrial valve manifolds, safety relief stations, and instrumentation
Tube Bundles
U-tube & straight-tube heat exchanger bundles, tubesheets, and baffles
Silos & Hoppers
Bulk solids, granular and powder storage silos with conical hoppers
Expansion Joints
Axial, lateral, and angular metallic expansion bellows and compensators
ENGINEERING PIPELINE
Our Workflow Process
A rigorous 7-stage pipeline from initial scoping to certified calculation packages and on-site support.
Requirements Definition
Clarifying operational requirements, fluid specifications, and technical limits.
Clarification of process parameters, design pressure (Pn), temperature (Tn), and corrosion allowance.
PHASE OUTPUTS & QA
EXPLORE POLIEN
Explore POLIEN
Take a closer look at our work and why we do it.
Combining Precision, Performance, and Professionalism with international engineering standards to build lasting trust across every industrial project.
Pressure vessel design, thermal sizing, and advanced Finite Element Analysis (FEA) compliant with ASME Section VIII, EN 13445, API 650/620, and TEMA codes.
Engineering solutions driving process efficiency and waste heat recovery across 8 core industries, from energy and petrochemical to textile and heavy industry.
Polien / Standards
Our Engineering Standards
ASME Section VIII
Division 1 & Division 2
Pressure vessel design rules, mechanical sizing, and Design-by-Analysis FEA stress criteria.
EN 13445
European Unfired Pressure Vessels Standard
Harmonized European standard supporting the Pressure Equipment Directive (PED 2014/68/EU).
API 650 / API 620
Welded Storage Tanks Standards
Seismic, wind, and hydrostatic design criteria for petroleum and chemical storage tanks.
TEMA Standards
Class R, Class C, Class B
Mechanical sizing for tubesheets, tube bundles, baffles, and acoustic vibration prevention.
Polien / Why Us
Why POLIEN?
Because we are guided by our three founding principles;
Precision (Hassasiyet)
Accuracy, rigor, and engineering discipline in every calculation.
Performance (Performans)
Efficient, reliable, and optimized engineering solutions.
Professionalism (Profesyonellik)
Ethical, transparent service aligned with the highest quality standards.
Other Reasons to Choose Us;
Polien / FAQ
Frequently Asked Questions
With our core principles of Precision, Performance, and Professionalism, we push engineering beyond conventional standards.
We perform shell, tube bundle, tubesheet, and nozzle sizing strictly aligned with ASME Section VIII, EN 13445, and TEMA codes.
We verify structural safety margins and dynamic performance through advanced mechanical, thermal, and stress simulations.
Delivering calculation packages and fabrication drawings fully compliant with ASME, EN, API, and TEMA for third-party approval.