Pn
Pn
Design Pressure
Maximum allowable working pressure boundary
Services
Mechanical strength calculations, pressure equipment design, technical consulting, and 7-step delivery workflow.
Explore AllEngineering Calculations & Analysis
Mechanical, strength, and FEA simulations
Pressure Equipment Design & Sizing
ASME VIII Div.1, EN 13445, and TEMA compliance
Technical Consulting & Code Review
Standards evaluation and technical reporting
Our Working Process (7 Steps)
End-to-end flow from inquiry to technical support
Equipment Portfolio
Pressure vessels, reactors, tanks, piping, and columns
Pressure Equipment Design & Analysis
ASME & EN compliant vessel and nozzle calculations
Shell & Tube Heat Exchangers (TEMA)
Thermal and mechanical optimized exchanger designs
Finite Element Analysis (FEA)
Advanced structural, stress, and thermal simulations
Design Criteria (Pn, Tn, C.A.)
Pressure, temperature, and corrosion allowance
Industries
Cross-disciplinary engineering solutions tailored to the dynamics and process conditions of diverse sectors.
Explore AllMachinery & Manufacturing
Custom machine design and structural stress verification
Textile Industry (Dye Tanks)
Process tanks, dye kettles, and heat recovery exchangers
Energy & Power Generation
Thermal, biomass, geothermal, and cogeneration plants
Petrochemical, Oil & Gas
API 650 / API 620 storage tanks and refinery systems
Iron-Steel & Metal Industry
Heavy industrial furnaces, cooling towers, and steel structures
Environment & Sustainability
Waste heat recovery and green energy integration
R&D & Product Development
3D CAD modeling and innovative prototype development
Industrial Plants & Facilities
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 AllASME Section VIII (Div.1 & Div.2)
Pressure vessel mechanical sizing and FEA criteria
EN 13445 (European Standard)
CE & PED 2014/68/EU compliant calculations
API 650 / API 620 (Storage Tanks)
Welded storage tanks for petroleum and chemicals
TEMA Standartları (Class R, C, B)
Shell & tube heat exchanger thermal & mechanical sizing
About Us
10+ years of engineering experience, 3P philosophy, vision, mission, corporate values, and commitments.
Explore AllWho We Are
Expert engineering team founded on shared excellence
The POLIEN Name & 3P Rule
Precision, Performance, Professionalism + EN
Vision & Mission
Engineering beyond standards mindset
Corporate Values
Reliability, technical excellence, and continuous growth
Why POLIEN?
Our differentiators and engineering commitments
POLIEN / SOLUTIONS
Pressure Vessels, Heat Exchangers & Advanced FEA Solutions
Mechanical design, sizing, and simulations compliant with ASME VIII, EN 13445, API 650/620, and TEMA.
Polien / Core Solutions
Our 3 Core Engineering Solutions
ASME VIII / EN 13445
01POLIEN PILLAR
Engineering Calculations & Analysis
- Mechanical Strength Sizing
- Finite Element Analysis (FEA)
- Thermal & Fluid Simulations
- Code Compliance Verification
TEMA CLASS R, C, B
02POLIEN PILLAR
Pressure Equipment Design & Analysis
- Vessel & Shell-Tube Heat Exchanger Sizing
- Mechanical 3D CAD Projecting
- Nozzle Orientation & Loads (WRC)
- Workshop Fabrication Drawings
FEA & STRESS SIMULATION
03POLIEN PILLAR
Technical Consulting & Code Reviews
- Independent Engineering Consulting
- Third-Party Design Verification
- Certified Calculation Reports
- R&D and Process Engineering
Polien / Equipment
Equipment Portfolio
01ASME / EN
Pressure Equipment
Vertical & horizontal process vessels, reactors, and high-pressure shells
02ASME / EN
Storage Tanks
API 650/620 compliant petroleum, chemical, and fuel storage tanks
03ASME / EN
Air Coolers
Fin-fan air-cooled heat exchangers for process plants and power stations
04ASME / EN
Heat Exchangers
TEMA standard shell-and-tube thermal & mechanical optimized exchangers
05API / TEMA
Piping Systems
ASME B31.3 process piping networks, manifolds, and high-pressure spools
06API / TEMA
Steel Construction
Heavy industrial pipe racks, equipment skids, and structural steel frames
07API / TEMA
Process Equipment
Distillation columns, stripping towers, and custom reaction equipment
08API / TEMA
Filters & Separators
High-pressure 2/3-phase separators, cyclones, and cartridge filter housings
09ISO / DIN
Valves & Accessories
Industrial valve manifolds, safety relief stations, and instrumentation
10ISO / DIN
Tube Bundles
U-tube & straight-tube heat exchanger bundles, tubesheets, and baffles
11ISO / DIN
Silos & Hoppers
Bulk solids, granular and powder storage silos with conical hoppers
12ISO / DIN
Expansion Joints
Axial, lateral, and angular metallic expansion bellows and compensators
Polien / Criteria
Design Criteria & Parameters
Tn
Tn
Design Temperature
Maximum and minimum design temperature envelope
C.A.
C.A.
Corrosion Allowance
Sacrificial wall thickness allowance for fluid corrosion