Zero Tolerance for Extreme Temperature & Vibration.
Custom Engineered Composite Solutions for Critical Ducts
Heavy-duty engineered non-metallic expansion joints designed for severe thermal expansion, multi-axial kinematics, and mechanical vibration in industrial ducting up to +1000°C. Engineered with multi-layer fluoropolymer gas barriers and high-purity silica insulation.
Kinematic Stress & Thermal Growth Absorption
Severe thermodynamic cycling and transient operating states in industrial duct systems generate substantial thermal displacement and mechanical stress. Multi-layer fabric expansion joints absorb concurrent axial, lateral, and torsional movements with minimal spring rates, isolating duct anchors and sensitive machinery from excessive structural loads.
Multi-Axis Response
Engineered flexibility designed to absorb concurrent axial compression/extension, lateral shear, and angular rotation within a single compact face-to-face dimension.
Ultra-Low Spring Rate
Reaction forces transferred to duct anchors and equipment flanges are kept to an absolute minimum, isolating critical mechanical systems from thermal reaction loads.
Engineered Gas-Tight Barrier
Multi-layer laminated fluoroplastic (PTFE) membrane design ensures long-term barrier integrity against aggressive acidic vapors and high-temperature flue gases.
30 Years of Engineering Excellence
in Fabric Expansion Joints
Founded in 1996 with the vision of Armin Akbuğa, BundleTec is a family-owned company dedicated to fabric expansion joint engineering for three generations. With a philosophy of engineering in every stitch and science in every layer, we provide solutions for the industry's most challenging conditions.
Vision
To be the reference point for fabric expansion joint technology in Turkey. To leave an engineering legacy that is carried further with every generation.
Mission
Providing custom engineering solutions to our customers, viewing every project as a long-term partnership, and extending the lifespan of industrial infrastructures.
Values
Quality, integrity, innovation, and environmental compliance — the four core values that have guided every decision we make for 30 years.
Multi-Layer Fabric Expansion Joint Anatomy
Cross-Laminated PTFE Gas Barrier
LAYER 1Cross-laminated multi-layer PTFE barrier engineered for helium-tight sealing (Q ≤ 1×10⁻³ mbar·l/(s·m)). Provides chemical resistance against aggressive flue gases and condensates across pH 0–14 while accommodating continuous flexing.
Fabric Expansion Joint Series
FanTec Fabric Expansion Joint
A high-flexibility elastomeric composite series engineered for fan and blower connections, effectively isolating mechanical vibrations and low-pressure acoustic pulses.
ChemTec Fabric Expansion Joint
Engineered with a multi-layer laminated PTFE membrane, delivering chemical resistance against acid dew point condensation, wet scrubbers, and flue gas desulfurization (FGD) media.
FlueTec Fabric Expansion Joint
Designed for flue gas ducts, cement kilns, and thermal power plants. Integrated thermal bolsters and particulate barriers protect against fly ash abrasion and sustained temperatures up to +750°C.
ArminTec Fabric Expansion Joint
Heavy-duty multi-layer composite construction engineered for demanding industrial ducts where large axial expansion, lateral shear, and structural settling occur simultaneously.
GtTec Fabric Expansion Joint
High-temperature engineered composite solution built for gas turbine exhaust transitions and HRSG inlets, engineered to withstand thermal shock and continuous service up to +1000°C.
Expansion Joint Components
Particle Deflector (PD)
L-profile internal deflector preventing gravity-induced particle accumulation and carcass compaction in vertical gas ducting.
Condensate Drain Pipe & Barrier (DP & DB)
Acid dew point drainage system and barrier profile safely routing corrosive condensates away from composite fabric membranes.
Single-Axis Particle Barrier (SAPB)
Flexible wire-mesh sealed barrier preventing fine particulate ingress during axial movements in heavy-duty ducting.
Double-Axis Particle Barrier (DAPB)
Multi-stage labyrinth barrier accommodating simultaneous axial and lateral offsets while isolating abrasive dust.
Particle Discharge Pipe (PEB)
Dedicated drain and discharge pipe evacuating settled solids from the lower cavity during continuous operation.
Flange Heat Dissipation Fins (FK)
High-efficiency thermal cooling fins and insulating barriers mitigating conductive heat transfer to clamping flanges.
Tadpole Flange Gasket (TG)
Bulb-and-tail tadpole perimeter gasket eliminating edge pinching and fabric damage under clamping bars.
Expansion Joint Components Comprehensive Engineering Guide
In-depth thermodynamic, kinematic, and aerodynamic calculations for particle deflectors, acid drainage systems, dual-acting baffles, and flange cooling shields under FSA-DSJ and RAL-GZ 719 standards.
Sectoral Application Areas
Engineered fabric expansion joint systems custom-optimized for extreme thermodynamic cycles, abrasive particulates, and chemical aggressiveness across heavy industries.
Power Generation & Plants
Coal, Gas Turbine, Biomass & HRSG
Multi-layer composite expansion joints engineered to handle large axial/lateral expansions and thermal shocks in turbine exhaust and boiler ducts.
Cement, Lime & Minerals
Rotary Kilns, Clinker Coolers, ESP & Mills
Heavy-duty fabric compensators with integrated steel flow liners and ceramic rope seals to prevent severe particulate abrasion in clinker ducting.
Chemical, Petrochem & FGD
Flue Gas Desulfurization (FGD), Acid Ducts
Zero-porosity laminated fluoropolymer gas barriers impervious to sulfuric acid condensate below flue gas acid dew points.
Steel & Heavy Metallurgy
Blast Furnaces, Sinter Plants, Reheat Ducts
High-strength structural expansion joints designed to withstand high mechanical movements and intense radiant heat in metallurgical ducting.
Industrial Fans & Blowers
Centrifugal Fans, Baghouses, Ventilation
Highly flexible elastomeric silicone and E-Glass composite joints isolating severe fan vibration from duct runs and structural anchors.
Waste-to-Energy & Biomass
Municipal/Hazardous Waste, Syngas, WHRB
Dual-protection expansion joints combining heavy particulate insulation blankets with chemically inert PTFE acid barriers.
Project Gallery & Case Studies
HRSG Inlet Sealing Solutions – High Movement and Reliable Performance
Multi-Layer Expansion Joint Fabric for Thermal Power Plant Boiler Zone
Cold-to-Cold Gas Turbine Expansion Joint – Insulated and Safe Solution
Custom Designed Fabric Expansion Joint for Biomass Power Plant
Engineering Blog
Quick Solution and Specifications
Get our documents now to submit your expansion joint sizing requests or to review our production standards.
FlueTec 3D CAD & 3D Print Model
Full-scale STEP solid model and 3D print-ready STL files featuring duct flanges, clamping flat bars, bolster, and fabric sealing layers.
Frequently Asked Questions
Your Industrial Solution Partner
Production Centers
Fabric Expansion Joint Production & Headquarter
Bayrak Cd. No:134D & 132C Karlıbayır Mh. Arnavutköy / Istanbul
Metal Expansion Joint Production
Yarış Çıkmazı Sokak, İstim Sanayi Sitesi No:174 İstasyon Mah. Tuzla / Istanbul