EN 10296-2 Stainless Steel Coiled Heat Exchanger Tube
Product Overview
The EN 10296-2 Stainless Steel Coiled Heat Exchanger Tube is a precision-engineered welded coil tube manufactured to the European standard EN 10296-2, which governs welded steel tubes for mechanical and engineering purposes. Designed specifically for non-pressure heat exchanger applications, this product combines the flexibility of coil form with the corrosion resistance and thermal performance of stainless steel, making it an ideal solution for heat transfer systems across a wide range of industrial environments.
Supplied by Wenzhou Jixing Metal Materials Co., Ltd., this coiled tube is engineered to deliver consistent dimensional accuracy, superior weld integrity, and reliable long-term service life in demanding thermal exchange operations. The coil configuration offers significant advantages in downstream processing, including reduced cutting waste, streamlined forming operations, and efficient storage and handling.
Material & Properties
This coiled heat exchanger tube is available in a range of austenitic and duplex stainless steel grades, each selected to meet the specific thermal, chemical, and mechanical demands of heat exchanger service. The following grades are commonly offered:
- 1.4301 (304) — Excellent general corrosion resistance, good formability, and proven performance in food-grade and chemical processing heat exchangers.
- 1.4401 (316L) — Enhanced pitting and crevice corrosion resistance due to molybdenum addition, ideal for marine, chemical, and pharmaceutical applications.
- 1.4571 (321) — Titanium-stabilized grade offering superior resistance to intergranular corrosion at elevated temperatures.
- 1.4539 (310S) — High-temperature grade suitable for extreme thermal cycling conditions with excellent oxidation resistance.
- 1.4462 (Duplex 2205) — Combined strength and corrosion resistance for aggressive chloride environments.
Key material properties include high thermal conductivity for efficient heat transfer, low thermal expansion for dimensional stability during operation, and excellent resistance to scaling and fouling, which extends maintenance intervals and reduces operational downtime.
Specifications
| Parameter | Specification |
|---|---|
| Governing Standard | EN 10296-2 (Welded Steel Tubes for Mechanical and Engineering Purposes) |
| Product Form | Coiled Tube (Continuous Coil) |
| Tube Type | Non-Pressure Heat Exchanger Tube |
| Outer Diameter Range | Ø6.0 mm – Ø50.8 mm |
| Wall Thickness Range | 0.4 mm – 3.0 mm |
| Coil Inner Diameter | Ø200 mm – Ø600 mm (customizable) |
| Coil Length | Continuous coil, typically 500 m – 5,000 m per coil |
| Manufacturing Process | Welded (ERW / TIG welded per EN 10296-2) |
| Surface Finish | Mill finish, pickled & passivated, or polished (2B / No.4 / Mirror) |
| Tolerance Class | EN 10296-2 Table 7 (Dimensional tolerances) |
| Available Grades | 1.4301, 1.4401, 1.4571, 1.4539, 1.4462, and others on request |
| End Form | Plain cut ends (standard); beveled or formed ends available on request |
| Maximum Operating Temperature | Up to 870°C (grade dependent) |
Manufacturing Process
The production of EN 10296-2 stainless steel coiled heat exchanger tubes follows a rigorous, multi-stage manufacturing sequence designed to ensure consistent quality and dimensional precision throughout the entire coil length:
- Strip Preparation: Cold-rolled stainless steel strip is supplied by certified mill partners, subjected to incoming inspection for chemical composition, mechanical properties, and surface quality.
- Coiling & Forming: The strip is precisely formed into a circular or rectangular cross-section using high-precision roll-forming equipment with synchronized feed mechanisms to maintain uniform wall thickness.
- Welding: The tube is welded along the longitudinal seam using either Electric Resistance Welding (ERW) or Tungsten Inert Gas (TIG) welding, depending on grade and wall thickness requirements. Weld parameters are continuously monitored and recorded for full traceability.
- Weld Heat-Affected Zone (HAZ) Treatment: The weld HAZ is subjected to acid pickling and passivation to restore full corrosion resistance and achieve a uniform surface finish consistent with the parent metal.
- Dimensional Inspection: In-line laser or ultrasonic measurement systems continuously monitor outer diameter, wall thickness, and roundness throughout the production run, ensuring compliance with EN 10296-2 tolerances.
- Coiling & Packaging: Finished tube is wound onto precision coils, protected with moisture-barrier packaging, and secured for safe transport and storage.
Applications
EN 10296-2 stainless steel coiled heat exchanger tubes are widely deployed across multiple industries where reliable, non-pressure heat transfer is essential:
- Food & Beverage Processing: Pasteurizers, condensers, and evaporators in dairy, brewing, and beverage production lines.
- Pharmaceutical Manufacturing: Sterilization systems, CIP (Clean-In-Place) loops, and process heat exchangers requiring hygienic-grade surfaces.
- Chemical Processing: Heat exchangers for solvent recovery, distillation columns, and chemical reaction temperature control systems.
- Marine & Offshore: Cooling systems, condensers, and evaporators in marine propulsion and offshore platform utilities.
- HVAC & Refrigeration: Condenser and evaporator coils for commercial and industrial air conditioning systems.
- Power Generation: Feedwater heaters, condensers, and auxiliary heat exchangers in thermal and nuclear power plants.
- Automotive & Aerospace: Heat exchangers for engine cooling, oil cooling, and thermal management systems.
The coiled configuration is particularly advantageous in applications requiring on-site fabrication, where the tube can be drawn directly from the coil for forming, bending, and assembly, eliminating the need for butt-welding individual tube lengths and reducing labor costs significantly.
Quality Certifications
Every coil of EN 10296-2 stainless steel coiled heat exchanger tube produced by Wenzhou Jixing Metal Materials Co., Ltd. is backed by comprehensive quality assurance and independent certification:
- EN 10204 3.1 Inspection Certificate: Third-party verified material certificates confirming chemical composition, mechanical properties, and dimensional compliance per EN 10296-2.
- ISO 9001:2015 Quality Management System: Full-process quality management covering design, procurement, manufacturing, inspection, and delivery.
- ISO 3834 Welding Quality: Certified welding procedures and welder qualifications ensuring consistent seam integrity.
- CE Marking: Products conforming to applicable European directives for use in machinery and pressure equipment-related systems.
- Material Traceability: Full heat-lot traceability from raw steel mill to finished coil, enabling complete supply chain accountability.
- Non-Destructive Testing (NDT): Electromagnetic (Eddy Current) and hydrostatic pressure testing performed per EN 10296-2 requirements to verify weld soundness and dimensional conformity.
Unique Selling Points
- Full EN 10296-2 Compliance: Rigorous adherence to the European standard for welded mechanical tubes, ensuring acceptance in regulated European and international markets.
- Coil Form Advantage: Continuous coil supply eliminates joint-related failure points, reduces fabrication waste, and streamlines downstream processing.
- Multi-Grade Availability: Broad selection of stainless steel grades to match specific corrosion, thermal, and mechanical requirements.
- Customizable Specifications: Flexible sizing, surface finish, and coil configuration options tailored to customer-specific engineering drawings and application requirements.
- End-to-End Quality Control: From incoming strip inspection through final coil certification, every production step is documented and verified to ensure consistent, reliable performance.