304 Stainless Steel Coil Tube for Beer Fermentation Tank Cooling Jacket
Manufacturer: Wenzhou Jixing Metal Materials Co., Ltd
Product Overview
This precision-engineered 304 stainless steel coil tube is specifically designed for use as a cooling jacket in beer fermentation tanks. It facilitates efficient heat exchange between the fermentation medium and the circulating cooling fluid, enabling precise temperature control critical to the brewing process. The coil tube is engineered to operate reliably under conditions where ethylene glycol coolant at temperatures ranging from 5°C to 10°C circulates within the tube, while the exterior is exposed to condensate water in a high-humidity brewery environment. This product represents an optimal balance of corrosion resistance, thermal performance, and cost-effectiveness for beer brewing applications.
Material & Properties
The coil tube is manufactured from AISI 304 (1.4301) austenitic stainless steel welded pipe, which provides excellent resistance to both the internal ethylene glycol coolant and the external condensate water environment. Key material properties include:
- Corrosion Resistance: Superior resistance to condensation, mild acids, and glycol-based fluids, ensuring long service life in brewery conditions.
- Hygienic Compliance: Fully compatible with food-grade and beverage industry requirements; surface finish can be specified to meet sanitary standards.
- Thermal Conductivity: Adequate heat transfer characteristics to support efficient cooling of fermentation tanks.
- Mechanical Strength: Maintains structural integrity under internal pressure differentials and thermal cycling.
- Weldability: Excellent welding performance enabling reliable fabrication of coil assemblies and connections.
Specifications
| Parameter | Specification |
|---|---|
| Material Grade | AISI 304 (1.4301) Stainless Steel |
| Pipe Type | Welded Stainless Steel Pipe |
| Tube Form | Coil / Helical Coil |
| Primary Application | Beer Fermentation Tank Cooling Jacket |
| Coolant Medium | Ethylene Glycol Solution |
| Coolant Operating Temperature | 5°C to 10°C |
| External Environment | Condensate Water / High Humidity |
| Corrosion Protection | Inherent 304 SS corrosion resistance |
| Insulation Requirement | Moisture-proof insulation layer; CUI-resistant |
| Compliance | Food-grade / Beverage industry standards |
Manufacturing Process
The coil tube is produced through a controlled manufacturing process that ensures dimensional accuracy and consistent quality:
- Raw Material Selection: Certified 304 stainless steel welded pipe conforming to applicable international standards (ASTM A213, EN 10216, or equivalent).
- Cold Coiling / Forming: The pipe is precision-formed into the required helical coil geometry using computer-controlled coiling equipment, ensuring uniform bend radii and pitch consistency.
- Surface Treatment: Optional pickling and passivation to restore and enhance the passive chromium oxide film, maximizing corrosion resistance.
- Quality Inspection: Dimensional verification, visual inspection of weld seams, and optional pressure testing to confirm integrity.
- Coil Assembly: End connections and supports are fabricated to integrate seamlessly with fermentation tank jacket systems.
Applications
This coil tube is purpose-built for the following applications within the beer brewing industry:
- Fermentation Tank Cooling Jackets: Primary application — controlling fermentation temperature by circulating 5–10°C ethylene glycol through the coil jacket surrounding the fermentation vessel.
- Maturation Tank Temperature Control: Maintaining stable temperatures during beer maturation and conditioning phases.
- Cold Crash Systems: Rapid temperature reduction of beer prior to filtration and packaging.
- General Beverage Cooling: Suitable for analogous applications in wine, cider, and soft drink production facilities.
Quality Certifications
Wenzhou Jixing Metal Materials Co., Ltd maintains rigorous quality management systems to ensure product reliability:
- ISO 9001 Quality Management System Certification
- Material Certifications (Mill Test Reports / EN 10204 3.1)
- Compliance with food-grade material requirements for beverage industry use
- Batch traceability and full documentation for regulatory compliance
Key Selling Points & Technical Advantages
- Optimal Material Selection: 304 welded pipe provides the ideal combination of corrosion resistance and cost-efficiency for this specific application — no need for higher grades when 304 meets all environmental demands.
- CUI Prevention Guidance: Comprehensive recommendations for moisture-proof insulation layers to prevent Corrosion Under Insulation (CUI), a common failure mode in cryogenic and chilled coil systems.
- Precision Coiling: Consistent geometry ensures uniform coolant flow distribution and predictable thermal performance throughout the jacket.
- Food-Safe Construction: Entirely compatible with direct and indirect food-contact applications in the brewing industry.
- Thermal Cycling Durability: Austenitic 304 stainless steel retains mechanical properties across the full operating temperature range, resisting fatigue from repeated thermal cycling.
- Scalable Supply: Custom coil diameters, pitch, and lengths available to match specific tank geometries and cooling capacity requirements.
Important Note: To maximize service life and prevent Corrosion Under Insulation (CUI), the insulation layer surrounding the coil jacket must be designed with appropriate moisture barriers and vapor retarders. Regular inspection of insulation integrity is recommended to ensure continued protection of the stainless steel tube surface in high-humidity brewery environments.