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At CSTHEATEXCHANGER, we design and manufacture food-grade Sanitary Stainless Steel Cooling Coils and Wort Chilling Heat Exchangers specifically engineered for craft microbreweries, industrial brewing facilities, beer fermentation vessels (FV), bright beer tanks (BBT), and brew kettle rapid wort knockdown loops (thermal cooling ratings scaled from 3 kW to over 350 kW, operating fluid temperatures from −10∘C glycol up to +100∘C boiling wort, certified to 3-A Sanitary Standards and FDA food contact compliance). Fabricated from seamless heavy-wall AISI 304 / 304L or molybdenum-enhanced AISI 316L stainless steel, our brewery coils are available in internal tank immersion helical spirals, double-wall counterflow coils, drop-in immersion wort chillers, and dimple/plate jacket cooling banks. Electropolished to Ra≤0.4 μm (320 Grit) and passivated to eliminate beer stone accumulation and bacterial harborage, CST brewery cooling coils deliver rapid wort cooling (from +98∘C to pitching temperature +18∘C/+10∘C in <30–45 minutes), precise fermentation temperature control (±0.5∘C), zero flavor alteration, and complete CIP washdown compatibility.
In commercial brewing, rapid and precise temperature management across boiling wort knockdown and active fermentation directly determines beer clarity, yeast viability, and ester profile stability:
BREWERY TANK COOLING & WORT CHILLING FLUID DYNAMICS
======================= BREW KETTLE / FERMENTATION VESSEL (FV) =======================
┌──────────────────────────────────────────────────────────────────────────────────┐
│ │
│ ▲ [GENTLE CONVECTIVE CRASH COOLING] ▲ [UNIFORM YEAST SUSPENSION]│
│ │ (Wort sinks along chilled coil perimeter) │ (No thermal stratification│
│ │ │ │
│ ┌──┴────────────────────────────────────────────────┴──┐ │
│ │ [CST SEAMLESS SANITARY SS304/SS316L HELICAL COIL] │ │
│ │ • Internal Chilled Glycol (-4°C) or Cold Water (2°C) │ │
│ │ • Continuous CNC bending eliminates internal joints │ │
│ │ • Electropolished Ra ≤ 0.4 µm mirror inner/outer ID │ │
│ └──┬────────────────────────────────────────────────┬──┘ │
│ │ │ │
│ ▼ [COLD WORT SINKS NATURALLY TO CONICAL BOTTOM] ▼ [RAPID COLD BREAK (TRUB)]│
│ │
└──────────────────────────────────────────────────────────────────────────────────┘================================================================================
CST SANITARY STAINLESS BEER COOLING COIL VS. STANDARD COPPER WORT CHILLERS
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Evaluation Metric CST Sanitary Stainless Steel CoilStandard Copper Wort Chiller
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Hygiene & Food Safety Standards3-A Sanitary, FDA & CE Compliant Uncertified copper (Oxide leaching risk)
Caustic / Acid CIP Cleaning 100% Resistant to Hot NaOH & HNO₃ Rapid corrosion from acidic/caustic CIP
Beer Flavor & Metallic LeachingZero Leaching (Completely inert) Risk of metallic off-flavors & oxidation
Sulfur & Chlorine Sanitation 100% Immune to Peracetic Acid (PAA)Copper tarnishes & pits from sanitizers
Surface Finish / Cleanability Mirror Electropolished (Ra ≤ 0.4 µm)Rough mill finish traps beer stone / trub
Mechanical Crush & Dent RigidityHigh Tensile Structural Strength Soft copper tubes deform under handling
Submerged Weld Seams Inside WortZero Submerged Welds (Continuous) Solder/brazed joints corrode in wort
Service Lifespan in Commercial Use20+ Years Continuous Brewing Life 2 to 4 Years before pitting/replacement
================================================================================Cooling boiling wort (+98∘C) rapidly down to yeast pitching temperatures (+18∘C for Ales, +10∘C for Lagers) within 30 to 45 minutes is critical. Rapid thermal shock precipitates unwanted proteins and tannins (hot and cold break/trub), preventing dimethyl sulfide (DMS) off-flavors and protecting wort from wild bacterial infection.
Unlike copper coils that corrode when exposed to brewery cleaning agents, CST AISI 304/316L stainless coils are completely immune to hot caustic soda (Sodium Hydroxide, NaOHNaOH), nitric/phosphoric acid descalers, and peracetic acid (PAA) sanitizers, ensuring effortless clean-in-place (CIP) cycling.
Craft beer is sensitive to biological contamination and mineral scaling. CSTHEATEXCHANGER enforces strict sanitary fabrication protocols:
CST BREWERY COIL METALLURGY & SURFACE FINISH
┌─────────────────────────────────────────────────────────────────────────┐
│ [1. BASE SANITARY TUBING ALLOY] │
│ • ASTM A270 / DIN 11850 Sanitary Seamless AISI 304 / 316L Stainless. │
│ • Heavy wall thickness (1.2 mm–2.0 mm) withstands thermal shock. │
├─────────────────────────────────────────────────────────────────────────┤
│ [2. HIGH-PURITY SURFACE FINISHING] │
│ • Mechanical Polish + Full Immersion Electropolishing (Ra ≤ 0.4 µm). │
│ • Full chemical passivation in citric/nitric bath (ASTM A967). │
├─────────────────────────────────────────────────────────────────────────┤
│ [3. SANITARY CONNECTIONS & MOUNTING HARDWARE] │
│ • Tri-Clamp (ISO 2852 / DIN 32676) Sanitary Ferrules with silicone seals│
│ • Heavy stainless standoffs position coil safely off vessel wall. │
└─────────────────────────────────────────────────────────────────────────┘ CST SANITARY BREWERY COIL PRODUCTION WORKFLOW
FROM CERTIFIED SEAMLESS ASTM A270 STAINLESS TUBING
┌─────────────────────────────────────────────────────────────────────────┐
│ [ STAGE 1: CNC ROTARY DRAW MANDREL CONTINUOUS BENDING ] │
│ Continuous seamless spiral formation with zero submerged weld joints │
├─────────────────────────────────────────────────────────────────────────┤
│ [ STAGE 2: CLEANROOM ORBITAL TIG WELDING & INERT GAS PURGING ] │
│ Full-penetration Tri-Clamp ferrule welding with argon back-purging │
├─────────────────────────────────────────────────────────────────────────┤
│ [ STAGE 3: FULL CHEMICAL PICKLING & ELECTROPOLISHING ] │
│ Eliminates micro-crevices; creates passive chromium oxide barrier │
├─────────────────────────────────────────────────────────────────────────┤
│ [ STAGE 4: 100% PRESSURE TESTING & BOROSCOPE SANITARY INSPECTION ] │
│ Hydrostatic test at 3.0 MPa (30 bar) with internal tube inspection │
└─────────────────────────────────────────────────────────────────────────┘
GUARANTEES 100% STERILITY & ZERO OFF-FLAVOR IN BEER PRODUCTIONInternal weld seams inside fermentation or wort vessels are the primary source of bacterial contamination (Lactobacillus/Pediococcus). CST bends its helical cooling coils from continuous seamless tubes using automated CNC rotary mandrels, ensuring zero submerged welds inside the liquid volume.
Calcium oxalate (beer stone) and yeast deposits bind tightly to rough metal surfaces. Our coils undergo immersion electropolishing down to mirror-grade Ra≤0.4 μm, providing a glass-smooth surface that prevents organic fouling and washes clean in seconds during CIP cycles.
CSTHEATEXCHANGER BREWERY COIL PORTFOLIO
[1. INTERNAL HELICAL FERMENTATION & BRIGHT TANK COILS]
• Custom-diameter spirals matching cylindrical conical fermentation vessels (1 BBL to 100+ BBL).
• Maintains precise fermentation temperature profiles for Ales, Lagers, Stouts, and IPAs.
─────────────────────────────────────────────────────────────────────────────
[2. DROP-IN IMMERSION WORT CHILLERS]
• Heavy portable or hoist-suspended drop-in coil bundles for direct brew kettle knockdown.
• Features rigid stainless riser pipes and quick-disconnect sanitary Tri-Clamp glycol/water ports.
─────────────────────────────────────────────────────────────────────────────
[3. COUNTERFLOW TUBE-IN-TUBE WORT COOLING BUNDLES]
• Continuous counter-current sanitary wort-to-glycol chillers for in-line transfer cooling.(Note: The following engineering parameters represent standard manufacturing design envelopes. Tank diameter, coil height, tube OD, pitch spacing, and mounting bracket geometry are 100% custom-tailored to specific brewery batch volumes and cellar layouts.)
================================================================================
CST SANITARY STAINLESS BEER COOLING COIL (CST-BREW-SERIES)
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Engineering Parameter Standard Manufacturing & Design Range
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Vessel Volume Sizing Capability 1 BBL (117 L) to 120+ BBL (14,000+ L) Tanks
Nominal Thermal Cooling Duty 3 kW to 350+ kW (10,000 to 1,200,000+ BTU/h)
Process Liquid Contact Medium Boiling Wort, Fermenting Beer, Bright Beer, Yeast Slurry
Internal Cooling Fluid Medium Food-Grade Propylene Glycol Water (-5°C to 0°C), Chilled Water
Operating Temperature Range -10°C to +110°C (14°F to +230°F) Full Brewing Thermal Envelope
Design Operating Pressure Range Up to 2.5 MPa (25 bar / 362 psi) High-Pressure Rating
Hydrostatic Proof Test Pressure 3.8 MPa (38 bar / 551 psi) Leak Integrity Quality Gate
Sanitary Base Tubing Metallurgy Seamless AISI 304, AISI 304L, AISI 316L (ASTM A270 / DIN 11850)
Tube Outside Diameters (OD) Ø 1/2" (12.7 mm), Ø 3/4" (19.05 mm), Ø 1" (25.4 mm), Ø 1-1/2"
Tube Wall Thickness Range 1.2 mm to 2.0 mm Heavy Sanitary Gauge (Resists Denting/Vibration)
Surface Roughness Standard Internal & External Electropolished to Ra ≤ 0.4 µm (320 Grit)
Coil Topologies & Geometries Vertical Helical Spiral, Double-Helix, Multi-Tier Basket, Counterflow
Coil Outer Diameter Limits Custom Coils from Ø 200 mm up to Ø 3,200 mm
Sanitary Inlet / Outlet Ports Sanitary Tri-Clamp (1/2" to 2" Tri-Clover), DIN 11851, SMS Unions
Mounting Brackets & Spacers Integrated Heavy Stainless Stand-Off Legs with Sanitary Welds
Quality Standards & Compliance 3-A Sanitary Standards, FDA 21 CFR Compliant, CE / PED 2014/68/EU
Testing & Quality Assurance 100% Helium Leak Testing + Endoscopic Surface Weld Inspection
================================================================================While copper conducts heat well, it tarnishes, leaches metallic ions into beer, and rapidly corrodes when exposed to hot caustic (CIP) chemicals and acid sanitizers. Stainless steel (AISI 304/316L) is completely chemically inert, 100% CIP-compatible, meets 3-A sanitary food standards, and delivers a 20+ year service life without off-flavors.
Every CST brewery coil is manufactured from seamless tubing with zero submerged weld seams, bent using automated CNC mandrels, and electropolished down to Ra≤0.4 μm. This mirror-smooth finish eliminates microscopic pits, preventing beer stone and wild yeast adherence.
Yes. We custom-engineer coils with exact coil diameters, pitch heights, riser lengths, and sanitary Tri-Clamp bulkhead connections to drop directly into existing non-jacketed tanks, open fermenters, or brew kettles.
Maintain absolute beer purity, achieve rapid wort knockdown, and ensure precision fermentation control with CSTHEATEXCHANGER:
Custom Sanitary Stainless Steel Beer Cooling Coils
Seamless AISI 304 & AISI 316L Food-Grade Metallurgy (ASTM A270 / 3-A Sanitary / FDA)
Mirror Electropolished Surface Finish (Ra≤0.4 μm) for Superior Anti-Fouling
CNC Continuous Bending with Zero Submerged Welds for Maximum Biological Safety
Internal Helical Fermentation Coils, Immersion Wort Chillers & Counterflow Bundles
Full Factory Pressure Testing, 100% Helium Certified & Fast Global Direct Export
Contact our specialized brewery thermal engineering team today with your tank volume (BBL or Liters), cooling medium (glycol/water temperature), batch chilling time targets, and vessel dimensions for custom 2D/3D CAD proposals and factory-direct quotations.
Website: https://www.cstheatexchanger.com/
Technical Inquiries: info@cstheatexchanger.com
