Stainless Steel Tube Solutions for HVAC & Refrigeration
In HVAC & Refrigeration systems, stainless steel tubing is widely used in cooling water systems, condenser water circuits, refrigeration loops, heat exchangers, and heat pump installations.
TORICH supplies a comprehensive portfolio of stainless steel tubing solutions, including seamless and welded tubes, capillary tubes, heat exchanger tubes, and finned tubes, all manufactured to meet the stringent performance and dimensional standards of modern HVAC and refrigeration systems.
From stainless steel heat exchanger tubes, condenser and evaporator tubes, U-bend tubes, capillary tubes, to finned tubes, TORICH delivers a complete one-stop supply solution tailored to the critical requirements of HVAC and refrigeration applications.
Size Range
TORICH supplies stainless steel tubes for HVAC & Refrigeration applications with a wide dimensional range, including outer diameter from 5 mm to 630 mm, wall thickness from 0.5 mm to 55 mm, and customized lengths up to 13,000 mm. We provide precision thin-wall tubes for heat exchangers, condensers, and evaporators, as well as larger diameter tubes for pressure and heat recovery systems.
Material Grades
TORICH offers a comprehensive selection of stainless steel and high-performance alloy materials, including 304/304L, 316/316L, 321, 310S, 904L, duplex stainless steels 2205/2507, and nickel alloys such as 600, 625, 825, and C276. These materials provide excellent corrosion resistance, high-temperature stability, and long service life for HVAC heat transfer, refrigeration, and energy recovery applications.
Standards
TORICH stainless steel tubes are manufactured according to ASTM, ASME, EN, DIN, and JIS standards, including ASTM A213, A249, A269, A312, EN 10216-5, and EN 10217-7, with customized requirements for dimensions, surface finish, and testing available.
Stainless Steel Tube Applications in HVAC & Refrigeration Systems
Shell & Tube Heat Exchangers
Tube Solution: Seamless / welded stainless steel tube / U-Bend tube / Finned Tube
Typical Grades: 304 /304L / 316L / 316 / 321/ 2205
Size Range: OD: 6–50.8 mm | WT: 0.5–3 mm
Standards: ASTM A269 / ASTM A249/ ASTM A213 / EN 10216-5 / EN 10217-7
Achievable Quality: OD tolerance ±0.05 mm, WT tolerance ±5%, tube straightness ≤1.0 mm/m, inner surface roughness Ra ≤0.8 μm, with 100% eddy current testing and hydrostatic testing.
HVAC Condenser
Tube Solution: Welded Thin Wall Tubes / Customized Length / Finned Tube
Typical Grades: 304 /304L / 316L / 316 / 2205
Size Range: OD: 8–50.8 mm | WT: 0.5–2.5 mm
Standards: ASTM A269 / ASTM A249/ ASTM A789
Achievable Quality: Dimensional accuracy up to OD ±0.05 mm and WT ±5%, surface finish BA with Ra ≤0.8 μm, 100% eddy current testing and pressure testing to guarantee corrosion resistance and leak-free operation.
HVAC Evaporator
Tube Solution: Precision Stainless Steel Tubes / U-Bend / High Cleanliness Tubes / Finned Tube
Typical Grades: 304L / 316L / 321/ 2205
Size Range: OD: 5–38 mm | WT: 0.4–3 mm
Standards: ASTM A269 / ASTM A249/ ASTM A213
Achievable Quality: Tight dimensional control with OD ±0.05 mm, WT ±5%, roundness ≤1% OD, internal cleanliness ≤50 mg/m² residual contamination, and 100% non-destructive testing available.
Refrigeration System
Tube Solution: Precision Stainless Steel Tubes / Seamless Stainless Steel Tubes / Small Diameter Stainless Tubes
Typical Grades: 304 / 304L / 316 / 316L / 2205
Size Range: OD: 3–114.3 mm | WT: 0.3–6 mm
Standards: ASTM A269 / ASTM A312 / EN 10217-7
Achievable Quality: OD tolerance ±0.03–0.05 mm, WT tolerance ±5%, straightness ≤1.0 mm/m, burr-free cutting, oil-free cleaning, and 100% leak testing for reliable refrigerant circulation.
Boiler & Heat Recovery
Tube Solution: High Temperature Stainless Tubes / Seamless Pressure Tubes / Heat Exchanger Tubes / Finned Tube
Typical Grades: 321/ 316L / 310S/ 2205
Size Range: OD: 10–114.3 mm | WT: 1–10 mm
Standards: EN 10216-5 / ASTM A789/ ASTM A213
Achievable Quality: OD tolerance ±0.05 mm, WT tolerance ±5%, mechanical properties controlled after heat treatment, ultrasonic testing and hydrostatic testing available for high-temperature and pressure applications.
HVAC Fluid Piping Systems
Tube Solution: Stainless Steel Welded / Seamless Pipes / Customized Cut-to-Length
Typical Grades: 304 / 304L / 316L / 2205
Size Range: OD: 6–630 mm | WT: 0.5–55 mm
Standards: ASTM A269 / ASTM A312/ EN 10217-7 / DIN 17457
Achievable Quality: OD tolerance ±0.05 mm, WT tolerance ±5%, surface roughness Ra ≤1.6 μm, straightness ≤1.0 mm/m, with 100% eddy current and hydrostatic testing for safe fluid transportation.
Customized Tube Solutions for HVAC & Refrigeration
1. Custom Dimensions and Tolerances
- TORICH offers customization for outer diameters (OD) ranging from 5 to 630 mm and wall thicknesses from 0.3 to 55 mm, including precision length cutting.
- OD tolerances can reach ±0.03–0.05 mm, with wall thickness tolerances within ±5%.
2. Surface Finish & Cleanliness Control
- Services include pickling and passivation, electropolishing, bright annealing, and custom marking (including private labeling/branding).
- Processes such as degreasing, drying, oxygen-free annealing, and nitrogen-purged or sealed packaging ensure high levels of tube cleanliness.
3. Deep Processing & Customization
- TORICH offers U-bends, serpentine coils, and coiled tubing; post-bending specifications ensure wall thinning rates of ≤10% and ovality of ≤5%.
- We supply various finned tubes-including high-frequency welded, G-type, and L-type-with customizable fin pitch, height, and thickness.
- End-processing services include squaring, chamfering, deburring, expanding/swaging/flaring, and threading (NPT/G).
4. Testing & Quality
Batch-specific raw material certificates (MTR 3.1/3.2) are provided, alongside reports for 100% hydrostatic testing and in-line eddy current testing.
Our Certificate
IATF 16949:2016
ISO 9001:2015
Environmental Management System Certificate
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Frequently Asked Questions
1. What types of stainless steel tubes do you supply for HVAC and refrigeration applications?
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TORICH supplies stainless steel seamless tubes, welded heat exchanger tubes, U-bend tubes, finned tubes, and precision bright-annealed tubes suitable for HVAC and refrigeration systems.
2. Which refrigerants are compatible with 304 and 316L stainless steel tubes?
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Both 304 and 316L offer excellent chemical compatibility with the vast majority of refrigerants. Grade 304 is suitable for common refrigerants such as R410A, R134a, R32, and R290. However, for CO₂ (R717) transcritical high-pressure systems, Grade 316L or higher is recommended due to its superior resistance to pressure and temperature.
3. Do you offer supply options in both coils and fixed-length straight tubes?
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Yes, both options are available. Small-diameter, thin-walled tubes (OD 3–22 mm) can be supplied in coils (50–500 meters per coil), thereby reducing the number of on-site welded joints and improving system sealing integrity.
4. Can you manufacture stainless steel tubes according to customer drawings?
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Yes, TORICH provides OEM customization services based on customer drawings and technical specifications. This includes special dimensions, tube bending, custom cut lengths, surface treatments, specific cleaning requirements, and tailored packaging solutions.
5. Do you provide moisture-proof packaging?
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TORICH utilizes export-grade packaging designed for ocean transport-including plastic end caps, internal moisture-proof oiled paper or plastic bags, wooden pallets, and stretch wrap-to completely seal out moisture and prevent rusting during 2–3 month sea voyages.