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The seamless stainless steel tubing for heat exchangers is manufactured from austenitic stainless steels including 201, 304, 316, and 321 grades. These materials provide excellent corrosion resistance, thermal conductivity, and mechanical strength, making them ideal for heat exchanger applications in chemical, petrochemical, food, and power industries.
| Form | Seamless stainless steel tubing |
| Outer diameter | 6 mm – 101.6 mm |
| Wall thickness | 0.5 mm – 6 mm |
| Surface finish | Pickled, bright annealed (BA), or polished |
| End condition | Plain, beveled, or threaded as required |
| Testing | Dimensional, hydrostatic pressure, eddy current, and surface inspection |
Excellent corrosion resistance in water, steam, and chemical environments
High thermal conductivity for efficient heat transfer
Seamless construction → no welding defects, improved strength and leak resistance
Durable under high pressure and temperature conditions
Smooth internal surface → reduces scaling and fouling
Long service life in demanding industrial applications
| Grade | C (max) | Mn (%) | P (max) | S (max) | Si (%) | Cr (%) | Ni (%) | Mo (%) | Ti/Nb (%) |
| 201 | 0.15 | 5.5–7.5 | 0.045 | 0.03 | 1.00 | 16–18 | 3.5–5.5 | – | – |
| 304 | 0.08 | 2.0 | 0.045 | 0.03 | 1.00 | 18–20 | 8–11 | – | – |
| 316 | 0.08 | 2.0 | 0.045 | 0.03 | 1.00 | 16–18 | 10–14 | 2–3 | – |
| 321 | 0.08 | 2.0 | 0.045 | 0.03 | 1.00 | 17–19 | 9–12 | – | Ti ≥5×C |
| Grade | Tensile Strength (MPa) | Yield Strength(MPa) | Elongation (%) | Hardness (HRB, max) |
| 201 | 520 | 205 | 35 | 95 |
| 304 | 515 | 205 | 40 | 92 |
| 316 | 515 | 205 | 40 | 95 |
| 321 | 515 | 205 | 35 | 95 |
201 – Economical, general-purpose austenitic stainless steel with moderate corrosion resistance
304 – Most commonly used stainless steel with excellent corrosion resistance and weldability
316 – Enhanced corrosion resistance due to molybdenum, suitable for chloride environments
321 – Titanium stabilized for high-temperature service, resistant to intergranular corrosion
Heat exchangers in chemical, petrochemical, and food industries
Condensers and evaporators in power generation and refrigeration
Sanitary process equipment for food, dairy, and beverage applications
High-temperature service equipment in boilers, superheaters, and hot water lines
Marine and offshore heat exchanger tubing in corrosive environments
EN 10216-5 – Seamless stainless steel tubes for pressure purposes
ASTM A213 / A269 – Seamless stainless tubing for heat exchangers and boilers
ASTM A312 – High-temperature stainless steel seamless tubes
Duplex grades (2205, 2507) – For higher strength and superior corrosion resistance in aggressive environments
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
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Seamless Steel Tubes ,
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Automotive Steel Tubes,
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Special Shaped Steel Tubes
