Changzhou Joyruns Steel Tube CO.,LTD
| Technique | Cold Drawn |
| Wallthickness | 0.5mm - 3mm |
| Pressurerating | Up to 25 MPa |
| Wall Thickness | 0.1mm-20mm |
| Packaging Details | Plastic packing,wooden box packing all is according requirement |
| Standard | ASTM A790 |
| Supply Ability | 2000T /M |
| Manufacturingstandard | ASTM A213, ASTM A269 |
| Material | Stainless Steel |
| Payment Terms | T/T |
| Hs Code | 7306400000 |
| Delivery Time | 20days |
| Mechanicalproperties | High tensile strength and durability |
| Surface | Annealing,polished,Pickled |
| Model Number | 20MM TO 140MM |
| Brand Name | JOYRUNS |
| Certification | ISO9001 |
| Place of Origin | CHINA |
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Product Specification
| Technique | Cold Drawn | Wallthickness | 0.5mm - 3mm |
| Pressurerating | Up to 25 MPa | Wall Thickness | 0.1mm-20mm |
| Packaging Details | Plastic packing,wooden box packing all is according requirement | Standard | ASTM A790 |
| Supply Ability | 2000T /M | Manufacturingstandard | ASTM A213, ASTM A269 |
| Material | Stainless Steel | Payment Terms | T/T |
| Hs Code | 7306400000 | Delivery Time | 20days |
| Mechanicalproperties | High tensile strength and durability | Surface | Annealing,polished,Pickled |
| Model Number | 20MM TO 140MM | Brand Name | JOYRUNS |
| Certification | ISO9001 | Place of Origin | CHINA |
High-temperature resistance · Creep resistance · Finned tubes · Pickling & blasting services
Our welded stainless steel tubes are manufactured from austenitic grades 304, 316, 316L and duplex grade S32205. Designed for demanding applications including boilers, heat exchangers, new energy cooling systems, structural components, and automotive parts. We also provide in‑house surface treatment (blasting, pickling) and fin rolling for high‑efficiency heat dissipation.
| Grade | Key Characteristics (SEO focus) |
|---|---|
| 304 | General‑purpose austenitic stainless steel – good oxidation resistance and formability. |
| 316 | Molybdenum‑bearing (2‑3% Mo) – improved creep resistance and chloride corrosion resistance. |
| 316L | Low‑carbon version of 316 – eliminates intergranular corrosion after welding. Ideal for sustained high‑temperature service up to 850°C. |
| S32205 | Duplex stainless steel (22% Cr, 5% Ni, 3% Mo, 0.17% N). Double yield strength compared to 304/316, excellent stress corrosion cracking resistance. |
| Element | 304 | 316 | 316L | S32205 |
|---|---|---|---|---|
| Carbon (C) | ≤0.08 | ≤0.08 | ≤0.030 | ≤0.030 |
| Chromium (Cr) | 18.0–20.0 | 16.0–18.0 | 16.0–18.0 | 22.0–23.0 |
| Nickel (Ni) | 8.0–10.5 | 10.0–14.0 | 10.0–14.0 | 4.5–6.5 |
| Molybdenum (Mo) | — | 2.0–3.0 | 2.0–3.0 | 3.0–3.5 |
| Nitrogen (N) | — | — | — | 0.14–0.20 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
*Full composition (Mn, Si, P, S) available upon request. All values meet ASTM A249 / A269.*
| Property | 304 | 316 | 316L | S32205 |
|---|---|---|---|---|
| Tensile Strength Rm (MPa) | ≥515 | ≥515 | ≥485 | ≥620 |
| Yield Strength Rp0.2 (MPa) | ≥205 | ≥205 | ≥170 | ≥450 |
| Elongation (%) | ≥40 | ≥40 | ≥40 | ≥25 |
| Hardness | ≤90 HRB | ≤95 HRB | ≤95 HRB | ≤290 HB |
| Modulus of Elasticity (GPa) | 193 | 193 | 193 | 200 |
✅ S32205 offers nearly double the yield strength – allows lighter wall thickness in structural applications.
| Grade | Max Continuous Service Temp. (°C) | Creep Resistance | Suitable for Sustained Load >500°C |
|---|---|---|---|
| 304 | 800 | Moderate | ❌ No |
| 316 | 850 | Good (Mo content) | ✅ Yes |
| 316L | 850 | Good (low carbon, stable) | ✅ Yes |
| S32205 | 600–650* | Very high (strength) | ❌ (limited to <650°C) |
*S32205 not recommended for long‑term exposure above 600°C due to sigma phase embrittlement. For extreme high‑temperature creep (650‑850°C), choose 316/316L.*
Company Details
Business Type:
Manufacturer,Agent,Exporter,Seller
Year Established:
2000
Total Annual:
10000000-20000000
Employee Number:
150~300
Ecer Certification：
Verified Supplier
Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufactur... Changzhou Joyruns Steel Tube Co., Ltd specializes in the export of steel pipes for 20 years. We have been a leading supplier of high-quality steel pipes of carbon, alloy, nickel material & copper, which is one of the most professional Bundy and stainless steel pipe manufactur...
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