What Is STS304 2B Stainless Steel Pipe?
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What is STS304 2B stainless steel pipe?
Keywords: STS304 2B stainless steel pipe, 304 2B pipe, 2B surface finish stainless steel, cold-rolled 304 pipe, 304 stainless steel pipe supplier
STS304 2B stainless steel pipe refers to cold-rolled stainless steel pipe made from JIS standard STS304 material with a 2B surface finish. "STS304" corresponds to AISI 304 / EN 1.4301, a widely used austenitic stainless steel renowned for its excellent corrosion resistance, weldability, and hygienic properties. The "2B" surface finish represents a smooth, reflective cold-rolled surface achieved through a process of pickling, cold rolling, annealing, and skin-passing. While not as mirror-like as a BA (bright annealed) finish, it is smoother and cleaner than a No. 1 (hot-rolled) finish, making it the most commonly used finish for industrial and decorative piping.
If you want to know more details and prices of the products, please contact us in time! Email: info@gneestainless.com
STS304 2B stainless steel pipe Specifications
| Item | Description |
|---|---|
| Material Grade | JIS STS304 / AISI 304 / EN 1.4301 |
| Standard | ASTM A312 / JIS G3448 / JIS G3459 |
| Outer Diameter | 6 mm – 219 mm |
| Wall Thickness | 0.5 mm – 6.0 mm |
| Length | 6000 mm (customizable) |
| Finish | 2B cold rolled, pickled, or polished |
| Form | Seamless / Welded |
| Testing | 100% PMI, Eddy current, Hydrostatic, Mechanical test |
Chemical Composition (JIS G4305 STS304)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Silicon (Si) | ≤ 1.00 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
| Nickel (Ni) | 8.0 – 10.5 |
| Chromium (Cr) | 18.0 – 20.0 |
| Iron (Fe) | Balance |
Mechanical Properties
| Property | Typical Value |
|---|---|
| Density | 7.93 g/cm³ |
| Tensile Strength | ≥ 520 MPa |
| Yield Strength (0.2%) | ≥ 205 MPa |
| Elongation | ≥ 40% |
| Hardness (HRB) | ≤ 90 |
| Melting Point | 1400 – 1450°C |
Applications
Food & Beverage processing lines
Pharmaceutical and cleanroom piping
Chemical equipment and storage tanks
Architectural handrails and decorative structures
Heat exchangers and condensers
Water purification and plumbing systems
What's the price range of STS304 2B stainless steel pipe per kg?
As of current market trends, the price typically ranges from US$2.2 – US$3.0 per kg, depending on diameter, wall thickness, and surface quality.
Packaging and Delivery
Packaging: PVC film protection + moisture-proof paper + wooden boxes/pallets
Delivery Time: 7–15 days (stock) / 20–30 days (customized size)
Inspection: PMI, ultrasonic, mechanical, and surface inspection before shipment
FAQ
Q1: What does "2B" mean in stainless steel pipes?
A: "2B" refers to a cold-rolled, annealed, and skin-passed surface finish. It has a smooth, reflective surface commonly used in industrial and decorative applications.
Q2: Is 2B finish suitable for food-grade applications?
A: Yes. STS304 2B meets FDA hygiene standards, commonly used for food and beverage piping systems.
Q3: What's the difference between 2B and BA finishes?
A: 2B is semi-reflective and more economical, while BA is bright and mirror-like, used where aesthetics are critical.
Q4: Can Gnee supply custom sizes or cut-to-length 2B pipes?
A: Yes. Gnee offers custom cutting, slitting, polishing, and welding services with strict quality control and ISO-certified production lines.
