Polished 304 Stainless Steel Tubing

Advantages of SS UNS S30400 Polished Pipe

Ra value classification: Ra≤0.8μm (industrial grade), Ra≤0.4μm (sanitary grade), Ra≤0.2μm (mirror grade) are provided.
304 stainless steel mirror pipe corrosion resistance: passivation treatment after polishing, Cr₂O₃ oxide film thickness increased by 30%, salt spray test over 1000 hours. Comply with ASTM A312, EN 10312, GB/T 12771 standards, passed FDA, EC 1935/2004 food contact certification.
304 Stainless Steel Electropolished Pipe mechanical properties: tensile strength ≥515MPa, elongation ≥40%, can withstand high pressure (up to 20MPa) and cold processing.

Click to learn about the price and technical parameters of 304 stainless steel pipe!

Material Grade: 304 (ASTM A312/A270, EN 10312, GB/T 12771)
Surface Finish: Mirror Polished (Ra ≤ 0.2μm), Sanitary Finish (Ra ≤ 0.4μm), Industrial Finish (Ra ≤ 0.8μm)

Dimensions & Tolerances

Parameter	Range	Tolerance
OD (Outer Diameter)	6 mm – 610 mm (0.236" – 24")	±0.5% (ASTM A269)
Wall Thickness	0.5 mm – 25 mm (0.02" – 0.98")	±10% (ASTM A269)
Length	Standard: 6 m, 12 m; Customizable up to 18 m	±5 mm (ASTM A269)

Surface Treatment

Process	Ra Value	Characteristics	Applications
Mirror Polishing	≤0.2μm	High reflectivity, particle-free surface	Semiconductor, medical devices
Electropolishing	≤0.4μm	Smooth, crevice-free finish	Pharmaceutical, food processing
Industrial Polishing	≤0.8μm	Uniform matte surface	General industrial use

Leading technology: Polishing equipment imported from Germany, with precision control of ±0.05mm.
Cost advantage: The automation rate of polishing process reaches 90%, and the price is 20% lower than similar products in Europe.
Professional certification: Passed ISO 9001, ISO 13485 (medical equipment), SGS third-party testing.

1. Polishing of stainless steel tubes
2. Beveling of stainless steel tubes
3. Honing and turning of stainless steel tubes
4. Heat treatment and annealing
5. Positive Material Identification (PMI)

Q. Can you provide samples?
A.We can provide them for free, you need to bear the shipping cost.
Q: Do you have quality control?
A: Yes, we have obtained BV and SGS certification.
Q: Can you arrange shipment?
A: Of course, we have a fixed freight forwarder, can get the best price from most shipping companies, and provide professional service.