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304 Precision Bright Steel Pipe

OD 6-42mm, ±0.05mm tolerance, electronic component casing)

304 precision bright tube adopts an 18Cr-8Ni austenitic structure, with inner and outer diameter tolerance of ±0.05mm (≤10mm) and surface roughness Ra≤0.4μm (BA grade), making it suitable for precision sleeves in electronic components.

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  • High Precision

    Inner and outer diameter tolerance of ±0.05mm, meeting precision assembly requirements for electronic components.

  • Bright Surface

    BA-grade surface (Ra≤0.4μm), eliminating the need for secondary polishing, suitable for optical component sleeves.

  • Non-Magnetic

    Magnetic permeability close to pure copper, ensuring no impact on EMC (electromagnetic compatibility) of electronic devices.

Product Specifications

Chemical Composition (ASTM A213 Standard)
Element Content (%) Electronic Application Analysis
Cr (Chromium) 17.0–19.0 Forms a thin passive film to prevent moisture corrosion of electronic components, film thickness ≤1nm.
Ni (Nickel) 8.0–10.0 Stabilizes austenite structure, ensuring dimensional stability ≤0.01% in -40℃ to 80℃ range.
Physical & Chemical Properties

  • Physical Properties: Density 7.93g/cm³, melting point 1398–1454℃, thermal expansion coefficient 17.3×10⁻⁶/℃, adaptable to temperature differences in electronic equipment.

  • Surface Properties: Contact resistance ≤10μΩ·cm, preventing signal attenuation, compliant with ISO 14362-1 standard.

Specifications & Supply Dimensions
  • Outer Diameter: 3–25mm (tolerance ±0.05mm)
  • Wall Thickness: 0.5–3mm (tolerance ±0.03mm)
  • Length: 1–3m (fixed length tolerance ±1mm)
  • Surface Treatment: BA bright annealing (Ra≤0.4μm), inner wall mirror polishing (Ra≤0.2μm), optional anti-static coating.

Pricing Calculation

Workshop & Manufacturing Machine

Stainless Steel Tubes Packed in Truck

Wooden Crate Packaging in Factory

Neo-Mac Machine with Stainless Steel Tubes

Factory Tube Packaging Process

Industrial Manufacturing Equipment

Stainless Steel Composition Analyzer

Product Applications

  • Semiconductor Equipment

    Specification: Φ6×1mm
    Advantage Data: Precision ±0.03mm, no magnetic interference
    Case: SMIC lithography machine gas pipeline

  • Precision Instruments

    Specification: Φ12×1.5mm
    Advantage Data: Surface Ra≤0.3μm, corrosion resistant
    Case: Huawei 5G base station RF component sleeve

FAQ

What is 304 precision bright steel pipe?

It is a high-precision stainless steel pipe with a bright surface finish, designed for applications requiring tight tolerances and smooth interiors.

What industries commonly use precision bright pipes?

Common industries include hydraulic systems, pneumatic equipment, automotive components, and mechanical engineering.

How does precision bright pipe differ from standard welded pipe?

Precision bright pipes offer superior dimensional accuracy, surface smoothness, and consistency.

What tolerances can be achieved with 304 precision pipes?

Tight dimensional tolerances can be achieved depending on size and production method.

Can these pipes be supplied in cut-to-length form?

Yes. Custom lengths and straightness requirements are supported.

Need more details on stainless steel products? Feel free to contact Walmay anytime.

Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.

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