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ASTM A554 304 Polished Stainless Steel Round Tube Ornamental and Structural Grade
| MOQ: | 5Ton |
| Price: | Based on grade, size, surface, processing, quantity and current raw material market price. |
| Standard Packaging: | Standard seaworthy export packing with bundles, waterproof wrapping, pallets or wooden cases. |
| Delivery Period: | 7-15 |
| Payment Method: | L/C,D/A,D/P,T/T,Western Union |
| Supply Capacity: | Stock supply, regular production and custom manufacturing available. |
Shaanxi Shangyou Stainless Steel Co., Ltd. supplies ASTM A554 304 polished stainless steel round tube for global fabricators, architectural contractors, furniture manufacturers, and automotive exhaust system producers requiring decorative and structural tubing with high-quality surface finishes. Produced to ASTM A554/A554M, this specification covers welded austenitic stainless steel mechanical tubing intended for ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed.
ASTM A554 is the standard specification for welded stainless steel mechanical tubing. 304 (UNS S30400, MT-304) is the most widely used austenitic stainless steel grade, containing 18.0-20.0% chromium and 8.0-11.0% nickel, offering excellent corrosion resistance and formability. The tubes are manufactured from flat-rolled steel by an automatic welding process without the addition of filler metal. The specification covers as-welded or cold-reduced mechanical tubing in sizes to 16 in. [406.4 mm] outside dimension, with wall thicknesses of 0.020 in. [0.51 mm] and over, in round, square, rectangular, or special shapes. Polished finishes range from satin/brushed (180-600 grit) to high mirror finishes (8K) for decorative and hygienic applications.
| Dimension | Specification |
|---|---|
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Product Name
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ASTM A554 304 Polished Stainless Steel Round Tube |
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Product Alias
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Ornamental Tube / Polished Round Tube / A554 Polished Tubing / 304 Mirror Tube / Handrail Tube |
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Material Type
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Austenitic Stainless Steel (Welded, No Filler Metal) |
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Key Feature
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Polished finishes from satin to mirror 8K; welded without filler; OD to 16in; ornamental and structural grade |
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UNS Number
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UNS S30400 |
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Chemical Composition
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Cr 18.0-20.0% / Ni 8.0-11.0% / C ≤0.08% / Mn ≤2.00% / Si ≤1.00% / P ≤0.040% / S ≤0.030% / Fe Balance |
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Mechanical Properties
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Tensile ≥520 MPa / Yield ≥210 MPa / Elongation ≥35% / Hardness ≤200 HV |
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Manufacturing Process
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Flat-Rolled Coil → Forming → Automatic Welding (No Filler Metal) → Sizing → Surface Polishing → Testing |
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Polished Finishes
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Satin (180/240/320/400/600 grit) / Brushed / Hairline HL / Mirror / 8K |
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Primary Applications
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Handrails & Balustrades / Furniture / Exhaust Systems / Signage / Medical Equipment / Architectural Decor |
| Parameter | Available Options |
|---|---|
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Product Standard
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ASTM A554/A554M |
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Grade
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MT-304 (UNS S30400) |
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Outside Diameter (OD)
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Up to 16 in. [406.4 mm] |
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Wall Thickness (WT)
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0.020 in. [0.51 mm] and over |
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Length
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Cut-to-length per order; standard stock lengths 17-24ft |
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Shape
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Round (Square/Rectangular available) |
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Welding Process
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Automatic welding, no filler metal added |
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Delivery Condition
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As-Welded / Cold-Reduced |
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Polished Finish Options
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Satin 180/240/320/400/600 grit / Brushed / Hairline / Mirror / 8K |
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Inspection
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Tension Test / Flattening Test / Hydrostatic or NDE Test |
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Documents
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MTC 3.1 / Inspection Reports / Packing List / Heat Number Traceability |
ASTM A554 304 polished round tube is specified for decorative and structural applications where appearance, corrosion resistance, and mechanical properties are required.
Typical applications include:
- Architectural handrails, balustrades, and stair railings
- Furniture frames and display fixtures
- Automotive and truck exhaust systems
- Medical equipment and hospital furniture
- Signage and display systems
- Scaffolding and support structures
- Decorative architectural trim and storefronts
- Food processing equipment (with hygienic polished finishes)
Key selection considerations: ASTM A554 is the mechanical tubing specification—these tubes are not intended for pressure-containing or fluid-handling systems. Select polished finishes based on application requirements: satin/brushed (180-320 grit) for general architectural and structural applications; hairline (HL) for uniform grain direction on handrails; mirror/8K for high-end decorative, medical, and sanitary applications. 304 grade offers good corrosion resistance for interior and most exterior applications; for marine or high-chloride environments, 316 grade is recommended. Tubes can be supplied as-welded or cold-reduced depending on dimensional and strength requirements.
Shangyou Stainless Steel provides value-added processing including custom cutting, bending, welding, and polishing for mechanical tubing. Packaging must protect polished surface finishes from damage during transport.
All tubes are packed with export-standard protection including plastic sleeving, protective end caps, steel strapping, waterproof wrapping, and wooden pallets or steel frames.
Quality documents include MTC 3.1, inspection reports, packing list, and heat number traceability. Third-party inspection (SGS, TUV, BV) can be arranged upon request.
1. What is ASTM A554?
ASTM A554 is the standard specification for welded stainless steel mechanical tubing for ornamental, structural, exhaust, and other applications where appearance, mechanical properties, or corrosion resistance is needed.
2. What is the UNS number for 304?
UNS S30400.
3. What is the chemical composition of 304?
Cr 18.0-20.0%, Ni 8.0-11.0%, C ≤0.08%, Mn ≤2.00%, Si ≤1.00%, Fe Balance.
4. What mechanical properties does 304 have?
Tensile ≥520 MPa, Yield ≥210 MPa, Elongation ≥35%, Hardness ≤200 HV.
5. What is the difference between ASTM A554 and ASTM A269?
ASTM A554 covers mechanical tubing for non-pressure applications (ornamental, structural); ASTM A269 covers pressure-containing tubing for general service with mandatory heat treatment.
6. Is filler metal used in welding ASTM A554 tube?
No. Tubes are manufactured by an automatic welding process without the addition of filler metal.
7. What polished finishes are available?
Satin/brushed (180-600 grit), hairline (HL), mirror finish, and 8K (high mirror).
8. What size range does ASTM A554 cover?
Up to 16 in. [406.4 mm] outside dimension, with wall thickness 0.020 in. [0.51 mm] and over.
9. What are typical applications for A554 polished tubes?
Handrails, balustrades, furniture, exhaust systems, signage, medical equipment, and architectural decor.
10. Can ASTM A554 tube be used for pressure applications?
No. ASTM A554 is for mechanical/structural applications only and is not for fluid-handling or pressure-rated systems.
Request a Quote
Need ASTM A554 304 polished stainless steel round tube for handrails, furniture, exhaust systems, or architectural applications? Send requirements including grade (304), OD/wall thickness/length, polished finish (satin/hairline/mirror/8K), quantity, and intended application.
Shangyou Stainless Steel provides custom sizes, finishes, processing, and export solutions for global B2B customers.
