ASTM A554 TP304 stainless steel welded pipe, brushed finish 180G 600G
Oct 13, 2025
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GNEE supplies ASTM A554 TP304 welded stainless steel mechanical tubes, designed for applications where appearance, mechanical properties, and corrosion resistance are essential. These tubes are made from flat-rolled steel and are produced using an automated welding process without filler metal. They are available in various shapes, including round, square, and rectangular.
Surface finishes for ASTM A554 TP304 stainless steel tubes include bright annealing (BA), which provides a smooth, mirror finish with a Ra ≤ 0.1 μm, and pickled annealing (No.1/2B), which results in a uniform silver-gray appearance. The inner surface is clean and smooth, with no oxide residue, ensuring low fluid resistance and meeting high hygiene standards.
GNEE also offers custom services such as precision cutting, polishing, and surface treatments to meet specific project needs.


ASTM A554 Stainless Steel 304 Square Tube Details
| Grades | ASTM A554 MT304/ MT304L |
| Size Range | ½" to 8" Dia |
| Wall Thickness | 0.049" to 0.375" |
| Manufacturing Type |
Seamless / ERW / Welded / Fabricated / CDW / CDS / DOM / CEW / 100% X Ray Welded |
| Delivery Condition (Welded) | Cold reduced and annealing, Annealed and Pickled (AP), cold reduced |
| Surface Finish | Polished 180 grit, polished 320 grit, Mill finish |
| Standard | SUS, JIS, AISI, ASTM, GB, DIN, EN |
| Swg & Bwg | 10 Swg., 12 Swg., 14 Swg., 16 Swg., 18 Swg., 20 Swg. |
| Processing Service | Bending, Welding, Decoiling, Punching, Cutting, Moulding |
| Technique | Cold drawn, Cold rolled, Hot rolled, Extrusion Tube |
| Tolerance |
Outer Diameter: +/- 0.2mm Thickness: +/- 10% OR as customer request Length: +/- 10mm |
ASTM A554 TP304 Stainless Steel Welded Tube Chemical Composition
| Grade | Carbon | Nickel | Manganese | Sulfur | Chromium | Phosphorus | Silicon |
| 304 | 0.08 | 8.0-11.0 | 2 | 0.03 | 18.0-20.0 | 0.045 | 1 |
ASME SA554 Grade Mt 304 Tubing Mechanical Properties
| Material | Temperure | Heat | Yield Strength | Tensile Strength | Elongation |
| Min.º F(º C) | Treatment | Ksi (MPa), Min. | Ksi (MPa), Min. | ||
| 304 | 1900 (1040) | Solution | 30(205) | 75(515) | 35 |
Applications of ASTM A554 TP304 Welded Pipes:
1. Food Processing Industry
2. Pharmaceutical Industry
3. Chemical Processing Industry
4. Oil and Gas Industry
5. Architecture and Construction
6. Marine Applications
7. Heating, Ventilation, and Air Conditioning
8. Water Treatment Plants
9. Agricultural Equipment
Gnee Steel specializes in the production and sale of a wide range of stainless steel products, including 304, 316, 321, 904, 904L, and 2205 duplex stainless steel. Gnee Steel's products are widely used in the kitchen, aerospace, chemical, power, automotive, and nuclear energy sectors. We also provide customized stainless steel solutions tailored to customer needs. For stainless steel pricing or custom alloy solutions, please email sales@gneestainless.com for a quote.
Packaging and Delivery
Packaging: Moisture- and shock-resistant packaging, with wooden crates or plastic packaging for safe delivery.
Delivery Time: 7-15 days for in-stock items, 20-30 days for custom orders.
Minimum Order Quantity (MOQ): 500 kg for sample orders; bulk discounts available.
Payment Terms: T/T, L/C, PayPal, or flexible terms for long-term customers.

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