At Namo Alloy, we stock and export a comprehensive inventory of Stainless Steel 304 and 304L Pipes & Tubes, available in both seamless and welded (ERW) configurations. As the most widely utilized austenitic stainless steel, Grade 304 provides an excellent combination of strength, high corrosion resistance, and fabricability. The 304L (Low Carbon) variant minimizes carbide precipitation during welding, ensuring maximum joint integrity without the need for post-weld annealing. Whether used for food processing equipment, chemical transport, or structural architecture, our 304/304L tubular products are 100% mill-certified and comply strictly with ASTM A312 and ASME standards.
| Grade | C (Max) | Mn (Max) | Si (Max) | P (Max) | S (Max) | Cr | Ni | N (Max) |
|---|---|---|---|---|---|---|---|---|
| SS 304 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0 - 20.0 | 8.0 - 11.0 | 0.10 |
| SS 304L | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 18.0 - 20.0 | 8.0 - 12.0 | 0.10 |
| Grade | Tensile Strength (MPa) min. | Yield Strength 0.2% Proof (MPa) min. | Elongation (% in 50mm) min. | Hardness (Rockwell B) max. | Hardness (Brinell) max. |
|---|---|---|---|---|---|
| SS 304 | 515 | 205 | 35 | 90 HRB | 192 HB |
| SS 304L | 485 | 170 | 35 | 90 HRB | 192 HB |
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Specifications / Standards
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ASTM A312 / SA312 (Seamless/Welded Pipes) ASTM A213 / SA213 (Seamless Tubes) ASTM A249 / SA249 ASTM A269 (Welded Tubes) DIN 1.4301 / 1.4306 UNS S30400 / S30403 |
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Manufacturing Condition
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Seamless ERW (Electric Resistance Welded) EFW (Electric Fusion Welded) Cold Drawn (CDW) Fabricated / LSAW |
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Outer Diameter (OD) Range
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Seamless Pipes: 1/2" NB to 24" NB ERW/Welded Pipes: 1/2" NB to 48" NB Tubes (OD): 6.00 mm to 254.00 mm (Custom large-diameter fabricated pipes available) |
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Wall Thickness / Schedule
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SCH 5 / 5S
SCH 10 / 10S
SCH 40 / 40S
SCH 80 / 80S
SCH 160
XXS
Thickness: 0.5 mm to 50.0 mm |
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Standard Lengths
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Single Random Length (SRL) Double Random Length (DRL) Fixed Cut-to-Length (Up to 12 Meters) |
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Pipe End Connections
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Plain End (PE) Beveled End (BE) Threaded End |
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Surface Finishes
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Annealed & Pickled (AP) Bright Annealed (BA) Polished (Grit 180, 240, 400, 600) Mirror Finish / Electro-Polished |
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Testing & Certificates
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EN 10204 3.1 MTC Hydrostatic Testing Eddy Current Testing Radiography Testing (RT) Third Party Inspection (TPI) |
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Export Packaging
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Plastic End Caps Hexagonal Bundles Steel Banding Fumigated Wooden Boxes (for Tubes) Waterproof PVC Wrapping |
Namo Alloy is a leading stockist and global exporter of premium Stainless Steel, Carbon Steel, and High Nickel Alloys.
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