At Namo Alloy, we supply and export premium-grade Stainless Steel 316 and 316L Pipes & Tubes, available in both seamless and welded forms. Grade 316 is the standard molybdenum-bearing grade, second only to 304 in overall volume. The addition of molybdenum gives 316 superior overall corrosion resistant properties, particularly higher resistance to pitting and crevice corrosion in chloride environments. The 316L (Low Carbon) variant provides excellent resistance to intergranular corrosion after welding. These tubes are the definitive choice for marine applications, pharmaceutical manufacturing, and aggressive chemical processing plants. All products are 100% mill-certified to strict ASTM A312 specifications.
| Grade | C (Max) | Mn (Max) | Si (Max) | P (Max) | S (Max) | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| SS 316 | 0.08 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 |
| SS 316L | 0.035 | 2.00 | 1.00 | 0.045 | 0.030 | 16.0 - 18.0 | 10.0 - 14.0 | 2.0 - 3.0 |
| Grade | Tensile Strength (MPa) min. | Yield Strength 0.2% Proof (MPa) min. | Elongation (% in 50mm) min. | Hardness (Rockwell B) max. | Hardness (Brinell) max. |
|---|---|---|---|---|---|
| SS 316 | 515 | 205 | 35 | 90 HRB | 217 HB |
| SS 316L | 485 | 170 | 35 | 90 HRB | 217 HB |
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Specifications / Standards
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ASTM A312 / SA312 (Seamless/Welded Pipes) ASTM A213 / SA213 (High-Temp Tubes) ASTM A269 (General Service Tubes) ASTM A249 / SA249 (Welded Heat-Exchanger Tubes) DIN 1.4401 / 1.4404 UNS S31600 / S31603 |
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Manufacturing Condition
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Seamless ERW (Electric Resistance Welded) EFW (Electric Fusion Welded) Cold Drawn (Bright / Annealed) Solution Annealed & Pickled |
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Outer Diameter (OD) Range
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Seamless Pipes: 1/8" NB to 24" NB Welded Pipes: 1/2" NB to 48" NB Instrumentation Tubes: 1/16" OD to 2" OD (Custom heavy-wall and metric sizes available) |
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Wall Thickness / Schedule
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SCH 5S
SCH 10S
SCH 40S (Standard)
SCH 80S (Extra Strong)
SCH 160
XXS
Thickness Range: 0.5 mm to 60.0 mm |
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Standard Lengths
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Single Random (5-7 Meters) Double Random (10-12 Meters) Cut-to-Length Precision Pieces |
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Pipe End Connections
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Plain End (PE) Beveled End (BE) Threaded (NPT/BSPT) Victaulic Grooved |
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Surface Finishes
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2B (Mill Finish) No.4 Satin / Brushed BA (Bright Annealed) No.8 Mirror Polish Electropolished (EP) |
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Testing & Certificates
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EN 10204 3.1 / 3.2 MTC Pitting Corrosion Test (ASTM G48) Intergranular Corrosion (IGC) Test PMI (Positive Material Identification) Hydrostatic / Ultrasonic NDT |
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Export Packaging
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End Protective Caps Reinforced Steel Strapping Sea-worthy Wooden Crates Bubble Wrap / Stretch Film |
Namo Alloy is a leading stockist and global exporter of premium Stainless Steel, Carbon Steel, and High Nickel Alloys.
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