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Stainless Steel 301 / 301L / 301LN Pipes & Tubes Supplier & Stockist in India
High-tensile structural systems require resilient austenitic alloys that maintain exceptional mechanical strength under extreme work-hardening conditions. Steel Emporium is a premier Stainless Steel 301 Pipes & Tubes Supplier in India, delivering fully certified high-yield tubing for demanding global engineering projects.
To support rapid project timelines, we serve as an established Stainless Steel 301 Pipes & Tubes Stockist in India, maintaining over 10,000 Tonnes of ready-to-ship inventory across seamless, ERW, and welded profiles. Backed by over 25+ years of industry expertise, every order adheres to our strict ISO 9001:2015 Quality Assurance System and mill certification standards.
If your project requires cost-effective low-nickel alternatives for lighter structural applications, you can also explore our full inventory of Stainless Steel 201, 201L & 201LN Pipes & Tubes.
For applications demanding enhanced weldability or nitrogen-strengthened mechanical properties, trust a reliable SS 301L Pipes & Tubes Supplier in India and proven SS 301LN Pipes & Tubes Stockist in India. We offer competitive factory pricing, complete MTC documentation, and streamlined global export services.
Jump To Section: Material Specs | Size Chart | FAQs
ASTM A312 / A213 SS 301, 301L & 301LN Pipe Specifications
Our processing facility executes precision forming, custom length adjustments, and edge beveling across all structural and pressure tubing standards.
| Technical Parameter | Specification Scope & Manufacturing Capabilities |
|---|---|
| Governing Material Specifications | ASTM A213, A269, A249, A312, A358, A511, A554 / ASME SA213, SA269, SA249, SA312, SA358 |
| Dimensional Standards | ANSI B36.19M, ANSI B36.10, ASME B36.19 |
| Manufacturing Processes | Seamless, ERW, Welded, Fabricated, CDW, 100% X-Ray Welded |
| Profile Configurations | Round (Circular), Square, Rectangular, Oval, Honed, Hydraulic Tubing |
| Schedule Wall Thickness Range | SCH 5, SCH 10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XS, SCH XXS |
| Pipe End Preps & Protection | Plain End, Beveled End, Threaded (TBE/TOE), Plastic Protective End Caps |
| Surface Finish Options | 2B, No.1, No.4, No.8 Mirror Finish, Annealed & Pickled, Custom Polish |
Alloy Grade Selection Guide: SS 301 vs SS 301L vs SS 301LN
Understanding the subtle metallurgical balance across the 301 series ensures optimal material selection for structural, automotive, and cryogenic applications.
SS 301 Pipes & Tubes – High-Tensile Austenitic Performance
Operating as a leading SS 301 Pipes & Tubes Stockist in India, we supply standard 301 grade material featuring high work-hardening rates. This grade develops ultra-high tensile strength during cold forming, making SS 301 Pipes & Tubes ideal for structural railcars, aircraft frames, and high-stress architectural elements.
SS 301L Pipes & Tubes – Low-Carbon Weldable Integrity
Sourcing from a certified SS 301L Pipes & Tubes Supplier in India prevents chromium carbide precipitation during heavy welding operations. With carbon controlled to 0.03% maximum, SS 301L Pipes & Tubes provide superior intergranular corrosion resistance in fabricated structural assemblies without requiring post-weld annealing.
SS 301LN Pipes & Tubes – Nitrogen-Enhanced Strength
Partnering with a recognized SS 301LN Pipes & Tubes Stockist in India grants access to nitrogen-strengthened austenitic steel. The deliberate addition of nitrogen (0.07% to 0.20%) allows SS 301LN Pipes & Tubes to achieve elevated yield strength while maintaining excellent ductility and impact toughness at cryogenic temperatures.
Chemical, Mechanical & Equivalent Specifications of SS 301, 301L & 301LN
| Element / Parameter | SS 301 | SS 301L | SS 301LN |
|---|---|---|---|
| Carbon (C) | 0.15% Max | 0.03% Max | 0.03% Max |
| Manganese (Mn) | 2.00% Max | 2.00% Max | 2.00% Max |
| Silicon (Si) | 1.00% Max | 1.00% Max | 1.00% Max |
| Phosphorus (P) | 0.045% Max | 0.045% Max | 0.045% Max |
| Sulphur (S) | 0.030% Max | 0.030% Max | 0.015% Max |
| Chromium (Cr) | 16.0 – 18.0% | 16.0 – 18.0% | 16.5 – 18.5% |
| Nickel (Ni) | 6.0 – 8.0% | 6.0 – 8.0% | 6.0 – 8.0% |
| Nitrogen (N) | — | 0.20% Max | 0.07 – 0.20% |
| Mechanical Property | SS 301 | SS 301L | SS 301LN |
|---|---|---|---|
| Tensile Strength (Rm) | 765 MPa (111,000 Psi) | 600 MPa (87,000 Psi) | 700 MPa (101,500 Psi) |
| Yield Strength (0.2% Offset) | 350 MPa (50,800 Psi) | 270 MPa (39,100 Psi) | 350 MPa (50,800 Psi) |
| Elastic Modulus | 193 GPa (27,992 ksi) | 193 GPa (27,992 ksi) | 193 GPa (27,992 ksi) |
| Poisson's Ratio | 0.300 | 0.300 | 0.300 |
| Elongation at Break (in 50 mm) | 40% Minimum | 45% Minimum | 45% Minimum |
| Standard / Grade | WERKSTOFF NR. | UNS Number | JIS (Japan) | GB (China) |
|---|---|---|---|---|
| SS 301 | 1.4310 | S30100 | SUS 301 | 1Cr17Ni7 |
| SS 301L | 1.4318 | S30103 | SUS 301L | 022Cr17Ni7 |
| SS 301LN | 1.4318 (Nitrogen Added) | S30153 | SUS 301LN | — |
Stainless Steel 301 Series Size & Schedule Chart
Refer to our standard ex-stock dimensional chart below for Nominal Bore (NB) sizes, outside diameters, and wall thicknesses available for immediate dispatch.
| Nominal Bore Size (NB / Inch) | Outside Diameter (OD in mm) | Available Schedules & Wall Thickness Scope |
|---|---|---|
| 1/2" NB | 21.34 mm | SCH 5S, SCH 10S, SCH 40S, SCH 80S (0.3 mm to 50 mm WT) |
| 3/4" NB | 26.67 mm | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160 |
| 1" NB | 33.40 mm | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS |
| 2" NB | 60.33 mm | SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, SCH XXS |
| 4" NB | 114.30 mm | SCH 10S, SCH 40S, SCH 80S, SCH 160 |
| 8" NB to 16" NB (Seamless Range) | 219.08 mm to 406.40 mm | SCH 10S, SCH 40S, SCH 80S, SCH XS |
| 18" NB to 24" NB (Welded / ERW Range) | 457.20 mm to 609.60 mm | SCH 5S, SCH 10S, SCH 40S, Custom Fabricated Heavy Wall |
Industrial Applications of 301 Series Pipelines
Selecting the right grade within the 301 family ensures maximum structural strength, long service life, and reliable corrosion performance.
Railcars & Automotive Frameworks (SS 301 / 301L)
Used for structural chassis pillars, side panels, and crash-worthy frames. High work-hardening rates deliver maximum impact absorption while reducing overall vehicle weight.
Aerospace & High-Stress Structural Tubing (SS 301)
Engineered for airframe stiffeners, hydraulic supports, and engine bay framing. Offers elevated tensile strength and high yield points under dynamic mechanical loads.
Heavy Welded Assemblies & Pressure Framing (SS 301L)
Ideal for welded fluid pipelines, structural trusses, and storage tanks. Low carbon content prevents intergranular weld-decay corrosion without needing post-weld annealing.
Cryogenic & Sub-Zero Liquid Pipelines (SS 301LN)
Deployed in LNG, liquid nitrogen, and oxygen transfer loops. Added nitrogen maintains exceptional ductility, impact toughness, and mechanical strength at cryogenic temperatures.
Architectural & High-Span Civil Supports (SS 301 Series)
Applied in glass curtain wall framing, structural columns, and exposed building grids. Combines high aesthetic appeal with high load-bearing capacity.
Quality Assurance, MTC Certification & Testing Standards
Every order dispatched by Steel Emporium undergoes multi-stage inspection under our ISO 9001:2015 & PED 2014/68/EU Quality Policy to guarantee complete heat traceability and structural integrity.
| Certification / Standard | Compliance & Testing Scope |
|---|---|
| ISO 9001:2015 & Pressure Compliance | Certified QMS with PED 2014/68/EU and AD 2000 Merkblatt approvals. |
| EN 10204 3.1 & 3.2 MTC | Official test reports covering heat numbers, chemistry, and factory origin tracking. |
| PMI & Lab Verification | 100% XRF spectro testing and NABL-accredited laboratory inspections. |
| Mechanical & Weld NDT | Hydrostatic, ultrasonic, and flaring tests guarantee 100% seam integrity. |
| TPI & Corporate Address | Inspection-ready for SGS, TUV, Bureau Veritas, or Lloyds. |
| Verified Corporate Address | Registered Head Office & Operations: 102, Durga Devi Street, Mumbai-400004, Maharashtra, India |
Frequently Asked Questions
- SS 301: Standard higher-carbon alloy designed for maximum cold-work hardening.
- SS 301L: Low-carbon variant engineered specifically to resist intergranular corrosion after heavy welding.
- SS 301LN: Low-carbon variant with added nitrogen to deliver both superior weldability and extra mechanical yield strength.
Request a Technical Sourcing Quote
Ready to source high-yield structural tubing for your project? Connect with our engineering sales specialists today to receive instant wholesale quotes, detailed MTC submittals, and international export timelines.