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Stainless Steel 317, 317L & 317LN Pipes & Tubes Supplier & Stockist in India
Severe chemical handling, flue gas desulfurization, and acidic fluid conveyance require versatile molybdenum-bearing austenitic alloys built to withstand intergranular decay. As a premier Stainless Steel 317L Pipes & Tubes Supplier in India, Steel Emporium delivers precision-engineered tubing certified for high-pressure applications.
To meet tight production schedules, we operate as a full-inventory Stainless Steel 317 Pipes & Tubes Stockist in India, providing ready-to-ship SS 317 and 317L pipes and tubes in seamless, ERW, and welded options. Backed by 25+ years of industry expertise, our supply chain strictly meets ISO 9001:2015 quality standards with full mill test certification.
Engineers seeking thermal stability up to 870°C can explore our complementary stock of heat-resistant Stainless Steel 321 & 321H Pipes & Tubes for elevated-temperature services.
When high-pressure equipment requires superior yield strength with maximum pitting resistance, rely on a trusted Stainless Steel 317LN Pipes & Tubes Stockist in India. We deliver ASTM A312, A213, and A269 certified SS 317LN stock at direct factory rates.
Jump To Section: Material Specs | Grade Selection | Size Chart | FAQs
ASTM A213 / A269 / A312 SS 317 Series Technical Specifications
Our processing facilities deliver precision cold drawing, bright annealing, custom length cutting, and surface polishing across all high-molybdenum grade variants.
| Technical Parameter | Specification Scope & Manufacturing Capabilities |
|---|---|
| Governing Specifications | ASTM A213 / A269 / A312, ASME SA312, DIN, EN, JIS, AISI |
| Grade Variants | Stainless Steel 317 (UNS S31700), 317L (UNS S31703), 317LN (UNS S31753) |
| Manufacturing Types | Seamless, Welded, ERW, EFW, Cold Drawn (CDW), Hot Finished |
| Profile Configurations | Round, Square, Rectangular, Hydraulic, Custom Shapes |
| Outside Diameter (OD) Scope | Seamless: 6 mm to 114.3 mm OD | Welded / ERW: 10 mm to 114.3 mm OD (1/2" to 24" Nominal) |
| Schedule Wall Thickness Range | SCH 5S, SCH 10S, SCH 20, SCH 30, SCH 40S, STD, SCH 80S, SCH 120, SCH 160, XXS |
| Length & End Treatments | 1m to 12.5m, Custom Cut | Plain, Beveled, Threaded Ends |
| Surface Finish & Coatings | AP (Annealed & Pickled), BA (Bright Annealed), 180–400 Grit Polish, Electropolished |
Buy & Source the Right Grade: SS 317, 317L & 317LN Pipes
SS 317 Pipes & Tubes – Premium High-Molybdenum Chemical Grade
Standard SS 317 Pipes contain a high-molybdenum matrix with 18-20% chromium and 3-4% molybdenum, providing exceptional resistance to severe pitting and oxidation in aggressive acid media. As a dedicated Stainless Steel 317 Pipes & Tubes Stockist in India, we supply this grade for chemical processing lines, acid handling equipment, and pulp bleaching towers where standard 316 steel faces severe pitting attack.
SS 317L Pipes & Tubes – Low Carbon for Safe Welding
Sourcing from a primary Stainless Steel 317L Pipes & Tubes Supplier in India provides an ultra-low carbon alloy (0.030% max) that prevents chromium carbide precipitation during welding. This allows heavy-gauge SS 317L Tubes and pipes to operate safely in aggressive chemical environments in the as-welded condition without needing post-weld solution annealing.
SS 317LN Pipes & Tubes – High-Strength Nitrogen-Enhanced Alloy
Partnering with a specialized Stainless Steel 317LN Pipes & Tubes Stockist in India grants access to a nitrogen-alloyed (0.10-0.22%) low-carbon matrix. The addition of interstitial nitrogen acts as a solid-solution strengthener, raising the yield strength of SS 317LN Pipes to 245 MPa min—significantly higher than 317L—while retaining maximum resistance to intergranular corrosion and severe pitting attack.
Chemical, Mechanical & Equivalent Specifications
| Element / Parameter | SS 317 (UNS S31700) | SS 317L (UNS S31703) | SS 317LN (UNS S31753) |
|---|---|---|---|
| Carbon (C) | 0.08% Max | 0.030% Max | 0.030% Max |
| Manganese (Mn) | 2.00% Max | 2.00% Max | 2.00% Max |
| Silicon (Si) | 0.75% Max | 0.75% Max | 0.75% Max |
| Phosphorus (P) | 0.045% Max | 0.045% Max | 0.045% Max |
| Sulfur (S) | 0.030% Max | 0.030% Max | 0.030% Max |
| Chromium (Cr) | 18.0 – 20.0% | 18.0 – 20.0% | 18.0 – 20.0% |
| Nickel (Ni) | 11.0 – 14.0% | 11.0 – 15.0% | 11.0 – 15.0% |
| Molybdenum (Mo) | 3.0 – 4.0% | 3.0 – 4.0% | 3.0 – 4.0% |
| Nitrogen (N) | -- | 0.10% Max | 0.10 – 0.22% |
| Mechanical Property | SS 317 | SS 317L | SS 317LN |
|---|---|---|---|
| Tensile Strength (MPa min) | 515 | 515 | 550 |
| Yield Strength 0.2% Proof (MPa min) | 205 | 205 | 245 |
| Elongation (% in 50 mm min) | 35% | 35% | 35% |
| Hardness (Brinell Max) | 217 HBW | 217 HBW | 217 HBW |
| Standard / Grade | WERKSTOFF NR. | UNS Number | EN Standard | JIS (Japan) |
|---|---|---|---|---|
| SS 317 | 1.4449 | S31700 | X2CrNiMo19-14-4 | SUS 317 |
| SS 317L | 1.4438 | S31703 | X2CrNiMo18-15-4 | SUS 317L |
| SS 317LN | 1.4434 | S31753 | X2CrNiMoN18-12-4 | SUS 317LN |
Stainless Steel 317 Series Size & Schedule Chart
| Nominal Size (NB) | SCH 5S / 10S Wall | SCH 40S Wall | SCH 80S / 160 Wall |
|---|---|---|---|
| 1/2" NB (21.34 mm OD) | 1.65 mm / 2.11 mm | 2.77 mm | 3.73 mm / 4.78 mm |
| 3/4" NB (26.67 mm OD) | 1.65 mm / 2.11 mm | 2.87 mm | 3.91 mm / 5.56 mm |
| 1" NB (33.40 mm OD) | 1.65 mm / 2.77 mm | 3.38 mm | 4.55 mm / 6.35 mm |
| 1-1/2" NB (48.26 mm OD) | 1.65 mm / 2.77 mm | 3.68 mm | 5.08 mm / 7.14 mm |
| 2" NB (60.32 mm OD) | 1.65 mm / 2.77 mm | 3.91 mm | 5.54 mm / 8.74 mm |
| 3" NB (88.90 mm OD) | 2.05 mm / 3.05 mm | 5.49 mm | 7.62 mm / 11.13 mm |
| 4" NB (114.30 mm OD) | 2.11 mm / 3.05 mm | 6.02 mm | 8.56 mm / 13.49 mm |
| 6" NB (168.28 mm OD) | 2.77 mm / 3.40 mm | 7.11 mm | 9.52 mm / 18.26 mm |
Key Industrial Applications
The 317 series offers high corrosion resistance across demanding chemical, power, and marine environments.
Chemical & Petrochemical Refining (SS 317L)
Low-carbon SS 317L pipes handle organic acid distillation and chemical storage without intergranular corrosion in welded zones.
Pulp, Paper & Textile Bleaching (SS 317)
Bright annealed SS 317 tubes deliver superior pitting resistance in chlorine bleaching towers and dye vat systems.
Marine Scrubbers & Offshore Loops (SS 317LN)
Nitrogen-enhanced SS 317LN tubes provide high yield strength and severe chloride pitting resistance for marine exhaust systems.
Power Generation & FGD Systems (SS 317 / 317L / 317LN)
Seamless 317 series tubes withstand high pressure, acidic condensation, and sulfur dioxide in condenser lines and wet scrubbers.
Quality Assurance, MTC Certification & Testing Standards
Every shipment processed by Steel Emporium undergoes verification under our ISO 9001:2015 & PED 2014/68/EU Quality Policy to guarantee compliance.
| Certification / Standard | Compliance & Testing Scope |
|---|---|
| ISO 9001:2015 & Pressure Scope | 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, eddy current, and flaring tests guarantee 100% seam integrity. |
| Third-Party Inspection (TPI) | Inspection-ready for SGS, TUV, Bureau Veritas, or Lloyds. |
| Registered Corporate Office | 102, Durga Devi Street, Mumbai - 400004, Maharashtra, India |
| Central Warehouse & Stockyard | Plot 943, Kalamboli Steel Market, Navi Mumbai - 410218, Maharashtra, India |
Frequently Asked Questions
Request a Technical Sourcing Quote
Ready to source high-performance 317, 317L, or 317LN stainless steel piping for your project? Connect with our technical sales specialists today for competitive wholesale pricing, MTC documentation, and global export shipping schedules.