Girgaon, Mumbai - 400004
Kamal Steels is a leading Manufacturer & Stockist of Stainless Steel 317L Welded Tubes, supplying premium-quality welded tubing solutions for chemical processing, pharmaceutical plants, fertilizer industries, pulp & paper mills, marine engineering, petrochemical facilities, and other highly corrosive industrial applications. Manufactured from Stainless Steel 317L (UNS S31703 / WNR 1.4438), our welded tubes are produced in accordance with ASTM A249, ASTM A269, ASTM A270, ASTM A554, and ASME SA249 standards, ensuring outstanding dimensional accuracy, superior weld quality, exceptional corrosion resistance, and reliable mechanical performance. Stainless Steel 317L is the low-carbon version of SS 317, offering higher molybdenum content than SS 316L along with outstanding resistance to pitting, crevice corrosion, and aggressive chemical media while minimizing sensitization during welding.
Our Stainless Steel 317L Welded Tubes are manufactured using premium-quality stainless steel strips that are precision roll-formed and automatically welded using advanced TIG/ERW welding technology. The tubes are subsequently solution annealed, pickled, straightened, polished, and thoroughly inspected to achieve smooth surface finishes, excellent dimensional tolerances, and extended service life. These welded tubes provide outstanding resistance to sulfuric acid, phosphoric acid, chlorides, seawater, and other aggressive chemical environments, making them ideal for heat exchangers, condensers, pressure vessels, process piping, pollution control systems, and marine applications. Their low carbon content improves weldability and minimizes the risk of intergranular corrosion after welding.
At Kamal Steels, we maintain a comprehensive inventory of ASTM A249 Stainless Steel 317L Welded Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every tube undergoes rigorous quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection before dispatch. With certified quality, competitive pricing, export-standard packaging, and prompt worldwide delivery, Kamal Steels has established itself as a trusted manufacturer and supplier of Stainless Steel 317L Welded Tubes for critical corrosion-resistant industrial applications across global markets.

Stainless Steel 317L Welded Tubes are specially developed for applications requiring exceptional corrosion resistance, superior weldability, and long-term reliability in highly aggressive chemical environments. As the low-carbon version of Stainless Steel 317, Grade 317L minimizes carbide precipitation during welding while its higher molybdenum content provides significantly improved resistance to pitting, crevice corrosion, and chloride attack. Manufactured using premium-quality stainless steel strips and advanced TIG/ERW welding technology, these tubes offer excellent dimensional accuracy, smooth surface finishes, and dependable service life.
One of the major advantages of Stainless Steel 317L Welded Tubes is their excellent resistance to sulfuric acid, phosphoric acid, chlorides, seawater, and various corrosive process chemicals. Their low carbon content improves resistance to intergranular corrosion after welding, making them an ideal choice for fabricated equipment used in chemical processing, petrochemical plants, fertilizer industries, pulp & paper mills, marine engineering, pharmaceutical manufacturing, pollution control systems, heat exchangers, and pressure vessels. These welded tubes also offer excellent fabrication characteristics, allowing easy forming, machining, bending, and welding.
At Kamal Steels, we manufacture and supply premium-quality ASTM A249 Stainless Steel 317L Welded Tubes produced according to international quality standards. Every welded tube undergoes comprehensive quality inspections, including Mechanical Testing, Chemical Analysis, Positive Material Identification (PMI), Hydrostatic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection to ensure exceptional product quality, reliability, and complete customer satisfaction.
Kamal Steels supplies Stainless Steel 317L Welded Tubes in a comprehensive range of dimensions, schedules, surface finishes, and international specifications to meet the requirements of chemical processing, petrochemical plants, fertilizer industries, pharmaceutical manufacturing, pulp & paper mills, marine engineering, and other highly corrosive industrial applications. Our welded tubes are manufactured with stringent quality control to ensure superior weld integrity, excellent dimensional accuracy, and dependable long-term performance in aggressive service environments.
| Specifications | ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, ASME SA269 |
|---|---|
| Standard | ASTM, ASME, DIN, EN, ISO, JIS |
| Material Grade | Stainless Steel 317L (UNS S31703 / WNR 1.4438) |
| Outside Diameter | 6.35 mm to 219.10 mm (1/4" NB to 8" NB) |
| Wall Thickness | 0.5 mm to 12.7 mm (SCH 5S to SCH XXS) |
| Length | Single Random, Double Random, 6 Meter, 12 Meter & Custom Cut Lengths |
| Tube Form | Round, Square, Rectangular, Hydraulic, Instrumentation |
| Surface Finish | Annealed, Pickled, Bright Annealed (BA), Polished, Mirror Polish, Satin Finish |
| End Finish | Plain End, Beveled End, Threaded End |
| Manufacturing Process | TIG Welded, ERW Welded, Cold Drawn & Annealed |
| Testing | PMI, Hydrostatic Test, Eddy Current Test, Ultrasonic Test, Mechanical Test, Chemical Analysis |
| Certification | EN 10204 3.1 / 3.2 Mill Test Certificate (MTC) |
| Element | Composition (%) |
|---|---|
| Chromium (Cr) | 18.00 – 20.00 |
| Nickel (Ni) | 11.00 – 15.00 |
| Molybdenum (Mo) | 3.00 – 4.00 |
| Carbon (C) | 0.03 Max |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 1.00 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.030 Max |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa Minimum |
| Yield Strength | 205 MPa Minimum |
| Elongation | 40% Minimum |
| Hardness | 217 HB Max |
| Density | 8.00 g/cm³ |
| Standard | Equivalent Grade |
|---|---|
| UNS | S31703 |
| Werkstoff No. | 1.4438 |
| EN | X2CrNiMo18-15-4 |
| DIN | 1.4438 |
| JIS | SUS 317L |
Stainless Steel 317L Welded Tubes are extensively used in industries where exceptional corrosion resistance, excellent weldability, and long-term reliability are essential in aggressive chemical environments. The low carbon content minimizes the risk of intergranular corrosion after welding, while the higher molybdenum content provides outstanding resistance to pitting, crevice corrosion, chloride attack, and a wide range of corrosive chemicals. These welded tubes are engineered to deliver superior performance and extended service life in demanding industrial applications.
At Kamal Steels, every Stainless Steel 317L Welded Tube undergoes comprehensive inspection and testing to ensure compliance with ASTM, ASME, and customer specifications. Each welded tube is thoroughly tested for chemical composition, weld quality, dimensional accuracy, mechanical properties, and corrosion resistance before dispatch.
Kamal Steels follows international export packaging standards to ensure that Stainless Steel 317L Welded Tubes are delivered safely without damage during transportation and storage. Tubes are fitted with plastic end caps, securely bundled, wrapped with protective materials, and packed in fumigated wooden boxes, export-quality wooden crates, or pallets to prevent moisture, scratches, dents, and transit damage.
Each welded tube is permanently marked with the material grade, specification, size, schedule, heat number, manufacturer's identification, and batch details for complete material traceability. Every shipment is supplied with EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, packing lists, commercial invoices, certificates of compliance, and third-party inspection certificates whenever requested, ensuring complete documentation for domestic and international industrial projects.
Kamal Steels is a trusted manufacturer, supplier, stockist, and exporter of Stainless Steel 317L Welded Tubes, supplying premium-quality stainless steel tubing solutions for chemical processing, pharmaceutical manufacturing, fertilizer industries, marine engineering, petrochemical plants, pulp & paper mills, and other highly corrosive industrial applications. Manufactured according to ASTM and ASME standards, our welded tubes provide exceptional corrosion resistance, superior weldability, excellent mechanical strength, and dependable long-term performance in aggressive chemical environments.
We maintain a comprehensive inventory of ASTM A249 Stainless Steel 317L Welded Tubes in various outside diameters, wall thicknesses, schedules, surface finishes, and custom lengths to meet urgent domestic and international project requirements. Every welded tube undergoes comprehensive quality inspections, including Positive Material Identification (PMI), Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing, Eddy Current Testing, Dimensional Inspection, Surface Finish Inspection, and Visual Inspection to ensure complete compliance with international quality standards and customer specifications.
With decades of manufacturing expertise, ready stock availability, competitive pricing, certified quality, export-standard packaging, and a strong global supply network, Kamal Steels has become the preferred manufacturer and supplier of Stainless Steel 317L Welded Tubes across international markets. Our commitment to quality, technical support, prompt delivery, and complete documentation enables us to provide dependable stainless steel tubing solutions for the most demanding corrosion-resistant industrial applications worldwide.
Stainless Steel 317L Welded Tubes are low-carbon, high-molybdenum austenitic stainless steel tubes manufactured using advanced welding technology. They provide outstanding corrosion resistance and superior weldability for highly aggressive chemical environments.
Our Stainless Steel 317L Welded Tubes are manufactured according to ASTM A249, ASTM A269, ASTM A270, ASTM A554, ASME SA249, and ASME SA269 standards.
These welded tubes offer exceptional resistance to pitting, crevice corrosion, chlorides, sulfuric acid, phosphoric acid, and aggressive chemicals while providing excellent weldability and reduced susceptibility to intergranular corrosion after welding.
They are widely used in chemical processing plants, pharmaceutical industries, petrochemical facilities, pulp & paper mills, fertilizer plants, marine engineering, heat exchangers, pressure vessels, and pollution control systems.
Stainless Steel 317L contains lower carbon than SS 317, minimizing carbide precipitation during welding and improving resistance to intergranular corrosion while maintaining excellent corrosion resistance and mechanical strength.
Each tube undergoes PMI Testing, Chemical Analysis, Mechanical Testing, Hydrostatic Testing, Ultrasonic Testing (UT), Eddy Current Testing (ECT), Dimensional Inspection, Surface Finish Inspection, and Visual Inspection.
Yes. Every shipment includes EN 10204 3.1/3.2 Mill Test Certificates, inspection reports, complete material traceability, and third-party inspection certificates upon request.
Yes. Kamal Steels supplies Stainless Steel 317L Welded Tubes in various diameters, wall thicknesses, surface finishes, standard lengths, and custom-cut lengths according to customer specifications.
Yes. We export Stainless Steel 317L Welded Tubes worldwide with export-standard packaging, complete documentation, and timely international delivery.
Kamal Steels offers ASTM-compliant Stainless Steel 317L Welded Tubes with ready stock, certified quality, competitive pricing, stringent quality control, export-standard packaging, complete documentation, and dependable worldwide delivery for critical corrosion-resistant industrial applications.