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Girgaon, Mumbai - 400004
Stainless Steel 304L Welded Pipes
Trusted Global Stainless Steel 304L Welded Pipe Manufacturer & Stockist in India
Kamal Steels is a trusted Manufacturer and Stockist of Stainless Steel 304L Welded Pipes, offering premium-quality welded pipes manufactured in accordance with ASTM A312 and ASME SA312 standards. Produced from Stainless Steel 304L (UNS S30403 / WNR 1.4307), our welded pipes are engineered to provide excellent corrosion resistance, superior weldability and dependable performance across a wide range of industrial applications. The low carbon content of SS 304L minimizes carbide precipitation during welding, making it the preferred choice for fabricated piping systems where resistance to intergranular corrosion is essential.
Available in a comprehensive range of sizes, schedules, wall thicknesses, surface finishes, and custom lengths, our Stainless Steel 304L Welded Pipes are widely used in chemical processing, pharmaceutical manufacturing, food & beverage processing, dairy plants, water treatment facilities, petrochemical industries, heat exchangers and process piping systems. Every pipe is manufactured using certified raw materials, undergoes stringent quality inspections, including weld integrity and dimensional verification and is supplied with complete inspection documentation to ensure consistent quality and long-term reliability.
With extensive ready stock, project-specific manufacturing capabilities and timely delivery, Kamal Steels supports customers across India and international markets with Stainless Steel 304L Welded Pipes designed to deliver outstanding performance, excellent fabrication characteristics, and long service life in demanding operating environments.
Stainless Steel 304L Welded Pipe Specifications
| Product | Stainless Steel 304L Welded Pipe |
|---|---|
| Material Grade | SS 304L / UNS S30403 / EN 1.4307 |
| Standards | ASTM A312, ASTM A358, ASTM A778, ASME SA312 |
| Dimensions | ASME B36.19M, ASME B36.10M |
| Outside Diameter | 6 mm to 610 mm (24") |
| Nominal Bore | 1/8" NB to 24" NB |
| Wall Thickness | 0.5 mm to 50 mm |
| Schedules | SCH 5S, SCH 10S, SCH 20, SCH 40S, SCH 80S, SCH 160, XS, XXS |
| Pipe Type | ERW, EFW, Welded |
| Length | Single Random, Double Random, 6 Meter, Custom Cut Length |
| Surface Finish | Annealed & Pickled (AP), Bright Annealed (BA), 2B, No.1, No.4, Hairline, Mirror Finish |
| End Finish | Plain End, Bevel End, Threaded End |
| Testing | PMI, Hydro Test, Radiography, Eddy Current, Flattening Test, Flaring Test |
| Certification | EN 10204 3.1, Mill Test Certificate, Third Party Inspection |
Features of Stainless Steel 304L Welded Pipes
Equivalent Grades of Stainless Steel 304L Welded Pipe
| Standard | Grade |
|---|---|
| UNS | S30403 |
| EN | 1.4307 |
| DIN | X2CrNi18-9 |
| JIS | SUS 304L |
| BS | 304S11 |
| AFNOR | Z3CN18-10 |
| GOST | 03Х18Н11 |
Chemical Composition of Stainless Steel 304L Welded Pipe
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.030 Max |
| Manganese (Mn) | 2.00 Max |
| Silicon (Si) | 0.75 Max |
| Phosphorus (P) | 0.045 Max |
| Sulphur (S) | 0.030 Max |
| Chromium (Cr) | 18.00 – 20.00 |
| Nickel (Ni) | 8.00 – 12.00 |
| Nitrogen (N) | 0.10 Max |
| Iron (Fe) | Balance |
Mechanical Properties of Stainless Steel 304L Welded Pipe
| Property | Value |
|---|---|
| Density | 8.00 g/cm³ |
| Melting Range | 1400–1450°C |
| Tensile Strength | 485 MPa (Min) |
| Yield Strength | 170 MPa (Min) |
| Elongation | 40% (Min) |
| Hardness | 92 HRB Max |
Applications of Stainless Steel 304L Welded Pipes
Frequently Asked Questions
Stainless Steel 304L Welded Pipe is a low-carbon austenitic stainless steel pipe manufactured by welding stainless steel coils or plates. Its reduced carbon content improves weldability and minimizes carbide precipitation, making it suitable for welded structures and corrosive environments.
The primary difference is carbon content. Stainless Steel 304L contains a maximum of 0.03% carbon, while 304 contains up to 0.08%. The lower carbon content of 304L provides better resistance to intergranular corrosion after welding and often eliminates the need for post-weld heat treatment.
Stainless Steel 304L Welded Pipes are commonly manufactured according to ASTM A312, ASTM A358, ASTM A778, ASME SA312, ASME B36.19M, and ASME B36.10M standards.
SS 304L Welded Pipes are available from 1/8" NB to 24" NB in various wall thicknesses and schedules including SCH 5S, SCH 10S, SCH 40S, SCH 80S, SCH 160, XS, and XXS. Custom sizes and cut lengths are also available.
These pipes offer excellent corrosion resistance, superior weldability, good mechanical strength, easy fabrication, hygienic surface finish, low maintenance, and long service life, making them suitable for demanding industrial applications.
SS 304L Welded Pipes are widely used in chemical processing, pharmaceutical plants, food and beverage processing, dairy industries, water treatment, petrochemical facilities, heat exchangers, marine applications, and structural fabrication.
Quality inspections include Hydrostatic Testing, PMI (Positive Material Identification), Radiographic Testing, Eddy Current Testing, Flattening Test, Flaring Test, Visual Inspection, and Dimensional Verification to ensure compliance with international standards.
Yes. Stainless Steel 304L Welded Pipes are supplied with EN 10204 3.1 Mill Test Certificates (MTC). Third-party inspection certificates are also available upon customer request.
Yes. We supply customized outside diameters, wall thicknesses, lengths, schedules, end preparations, and surface finishes to meet project-specific requirements.
Kamal Steels manufactures premium-quality Stainless Steel 304L Welded Pipes using certified raw materials and advanced production processes. We provide competitive pricing, strict quality control, fast delivery, complete documentation, and reliable export services to customers worldwide.