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Quality Low Carbon 304L 316L 317L 321L Stainless Steel Welding Pipe Corrosion Resistance factory
Quality Low Carbon 304L 316L 317L 321L Stainless Steel Welding Pipe Corrosion Resistance factory

Low Carbon 304L 316L 317L 321L Stainless Steel Welding Pipe Corrosion Resistance

Basic Properties
Place of Origin: MADE IN CHAINA
Brand Name: Baosteel，TISCO
Certification: EN 10204 Type 3.1 / 3.2 available
Model Number: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507
Trading Properties
Minimum Order Quantity: 100kg
Price: Negotiable (Request a Quote)
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Ability: 10000tons
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Molybdenum Alloy Stainless Steel Pipe

Stainless Steel Pipe Chloride Resistance

Low Carbon Stainless Steel Welding Pipe
Product Summary
The Low-Carbon Stainless Steel Pipe is specifically designed for welding applications where resistance to intergranular corrosion is critical. With a maximum carbon content of 0.03% (compared to 0.08% in standard grades), this pipe minimizes the formation of chromium carbides during welding, ...

Product Details

Highlight:

Low Carbon Stainless Steel Welding Pipe

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321L Stainless Steel Welding Pipe

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317L Stainless Steel Welding Pipe
Country Of Origin: MADE IN CHAINA
Brand: Baosteel，TISCO
Certifications: ISO/EN 10204 Type 3.1 / 3.2 Available
Grade: 201 / 202 / 301 / 302 / 303 / 304 / 304L / 305 / 309S / 310S / 316 / 316L / 317 / 317L / 321 / 347 / 409L / 410 / 420 / 430 / 440C / 2205 / 2507 / 630 (17-4PH)
MOQ: 100kg
Price: Negotiable (Request A Quote)
Packaging: Wooden Case / Wooden Pallet / Steel Frame / Carton / Woven Bag
Delivery Time: 15-25days
Payment Terms: T/T，D/P，D/A，Western Union，PayPal
Supply Capacity: 10000tons
Product Description

The Low-Carbon Stainless Steel Pipe is specifically designed for welding applications where resistance to intergranular corrosion is critical. With a maximum carbon content of 0.03% (compared to 0.08% in standard grades), this pipe minimizes the formation of chromium carbides during welding, preventing sensitization and preserving corrosion resistance in the heat-affected zone (HAZ). Manufactured as seamless or welded and subsequently annealed, it offers excellent weldability, consistent mechanical properties, and long-term reliability in corrosive service.

Product Specifications
Parameter Details
Standards ASTM A312, A269, A213; ASME SA312; EN 10216-5
Available Grades 304L, 316L, 317L, 321L
Outer Diameter 6 mm – 610 mm (1/8″ – 24″ NPS)
Wall Thickness Schedule 5S, 10S, 40S, 80S, or custom
Length Fixed lengths 3m / 6m, or random lengths upon request
Manufacturing Process Seamless – Cold drawn / Hot rolled
Surface Finish Annealed, pickled, passivated
End Finish Plain ends, beveled ends (prepared for welding)
Chemical Composition (Typical Values, %)
Grade C ≤ Si ≤ Mn ≤ P ≤ S ≤ Cr Ni Mo
304L 0.03 0.75 2.00 0.045 0.030 18.0-20.0 8.0-12.0 –
316L 0.03 0.75 2.00 0.045 0.030 16.0-18.0 10.0-14.0 2.0-3.0
317L 0.03 0.75 2.00 0.045 0.030 18.0-20.0 11.0-15.0 3.0-4.0

Comparison – Standard grades (304 / 316): C ≤ 0.08%. Low carbon (L) grades significantly reduce carbide precipitation risk.

Mechanical Properties (at Room Temperature)
Grade Tensile Strength (MPa) min Yield Strength (MPa) min Elongation (%) min Hardness (HB) max
304L 485 170 40 201
316L 485 170 40 217
317L 515 205 40 217

Tested in accordance with ASTM E8 / E8M.

Weldability Characteristics
Property Low-Carbon Grades (304L / 316L / 317L)
Sensitization Risk Very low – minimal chromium carbide precipitation
Post-Weld Heat Treatment Not required for most corrosive services
Recommended Welding Processes GTAW (TIG), SMAW (stick), GMAW (MIG), SAW
Filler Metal Recommendation Matching L-grade or lower carbon filler (e.g., ER308L / ER316L)
Heat-Affected Zone (HAZ) Integrity Excellent – retains corrosion resistance
Thin Wall Welding Excellent – low risk of burn-through and distortion
Key Features for Welding Applications

  • Low Carbon Content (≤0.03%) – Precribes sensitization and intergranular corrosion after welding

  • No Post-Weld Annealing Required – Reduces fabrication time and cost

  • Excellent HAZ Corrosion Resistance – Maintains performance in welded condition

  • Good Weldability – Compatible with all standard arc welding processes

  • Consistent Mechanical Properties – Uniform strength across welded joints

  • Molybdenum Grades Available – 316L / 317L for enhanced chloride and acid resistance

  • Beveled End Preparation – Available ready for butt welding

Applications

  • Chemical Processing Plants – Piping systems requiring extensive field welding

  • Pharmaceutical and Biotech – Sanitary welded tubing and fittings

  • Food and Beverage – Dairy, brewery, and beverage process lines

  • Oil and Gas – Offshore and onshore welded flow lines

  • Water Treatment – Reverse osmosis and desalination welded systems

  • Heat Exchangers – Tube-to-tubesheet welding

  • Semiconductor Manufacturing – Ultra-high-purity gas lines (316L EP grade)

  • Structural Welded Assemblies – Handrails, platforms, and support structures

  • Shipbuilding – Welded piping systems in corrosive environments

Recommended Welding Practices
Parameter Recommendation
Preheat Not required for thicknesses ≤ 25 mm
Interpass Temperature ≤ 150°C (300°F)
Shielding Gas (GTAW) Argon (100%) or Ar + 2-5% H₂
Back Purging Recommended for sanitary and high-purity applications
Post-Weld Clean Pickling and passivation to restore corrosion resistance
Contact Us

For inquiries, technical datasheets, or custom sizes, please contact our sales team.

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