Stainless Steel 321 Welded Pipe


Arrow Piping Solutions is a trusted manufacturer and supplier of Stainless Steel 321 Welded Pipe. We provide high-quality pipes with excellent strength, durability, and resistance to high temperatures. Stainless Steel 321 is a stabilized austenitic steel ideal for applications involving prolonged exposure to elevated temperatures. Its exceptional corrosion and oxidation resistance make it suitable for a wide range of industrial applications.


Stainless Steel 321 Welded Pipe is composed of carbon, manganese, silicon, phosphorus, sulfur, chromium (minimum 17%), nickel (minimum 9%), and titanium, ensuring excellent mechanical and anti-corrosive properties. It offers a tensile strength of 515 MPa and yield strength of 205 MPa. Available in sizes from 1″ NB to 16″ NB and wall thickness ranging from Schedule 10 to Schedule 160, these pipes can be supplied in lengths from 1 meter to 12.5 meters as per customer needs.

Stainless-Steel-321-Welded-Pipes

Features of Stainless Steel 321 Welded Pipe


  • High-Temperature Strength: Performs reliably up to 900°C, ideal for extreme heat applications.
  • Good Weldability: Easily weldable using standard techniques, reducing fabrication time and cost.
  • Superior Creep Resistance: Withstands long-term exposure to heat without deformation.
  • Durability: Strong, tough, and resistant to scaling and rust.
  • Low Maintenance: Resists corrosion and oxidation, minimizing maintenance costs.

Applications of SS 321 Welded Pipe

  • Chemical Industry
  • Marine Sector
  • Petrochemical Industry
  • Pharmaceuticals
  • Power Plants
  • Heat Exchangers
  • Furnace Components
  • Food Processing Units
  • Aerospace Industry
  • Exhaust Systems

Most Common Types

  • SS 321 Welded Pipe
  • 321 SS Round Pipe
  • SS 321 Welded Square Pipe
  • SS 321 Polished Pipe
  • SS 321 Schedule 40 Seamless Pipe
  • 321 Stainless Steel Thin Wall Pipe
  • Stainless Steel 321 Custom Pipe
  • Stainless Steel 321 Cold Drawn Seamless Pipe

Stainless Steel 321 Welded Pipe Specifications

SpecificationsASTM A312, ASME SA312, ASTM A213, ASTM A249, ASTM A269, ASTM A358
GradeSS 321
Size1/8″ NB – 36″ NB
ScheduleSCH 5, SCH 10, SCH 20, SCH 40, SCH 80, SCH 160, SCH XXS
TypeWelded (ERW, EFW)
FormRound, Square, Rectangular, Coil, Hydraulic
LengthSingle, Double Random & Custom Cut
EndPlain End, Beveled End, Threaded
Surface Finish2B, BA, No. 1, No. 4, Mirror, Polished
PackingLoose, Bundled, Wooden Box, Plastic Wraps
MarkingGrade, Size, Heat No., Manufacturing Standard, Batch No., Manufacturer’s Name

Packing & Marking

Our SS 321 Welded Pipes are packaged securely in loose form, bundles, plastic cloth wraps, wooden pallets, or wooden boxes with plastic end caps and beveled protectors. Markings include product code, grade, size, weight, quantity, and heat number for easy identification during transportation and storage.

Quality Checks & Certifications

  • Product Analysis, Tension & Hardness Tests
  • Weld Decay, Intergranular Corrosion Testing
  • NABL-Approved Lab Certificates
  • Manufacturer Test Certificates (EN 10204 3.1 / 3.2)
  • Third-Party Inspection: SGS, TUV, Lloyd’s
  • Compliance with NACE 0175

Looking for Fastest Delivery in Mumbai?

Searching for ready stock of Stainless Steel 321 Welded Pipe? Contact Arrow Piping Solutions for the best prices and immediate delivery.

Phone: +91-80973-20872
Email: inquiry@arrowpiping.co.in