ISO 9001:2015 Certified · CRISIL Rated · PED Certified · Trusted Global Exporter
321 SS Seamless Pipe with ANSI B36.19M and ANSI B36.10

Siddhagiri Metals and Tubes supplies AISI 321 Stainless Steel Pipes in many forms, manufactured as per ASTM A312 specification
Other Names: ASTM A312 UNS S32100, Steel Pipe, 321 Stainless Steel Pipe, 321 Steel Pipe, TP321, 321 Pipe, 321 SS Seamless Pipe, ASTM A312
Material: SS321, AISI 321, SUS321, INOX 321, Stainless Steel 321, EN 1.4541
Brand: Siddhagiri Metals and Tubes
Manufacturer: Siddhagiri Metals and Tubes
Rating: 4.3/5 based on 85 customer reviews

AISI 321 Stainless Steel Seamless Pipe Supplier · ASTM A312 Pipe Stockist · Material 1.4541 Pipes

Siddhagiri Metals and Tubes is a supplier and stockist of AISI 321 Seamless Pipes in accordance with ANSI B36.19M and ANSI B36.10 dimension standards. We specialise in manufacturing and stocking TP 321 pipes available upto 36" inches in size. Contact us for best price.

A pipe without a seam or weld is known as Seamless Pipe. 321 Seamless Pipes can withstand high mechanical stress and high pressure can work in high temperatures and corrosive environments. Stainless Steel Seamless Pipe is formed by drawing a solid metal billet over a piercing rod to create a hollow tube. Seamless Pipe is then processed and finished as per dimension standard ANSI B36.10 and ANSI B36.19 and B36.19M in different wall thickness and sizes ranging from SCH 5S to SCH XXS. 321 Seamless Pipes have varied applications in the Oil and gas, Chemical, Pharmaceutical, Fertilizer, Agro-Chemical, Aerospace, Desalination, Food and Beverage, Sugar, Distillery, Power Generation, Cement, Petroleum Refinery, mechanical and structural, food processing, etc.

Siddhagiri Metals and Tubes supplies a full range of ASTM A312 pipe (TP321) schedules from Sch 5 thru Double Extra Heavy. Most SS 321 pipes are available in 4" SCH 40, 6" SCH 40, 4" SCH 120, 6" SCH 120 in single random, double random and cut length sections. All 321 Pipes can be cut to your exact requirements. We also manufacture custom pipes for specific needs of the client, which are usually produced in 2-4 weeks.

We stock a complete range of alloy and Steel Pipes, to facilitate our client's needs at the most competitive prices. We also specialise in ERW and EFW types of welded pipes. With over 900 sizes, we have a huge inventory for any piping application. Our range of Stainless Steel Pipes include seamless (smls) and welded pipes in forms round, rectangle and square in size 15 NB UP TO 1200 NB and schedule SCH 5S, 10S, 10, 20, 40S, 40, STD, 60, 80S, 80, XS, 100, 120, 140, 160 & XXS of Indian, European and Japenese origin.

These Stainless Steel Pipes conform to international standards and guidelines and are manufactured as per ASTM, ASME, DIN, ANSI, WERKSTOFFE, EN, JIS, BS standards. The manufacturing of the 321 SS seamless pipes is tightly regulated and each piece is fully tested to international standards. We are Saudi ARAMCO approved suppliers of AISI 321 Seamless Pipes and supply 321 pipes of renowned brands like Nippon, Sumitomo, Outokumpu, Sandvik etc. We have regular exports of Seamless (smls) Pipes in Australia, Europe, Russia, UAE, Saudi Arabia, Qatar, Iran, Indonesia, Malaysia, South Africa, Congo, Brazil, Chile, USA, Canada, Japan, Uk, etc.

  • Pipe Specification: Material 1.4541, EN 1.4541, UNS S32100, JIS SUS 321, BS 321S31, SS 2337, ASTM A312 UNS S32100, TP 321 Pipes
  • Dimension Standard: ANSI B36.19M, ANSI B36.10
  • Outside Diameter (OD): 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB available Ex-stock, OD Size pipes available Ex-stock
  • Thickness Range: 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS
  • Type: Seamless Pipes
  • Form: Round Pipes, Square Pipes, Rectangular Pipe
  • Length: Single Random, Double Random & Cut Length
  • End: Plain End, Beveled End, Threaded
  • End Protection: Plastic Caps
  • Outside Finish: 2B, No.1, No.4, No.8 Mirror Finish
  • Finish: Annealed and Pickled, Polished, Bright Annealed, Cold Drawn
  • External Coating: 3LPE / 3LPP/ FBE/ DFBE/ PP
  • Origin: Indian Origin, European Origin, Japanese Origin
  • Testing and Documents: Mill Test Certificates, EN 10204 3.1, Chemical Reports, Mechanical Reports, Destructive Test Report, Non Destructive Test Reports, PMI Test Reports, Visual Inspection Reports, Third Party Inspection Reports, NABL Approved Lab Reports
  • Packing: Packed in Wooden Boxes, Bubble wraps, Steel Strips Bundled, or as per Customers Requests

AISI 321 Seamless Pipe Sizes in Stock

Pipe Form Size Range Thickness Dimension Standards
321SS Seamless Pipe 1/8" to 16" inches Sch 5, Sch 5s, Sch 10, Sch 10s, Sch 20, Sch 30, Sch 40s, Sch 40, Sch STD, Sch 60, Sch 80s, Sch 100, Sch 120, Sch XS, Sch XXS, Sch 160 ANSI B36.10, ANSI B36.19, ANSI B36.19M

Forms of 321 Stainless Steel in Stock

In Stock 321 Square Pipe Manufacturer

SS321 Square Pipe

321 Stainless Steel Square Pipes ASTM A312 available from SCH 5 to XXS

In Stock 321 Round Pipe Manufacturer

SS321 Round Pipe

321 Stainless Steel Round Pipes ASTM A312 (TP321) in sizes 1/4 to 16"

In Stock  321 Rectangular Pipe Manufacturer

SS321 Rectangular Pipe

321 Stainless Steel Rectangular Pipes available in ANSI B36.10, ANSI B36.19, ANSI B36.19M standards

  • Chemical Properties
  • Mechanical Properties
  • Physical Properties
  • C. Si Mn P S Cr Ni N Ti
    MIN - - - - - 17.000 9.000 - -
    MAX 0.080 0.750 2.000 0.045 0.030 19.000 12.000 0.100 0.700
  • Yield Strength
    0.2% Proof
    (MPa)
    Tensile strength
    (MPa)
    Elongation
    (% in 50mm)
    Hardness
    (HRB)
    MIN 205 515 40.00  
    MAX       95
  • Density lb/in³ 0.285
    kg/dm³ 7.9
    Modulus of Elasticity psi 29 x 10-6
    GPa 200
    Thermal Conductivity Btu/ft hr°F 8.7
    W/m°C 15
    Heat Capacity Btu/lb°F 0.12
    J/kg°C 500
    Electrical Resistivity Ω-inch 27.6 x 10-6
    µΩm 0.73
    Poissons ratio   0.3

Properties of AISI 321 Stainless Steel

321 SS Cold Forming

Type 321 is easliy cold formed due to its ductile nature.

321 SS Hot Forming

Type 321 can be readily formed and drawn.

321 SS Machining

Type 321 is less machineable than Type 410 Stainless Steel.

321 SS Welding

Type 321 is easily weldable by all standard techniques. No post weld treatment is required.

321 SS Heat Treatment

Type 321 is non-hardenable by heat treatment. 321 is annealed by heating it to 1750 – 2050 °F (954 – 1121°C), then water quench or air cool.

Services We Offer

Documentation

Documentation is a very important part of the products we supply, and we work continuously to enhance the efficiency of the document-handling process without compromising quality of the product. Documents provided along with the shipment include Certificate of Origin, Material Test Certificate as per EN 10204 3.1 and 10204 3.2, NACE MR10103 and NACE MR0175 certified Test Certificates.

Quality Assurance

Stainless Steel Pipes are manufactured and controlled to international standards such as ASTM, ASME, BS, MSS, EN, DIN or WERKSTOFFE. Our products undergo stringent quality tests before they are dispatched.

Material Testing

PMI Testing, Ultrasonic Test, Mechanical Testing, Spectro Tests for Chemical Analysis of the grade, Flaring Test, IGC, etc. are some of the tests conducted at our facility. We welcome stage wise inspection from any of your representative or third party inspection agencies.

Packing and Delivery

The product is wrapped and packed in wooden crates or carton boxes. Our primary goal is to deliver quality products in time, no matter where the client is located.

Let Us Know What YOU Need

We Cherish All Your Requirements