Stainless Steel 321 Welded Pipes
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 Welded Pipe, 321 SS Welded Pipe, ASTM A312/SA312, Stainless Steel Welded Pipe
Material: SS321, AISI 321, SUS321, INOX 321, Stainless Steel 321, material 1.4541
Brand: Siddhagiri Metals and Tubes
Manufacturer: Siddhagiri Metals and Tubes
AISI 321 Stainless Steel Welded Pipe Supplier · ASTM A312 · Steel Pipe
Siddhagiri Metals and Tubes is a supplier and stockist of AISI 321 Welded Pipes in accordance with ANSI B36.19M and ANSI B36.10 dimension standards. We specialise in manufacturing and stocking TP321 pipes available upto 36" inches in size. Contact us for best price.
Welded Pipes are of two types ERW and EFW. A process for producing welded pipe is Electric Resistance Welding (ERW) also known as Contact Welding. Processing of Electric Fusion Welding, also called Continuous Welding begins as coiled steel with appropriate thickness, width and weight is made. 321 Welded Pipes are available in a wide range of sizes and properties. Due to the weld seam, lower operating pressures are stated in accordance with ASME compared to seamless pipes. In general Stainless Steel welded pipe possess tighter dimensional tolerances than seamless pipes and are less costly if produced in same quantities. 321 SS Welded Pipe sizes range from 1/8" to 48" inches and the thickness of the pipes are as follows: 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. The Stainless Steel pipe is manufactured and finished according to dimension standards such as ANSI B36.10 and ANSI B36.19.
Siddhagiri Metals and Tubes is a leading supplier of 321 welded pipes providing an extensive selection of all grades and dimensions to the oil and gas, petrochemical, chemical and power industries. We work closely together with certified pipe manufacturers from around the world and have a huge range of different welded pipes constantly on stock ranging from Electric Resistance Welded (ERW) Pipes, Fusion Welded (EFW) Pipes to Double Submerged Arc Welded (DSAW) Pipes. We have a huge inventory of Stainless Steel Welded pipes in different sizes and dimensions ranging from 1/8" to 16" inches in size and 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 in thickness. Siddhagiri Metals and Tubes is one of the major manufacturers of welded 321 pipes for applications in oil and gas, LNG, Petro-chemical, shipbuilding, desalination, water treatment and energy industries.
We are engaged in offering wide range of ASTM A312/SA312 welded pipes in Stainless Steel, Duplex Steel, Nickel Alloy, Copper and Alloy Steel material. We also specialize in supplying SS 321 Welded Pipes. We have a huge stock of piping materials with applications in industries such as Medicine, Chemical, Oil and Gas etc. We have an inventory of pipes of Indian, European and Japanese origin. Our comapany has bagged an ISO 9001:2015 certification for the excellence in the quality of our products.
All our 321SS Pipes conform to international standards and are manufactured according to ASTM, ASME, DIN, ANSI, EN, WERKSTOFFE, JIS, BS standards. Each piece of pipe is fully tested by professionals according to international standards. Few of the major brands we represent are Nippon, Sumitomo, Outokumpu, Sandvik, etc. We are Saudi ARAMCO approved vendors of Stainless Steel 321 pipes. We export in many major countries which include UAE, Saudi Arabia, Russia, Iran, Indonesia, Chile, Germany, Australia, USA, Europe, Brazil, South Africa and many more.
- Pipe Specification: material 1.4541, EN 1.4541, UNS S32100, JIS SUS 321, BS 321S31, SS 2337, ASTM A312 UNS S32100
- Dimension Standard: ANSI B36.19, 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: 321 Welded Pipe, 321 EFW Pipes, 321 ERW Pipes
- Form: 321 Round Pipes, 321 Square Pipes, 321 Rectangular Pipe
- Length: Single Random, Double Random & Cut Length
- End: Plain End, Beveled End, Threaded
- End Protection: Plastic CapsOutside Finish: 2B, No.1, No.4, No.8 Mirror Finish
- Delivery Condition: 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 Welded Pipe Sizes in Stock
|Pipe Form||Size Range||Thickness||Dimension Standards|
|321SS Welded Pipe, 321SS ERW Pipe, 321SS EFW Pipes||1/8" to 48" 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 B36.19M|
Forms of INOX 321 in Stock
SS321 Square Pipe
Stainless Steel Square Pipes available in ASTM A312 UNS S32100 SCH 5 to XXS
SS321 Round Pipe
Stainless Steel Round Pipes available in sizes 1/4 to 16" in ASTM A312 UNS S32100
SS321 Rectangular Pipe
Stainless Steel Rectangular Pipes available in ASTM A312/SA312
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
(% in 50mm)
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 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.
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.
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.