Stainless Steel 321 is a well-known austenitic stainless steel grade with a very particular composition, namely, a stabilization of chromium and nickel with titanium. This particular expression of properties provides excellent strength and high durability to the pipes of Stainless Steel 321 to face corrosive and reducing atmospheres with efficiency. A M Industries is among the most leading manufacturers, suppliers, exporters, and stockists of Stainless Steel 321 Pipes.

Close-up of Stainless Steel 321 Pipes showing smooth, seamless structure.

These pipes operate within the temperature range of 538°C to 870°C, allowing the minimum tensile strength of 515 MPa and minimum yield strength of 205 MPa. They have an elongation capacity of 40% maximum and a maximum hardness of 95 HRB on the Rockwell scale. Their fabrication and welding properties are excellent, following standard welding procedures easily.

Stainless Steel 321 Pipes Manufacturers, Stainless Steel 321 Pipes Suppliers, Stainless Steel 321 Pipes Stockists, Stainless Steel 321 Pipes Exporters

Manufacturing, supplying, exporting, and stockist of ASTM A312 TP321 Seamless pipes make sure that these pipes are seamless, manufactured by extruding hot steel billets, thereby making them devoid of any seam or weld.This makes them very much capable of withstanding loads under different conditions. The density of 321 stainless steel seamless tubes is 8.27 g/cm3, and hence these have excellent strength.

Stainless Steel 321 Pipes Manufacturers in India, Stainless Steel 321 Pipes Suppliers in India, Stainless Steel 321 Pipes Stockists in India, Stainless Steel 321 Pipes Exporters in India

They can be profiled into square, round and rectangular section forms. This makes them fit for a wide range of applications like heat exchanger parts, furnace equipment, expansion joints, bellows and aircraft exhaust manifolds. Able to be either hot or cold rolled these tubes are typically anneal around 1605°F and water-quenching at this temperature increases their ability against corrosion.

UNS S32100, most generally known as Stainless Steel 321, is a titanium-stabilized alloy. It shows excellent performance at high temperature with regards to opposition against intergranular corrosion. ASTM A312 TP321 Welded Pipes are made for operating under such harsh conditions and temperature, exactly where other austenitic grades fail due to chromium carbide precipitation between 800°F - 1500°F. These pipes also offer better creep strength and stress rupture properties and maintain toughness even in low-temperature settings.

Stainless Steel 321 Pipes Manufacturers in Mumbai, Stainless Steel 321 Pipes Suppliers in Mumbai, Stainless Steel 321 Pipes Stockists in Mumbai, Stainless Steel 321 Pipes Exporters in Mumbai

It is not possible to harden SS 321 ERW Pipes by heat treatment, cold working does wonders in improving their surface finish and dimensional accuracy. Basically, these austenitic stainless steels are very ductile and easily formed. They weld seamlessly, too, with conventional techniques. Contact us to know more or request a quote about our products.

Stainless Steel 321 Pipes Specifications

Trade Name

Stainless Steel 321 Pipe & tube

Stainless Steel 321 Seamless Pipe (OD)

21.3 - 660mm ( Inch 1/2” – 26”)

SS 321 SAW

16" - 100" NB

ASTM A312 TP 321 ERW and HFW

1/2” NB – 24” NB

321 Stainless Steel LSAW / DSAW

16’OD TO 54" OD (8 MM TO 50 MM THK)

Additional Services and Facility

Polishing, Laser/ Water Jet Cutting, Threading, Sawing, Beveling, Cutting, Tapping

Material Test Certificate (MTC) provided by Stainless Steel 321 Pipe suppliers

ISO 9001:2005, EIL, PED, Ultrasonic Testing (UT), Radiographic Testing (RT), NDE, ISO 14001:2015, IBR, EN 10204 3.1

Equivalent Standards

AWWA, EN, DIN, GB, SAE, AISI, SS, BS, JIS, ASTM, KS, ANSI, IS, NFA, UNI, GOST, CSA, API, ISO

ASME SA 312 Grade 321 Pipe end

BLE -Bevel large end, BSE -Bevel small end, BBE -Bevel both ends, TOE -Treaded One End, PBE -Plain Both Ends, BE -Beveled end, BOE-Beveled One End, TBE -Treaded Both Ends, POE -Plain One End

1.4541 Stainless Steel Pipe Length

DRL, 20FT, 40FT, SRL, 6000mm, 2000mm, 12000mm, Double Random Length (DRL), 3000mm, Single Random Length (SRL), Custom Length

321 Wall Thickness

SCH160, SCH-10S, SCH-80, SCH-80S, SCH-XS, SCH-5, SCH-STD, SCH-XXS, SCH-10, SCH-40, SCH-5S, SCH-40S

Marking of Stainless Steel 321 Pipe suppliers

Specification of Stainless Steel 321 Pipe
Material Grade
Nominal Pipe Sizes (NPS)
Wall Thickness or Schedule No.
Manufacturing Process (Seamless/ EFW/ ERW/ Welded)
Heat Number
Dealer/ Supplier or Manufacturer’s Name or Custom Logo - as required

Stainless Steel 321 Seamless Pipe Marking Sample: ASME B36.19/ B36.19m ASTM A312 TP321 12" NB SCH 40S PIPE SEAMLESS HEAT NO. XXXX

Surface Finish & Delivery Condition

Mirror, 4K, Annealed & Pickled, Polish, HL, NO.4, NO.1, Bright Annealed, 8K, Polished, 2B, Cold Drawn, BA

Different methods used by Stainless Steel 321 Pipe manufacturers

Welded, 100% X Ray/ Gamma Ray Welded, Electro Fusion Seam Welded (EFSW), Cold Drawn Seamless (CDS), Longitudinally Submerged Arc Welded (LSAW), Electric Resistance Welded (ERW), CDW, Horizontal Submerged Arc Welded (HSAW), Fabricated, Extrusion, Hot Finish Seamless (HFS), Seamless, Submerged Arc Welded (SAW)

Origin of SS 321 Pipe material

Korean, American, Indian, European, Asian, Ukraine, Russian, Chinese, Latin-American, UK, Gulf, Japanese, Japan, USA, Africa

Certificate

NACE, EN-10204:3.2, IBR, SSC, HIC, EN-10204:3.1, Sour-Service

Dual certified supplier

Dual certified SS 321 Pipe suppliers in India, accordance to certify ASTM A312 TP321 and ASME SA 312 TP321 American specifications

Test

Surface Roughness Test, TM0177, Hydro test, HIC- Hydrogen-induced Cracking, Chemical, Tensile, Flux Leakage examination or Magnetic Flaw detection, Fine Grain, Radiography, IGC- Intergranular Corrosion Test, Hardness, Hardness Test, Macro, Eddy current, TM0284, Metallurgical & Stereo Microscopy, Ultrasonic Test, Stress , Positive Material Identification (PMI), Salt Spray Test to test Phosphating, Impact, Creep, Non Destructive Testing , NACE MR0175, Mechanical, Ferrite, Charpy V-Notch Test, Bend TestBend test / Guided Bend, Ultrasonic, SSC- Sulfide Stress Corrosion Cracking, H2 SERVICE, Straightness, Charpy V Impact Test, Micro, Burst Test, IBR

STANDARD	WERKSTOFF NR.	UNS	JIS	EN
SS 321	1.4541	S32100	SUS 321	X6CrNiTi18-10

Grade	C	Mn	Si	P	S	Cr	N	Ni	Ti
SS 321	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 - 19.00	0.10 max	9.00 - 12.00	5(C+N) – 0.70 max

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1457 °C (2650 °F)	Psi – 75000 , MPa – 515	Psi – 30000 , MPa – 205	35 %

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