Stainless Steel 321/321H Pipes & Tubes

Stainless Steel 321 Pipes Exporter, SS ASTM A312 TP321H Seamless Pipes, ASTM A358 Stainless Steel 321H EFW Pipe Supplier, ASTM A213 Stainless Steel 321 Tubes, SS 321 Tubing , SS 321 Welded Tube Manufacturer in Europe.

SS TP321H Seamless Round Tubing, UNS S32109 Hot Finished Tubes Dealers in India, SS 321 Electropolished Pipes and Tubes Distributors, SS 321 Rectangular Hollow Pipes, Type TP321 SS Welded Square Pipe, Stainless Steel 321H Oval Tubes, SS 321/321H Pipes, UNS S32100 Stainless Steel Polished Pipes Stockists in UK .

Kalpataru Piping Solutions stands as a leading supplier and stockist of high-quality industrial steel, specializing in SS 321/321H Pipes & Tubes. We are dedicated to providing products crafted from premium raw materials and adhering to stringent international standards. Our stainless steel 321 products, including both seamless and welded pipes, undergo rigorous testing and inspection before delivery to ensure they meet the highest quality standards. Whether you need standard sizes or custom forms, we cater to a wide range of specifications to meet diverse industrial needs.

Our stainless steel 321 pipes and tubes are renowned for their superior physical and mechanical properties, including elongation, density, thermal conductivity, and tensile strength. These attributes make SS 321 and SS 321H pipes highly suitable for various demanding applications. We offer these products in a range of types such as seamless, welded, round, square, and rectangular, with options for polished and electro-polished finishes. The precise chemical composition, including carbon, manganese, silicon, phosphorus, sulfur, chromium, and titanium, ensures the durability and reliability of our pipes.

The versatility of SS 321/321H Pipes & Tubes makes them ideal for use in sectors such as pharmaceuticals, seawater equipment, chemical processing, gas processing, petrochemicals, power generation, and more. Their ability to withstand high temperatures and resist carbide precipitation due to the titanium content enhances their suitability for applications like heat exchangers, condensers, and aerospace equipment. The superior corrosion resistance and structural integrity of these tubes make them an excellent choice for both industrial and specialized uses.

To guarantee the performance of our SS 321/321H pipes, we conduct comprehensive testing, including flaring, mechanical, chemical, hardness, hydrostatic, macro, micro, radiography, PMI, and flattening tests. These evaluations confirm that our products meet the rigorous demands of various industries. For further information or to receive a quotation, please contact us.

Stainless Steel 321/321h Pipes and Tubes Specification

Specifications : ASTM A/ASME SA213/A249/A269/A312/A358 CL. I to V ASTM A789/A790
Dimensions : ASTM, ASME and API
321 Pipes & Tubes : 1/2″ NB – 24″ NB
ERW 321 Pipes & Tubes : 1/2″ NB – 24″ NB
EFW 321 Pipes & Tubes : 6″ NB – 100″ NB
Tubing Size : 1/8″NB TO 30″NB IN
Specialized in : Large Diameter Size
Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Type : Seamless / ERW / Welded / Fabricated / LSAW Pipes
Form : Round, Square, Rectangular, Hydraulic Etc
Length : Single Random, Double Random & Cut Length.
End : Plain End, Beveled End, Treaded

Stainless Steel 321/321h Pipes and Tubes Chemical Composition

% Cr Ni C Si Mn P S N Ti Fe
321 min:17.0
max:19.0
min: 9.0
max:12.0
max:0.08 max:0.75 max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance
321H min:17.0
max:19.0
min: 9.0
max:12.0
min:0.04
max:0.10
min:18.0
max:20.0
max:2.0 max:0.045 max:0.03 max:0.10 min:5*(C+N)
max:0.70
Balance

Mechanical properties of Stainless Steel 321/321h Pipes & Tubes

Grade Tensile Strength
ksi (min.)
Yield Strength 0.2%
Offset ksi (min.)
Elongation –
% in
50 mm (min.)
Hardness
(Brinell) MAX
321/321H 75 30 40 217

321/321h Pipes and Tubes Physical Properties

Denstiy
lbm/in3
Coefficient of
Thermal Expansion (min/in)-°F
Thermal Conductivity BTU/hr-ft-°F Specific Heat BTU/lbm -°F Modules of Elasticity (annealed)2-psi
at 68 °F at 68 – 212°F at 68 – 1832°F at 200°F at 32 – 212°F in tension (E)
0.286 9.2 20.5 9.3 0.12 28 x 106

Equivalent Grades of 321/321h Pipes & Tubes

STANDARD UNS WNR. EN JIS
SS 321 S32100 1.4541 X6CrNiTi18-10 SUS 321
SS 321H S32109 1.4878 X12CrNiTi18-9 SUS 321H

Types Of Stainless Steel 321 Pipes & Tubes

  •   ASTM A312 TP321 Stainless Steel Seamless Pipes
  •   ASTM A213 TP321 Stainless Steel Seamless Tubes
  •   ASTM A312 TP321 Stainless Steel Welded Pipes
  •   ASTM A249 TP321 Stainless Steel Welded Tubes
  •   SS 321 Seamless Pipes
  •   SS 321 ERW Pipes
  •   SS 321 EFW Pipes
  •   SS 321 Welded Pipes
  •   SS 321 Rectangular Pipes
  •   SS 321 Seamless Tubes
  •   SS 321 ERW Tubes
  •   SS 321 EFW Tubes
  •   SS 321 Welded Tubes
  •   SS 321 Rectangular Tubes

SS 321/321H Pipes & Tubes Application Industries

Petrochemical Industry
Oil and Gas Industry
Chemical Industry
Power Plant Industry
Energy Industry
Pharmaceuticals Industry
Pulp & Paper Industry
Food Processing Industry
Aerospace Industry
Refining Industry

We Export To Stainless Steel 321/321h Pipes and Tubes

New Zealand, Ukraine, Brazil, Azerbaijan, Angola, United Kingdom, Philippines, Oman, France, Algeria, Macau, Sri Lanka, Tibet, Norway, Mexico, Venezuela, Denmark, Russia, Bhutan, Estonia, Austria, Vietnam, Argentina, Turkey, Greece, Romania, Bahrain, Bangladesh, Afghanistan, Italy, Poland, Zimbabwe, Thailand, India, Kenya, Ecuador, Puerto Rico, Nepal, Malaysia, Bulgaria, Libya, Slovakia, Chile, Serbia, Australia, Poland, Iran, Costa Rica, Peru, South Korea, Iraq, Iran, Indonesia, Spain, Trinidad & Tobago,Tunisia, Qatar, Japan, Canada, Taiwan, Yemen, Mongolia, Czech Republic, Israel, Ghana, Egypt, Nigeria, Saudi Arabia, United Arab Emirates, Namibia, Hungary, South Africa, Hong Kong, Croatia, Colombia, Lebanon, Nigeria, Portugal, Finland, Pakistan, Jordan, Sweden, Belgium, Gambia, Lithuania, United States, Chile, Bolivia, Germany, Singapore, Ireland, Gabon, Kuwait, Switzerland, Mexico, Belarus, Kazakhstan, Morocco, China, Netherlands, Germany, Belgium, Italy, Turkey, Denmark and UK.

FAQ

What is 321H stainless steel?

321H stainless steel is a titanium-stabilized, high-carbon version of Type 321. It offers excellent oxidation resistance up to 1500°F (816°C) and good low-temperature toughness. It is ideal for high-temperature applications such as exhaust systems and furnace components.

What is the difference between 321 and 321H?

The main difference between 321 and 321H stainless steel lies in their carbon content:

  • 321: Contains a maximum of 0.08% carbon.
  • 321H: Contains between 0.04% and 0.10% carbon.

Both grades include up to 2.0% manganese, 0.75% silicon, and 0.045% phosphorus. The higher carbon content in 321H enhances its strength and stability at high temperatures compared to 321.

What is a 321 stainless steel tube?

A 321 stainless steel tube is a heat-resistant, austenitic stainless steel tube known for maintaining good corrosion resistance and strength at high temperatures. It retains toughness and strength even at cryogenic temperatures, making it suitable for applications such as exhaust systems, heat exchangers, and high-temperature processes.

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