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ASTM A358 Stainless Steel TP321 / 321H CL.1 EFW Pipes

Welded pipes are an integral part of several industries that transport liquids, chemicals, gasses, and other substances. These industries require pipes that are durable, sturdy, and resistant to corrosion. To meet these requirements, ASTM A 358 GR. TP 321 and 321H CL.1 EFW Welded Pipes are used widely. ASTM A 358 GR. TP 321 EFW Welded Pipes come in different types, including 321 Seamless Pipes, 321 Welded Pipes, and 321 ERW Pipes. Seamless Pipes are made from a single solid steel piece without seams or joints, while welded pipes are made by rolling or forming steel sheets and welding them together. ERW pipes are made using a fusion welding process that involves applying heat and pressure to fuse the edges of the steel sheets.

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ASTM A 358 GR. TP 321H CL.1 EFW Welded Pipes are specifically designed to withstand high-temperature environments. These pipes find their application in industries such as Chemical, Petrochemical, and Refineries, where they transport materials that require high-temperature processing. 321H CL.1 EFW Welded Pipes are also used to manufacture furnace components requiring high-temperature resistance.

ASTM A 358 GR. TP 321 EFW Welded Pipes are known for their resistance to corrosion, oxidation, and high temperatures. These pipes have excellent weldability, making them easy to install and repair. The addition of titanium stabilizes these pipes, making them immune to intergranular corrosion. The pipes also have low carbon content, making them less sensitive to sensitization, which is crucial in high-temperature applications.
321H CL.1 EFW Welded Pipes have several benefits that make them ideal for high-temperature applications. These pipes are incredibly resistant to creep deformation and can withstand high temperatures and pressure. Additionally, these pipes exhibit excellent thermal conductivity, making them ideal for transferring heat. They are also relatively easy to fabricate and offer excellent weldability, making them easy to install and repair.

Choosing the right ASTM A 358 GR. TP 321 EFW Welded Pipes and 321H CL.1 EFW Welded Pipes for your industry require an in-depth understanding of the materials that will be transported. The size and thickness of the pipes are essential, as they will determine their ability to withstand pressure, temperature, and environmental factors. ASTM A 358 GR. TP 321 and 321H CL.1 EFW Welded Pipes are essential components in industries that rely on pipes to transport materials. Understanding the different types of pipes, their uses, and the benefits they offer is crucial in selecting the right pipes for the industry.


ASTM A358 SS TP321 EFW Pipes are commonly used in high-temperature applications such as chemical processing, oil and gas, power generation & aerospace industries.

The minimum tensile strength of ASTM A358 SS TP321 EFW Pipes is 75 ksi (515 MPa).

The maximum size of ASTM A358 EFW Pipes is 100 inches (2540 mm) in diameter.

Specification of Stainless Steel TP321, 321H Class 1 EFW Pipes

Spec bag
Seamless Pipe
Specifications: ASTM A358 / ASME SA358
Dimension Standard : ANSI B36.19M, ANSI B36.10
EFW Pipe Range : 6" NB - 48" NB
Type : EFW Pipes
Form : Round Pipes, Square Pipes, Rectangular Pipe
Types : Round, Square, Rectangle, Coil, "U" Shape, Hydraulic & Honed Pipes

Types of Stainless Steel TP 321, 321H CL 1 EFW Pipes

Stainless Steel TP321, 321H CL.1 EFW Pipes

SS 321/321H EFW Pipes

  • - ASTM A358 SS TP321 CL 1 EFW Pipes
  • - 1.4541 / 1.4878 EFW Pipes
  • - S32100 / S32109 EFW Pipes
  • - TP321H Class 1 SS EFW Pipe
  • - ASME SA358 SS 321 CL 1 EFW Pipes
  • - Stainless Steel TP321H Class 1 EFW Pipes Supplier
  • - SS TP321 CL.1 EFW Welded Pipes Manufacturer
SS TP321, 321H CL.1 Electric Fusion Welded Pipes

A358 TP321 /321H CL.1 EFW Pipes

  • - ASTM A358 SS TP321 CL 1 EFW Welded Pipes
  • - 1.4404/1.4541 Electric Fusion Welded Pipes
  • - S32100 / S32109 Electric Fusion Welded Pipes
  • - TP321H Class 1 SS Electric Fusion Welded Pipe
  • - SA358 SS 321 CL 1 Electric Fusion Welded Pipes
  • - Stainless Steel 321H Class 1 EFW Welded Pipes
  • - SS TP321 CL.1 EFW Welded Pipes Manufacturer

Equivalent Grades for Stainless Steel TP321 / 321H Class 1 EFW Pipes

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

Stainless Steel 321, 321H Class 1 EFW Pipes Chemical Composition

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
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

Mechanical Properties of Stainless Steel TP321 / 321H Class 1 EFW Pipes

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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Application Industries

  • Refineries
  • Petrochemicals Industry
  • Oil & Gas Industry
  • Mining
  • Construction
  • Pharmaceuticals
  • Automobile