Stainless Steel 321/321H Seamless Tubes offer a distinctive blend of qualities, making them ideal for various industrial applications. Stainless Steel 321/321H Seamless Tubes Manufactured, supplied, stocked, and exported by Metinox Overseas, these seamless tubes represent a pinnacle of stainless steel engineering. With their seamless construction and superior composition, SS 321/321H Seamless Tubes stand as a testament to quality and reliability.

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Characterized by their austenitic chromium-nickel alloy makeup, Stainless Steel 321/321H Seamless Tubes boast the addition of Titanium, elevating their performance in high-temperature environments. This addition stabilizes the alloy, preventing the formation of chromium carbide and ensuring exceptional resistance against intergranular corrosion—a crucial feature in industries such as petrochemicals, paper and pulp, and water processing.

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Moreover, the presence of Titanium imparts higher stress rupture and creep properties, further enhancing the durability of these seamless tubes. The higher carbon content in comparison to other alloys extends their utility, allowing for applications in low-temperature phosphoric acid environments and high-temperature diluted acids.

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Metinox Overseas offers an extensive range of SS 321/321H Seamless Tubes, including Round Tubes, Heat Exchanger Tubes, Hydraulic Tubes, Coiled Tubes, and more, catering to diverse industrial needs. Each tube undergoes rigorous testing, including Pitting Resistance, PMI, IGC, Chemical, Mechanical, and Hardness tests, ensuring uncompromising quality standards. These seamless tubes find favor across a spectrum of industries, including oil refineries, chemical processing, marine, and food processing, among others. Their versatility is matched only by their resilience, withstanding temperatures of up to 900 degrees Celsius with ease.

Stainless Steel 321/321H Seamless Tubes Manufacturers In Mumbai, Stainless Steel 321/321H Seamless Tubes Suppliers In Mumbai, Stainless Steel 321/321H Seamless Tubes Stockists In Mumbai, Stainless Steel 321/321H Seamless Tubes Exporters In Mumbai

In addition to their exceptional performance, Stainless Steel 321/321H Seamless Tubes exhibit excellent weldability and corrosion resistance, akin to SS 302 or SS 304 in annealed form. Whether in Round, Square, or Rectangular form, these tubes deliver outstanding performance, making them indispensable in critical applications such as waste treatment and mineral processing. Metinox Overseas takes pride in delivering top-tier Stainless Steel 321/321H Seamless Tubes, crafted to perfection and adhering to the highest industry standards. From chemical analysis to third-party inspections, every tube is meticulously scrutinized to ensure unmatched quality and reliability.

For industries seeking unparalleled performance and durability in seamless tubing solutions, Metinox Overseas stands as the premier choice, offering a comprehensive range of Stainless Steel 321/321H Seamless Tubes engineered for excellence.

Stainless Steel 321/321H Tubes Standard Specifications

Specifications ASTM A213 / ASME SA213
Outside Diameter 1/8″ OD TO 2″OD 3MM OD TO 38 MM OD
Thickness 1MM TO 3 MM 0.028 TO 0.156 IN, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS
Size 1/2″ NB – 24″ NB
Type Seamless / Capillary Tubes
Form Round Tubes, Square Tubes, Rectangular Tubes.
Length Single Random, Double Random & Required Length
End Plain End, Beveled End, Treaded
Finish Annealed and Pickled, Polished, Bright Annealed, Cold Drawn

Equivalent Grades of Stainless Steel 321/321H Tubes

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
SS 331/321H S30403 1.4301 Z7CN18‐09 X5CrNi18-10 SUS 304 304S31 08Х18Н10

Chemical Composition of Stainless Steel 321/321H Tubes

Grade C Mn Si P S Cr Mo Ni N
331/321H 0.08 2.0 0.75 0.045 0.030 18.0-20.0 8.0-10.5 0.10

Stainless Steel 321/321H Tubes Mechanical Properties

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
331/321H 515 205 40 92 201

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