Stainless Steel 321 / 321H Pipes & Tubes

Stainless Steel 321 / 321H Pipes & Tubes

Stainless Steel 321 / 321H Pipes & Tubes

Meta Aerospace, a leading Stainless Steel 321/321H Pipes & Tubes Manufacturer and Supplier, specializes in supplying industrial steel products of unparalleled quality. Committed to adhering to international standards, we utilize high-quality raw materials in the manufacturing process. Our dedication to customer satisfaction extends to offering customized pipes and tubes, tailored to meet specific requirements. Before delivery, all products undergo rigorous testing and examination to ensure reliability for clients and vendors alike.

SS 321/321H Pipes & Tubes are engineered to possess superior physical and mechanical properties including elongation, density, modulus of expansion, thermal conductivity, electrical resistivity, tensile strength, yield strength, ultimate tensile strength, electrical conductivity, and proof stress. These pipes are available in various specifications such as grade, dimensions, tolerance, applications, type, form, shape, size, schedule, finish, surface, length, width, thickness, and end. Additionally, they are offered in diverse types including seamless, welded, round, square, rectangular, polished, decorative, thick wall tubes, and electro-polished variants. Formulated with a combination of carbon, manganese, silicon, phosphorus, sulfur, chromium, nitrogen, nickel, and titanium, SS 321/321H Pipes & Tubes find application in pharmaceutical equipment, pharmaceuticals, seawater equipment, chemical equipment, specialty chemicals, gas processing, petrochemicals, power generation, heat exchangers, condensers, paper production, offshore oil drilling, and pulp manufacturing.

Recognized for their suitability in flues and spiral welded pipes, SS 321/321H Pipes & Tubes exhibit remarkable resistance to carbide precipitation due to the addition of titanium during production, enhancing their durability. Widely used in aerospace equipment and storage units for their non-corrosive nature, these tubes boast outstanding qualities including high strength, tensile strength, ductility, durability, flexibility, and formability.

Uses and Applications of Stainless Steel 321/321H Pipes & Tubes

Specifications of Stainless Steel 321/321H Pipes and Tubes

Stainless steel pipe specification astm a312, a358 / asme sa312, sa358
Ss tube specificationastm a213, a269, a249, a511, a554 / asme sa213, sa269, sa249, sa511, sa554
Pipe size 1/8” nb to 24” nb, 1/4” od to 24” od sizes
Tube size1/2″ od to 8″ od
Thickness range

0.3mm – 50 mm, sch 5,

sch10, sch 40, sch 80, sch 80s, sch 160, sch xxs, sch xs


seamless / erw / welded /

fabricated pipes


round, square, rectangular, oval,

hydraulic etc


single random, double random

& required length

Endplain end, beveled end, treaded
End protection plastic caps
Outside finish

2b, no.4, no.1, no.8

mirror finish for stainless steel pipes, finish as per customer requirements

Delivery condition

annealed and pickled,

polished, bright annealed, cold drawn


packed in wooden boxes, plastic

bags, steel strips bundled, or as per customers’ requests


sizes and specifications other

than above can be manufactured on request


321/321H Stainless Steel Pipes and Tubes Equivalent Grades

SS 321 S32100 1.4541 X6CrNiTi18-10 SUS 321
SS 321H S32109 1.4878 X12CrNiTi18-9 SUS 321H

Chemical Composition of Stainless Steel 321/321H Pipes & Tubes

% 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 Stainlesss Steel 321/321H Seamless 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

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