At Krygen Metalloys, we specialize in manufacturing Stainless Steel 321H tubes that meet the highest industry standards for performance and reliability. As trusted manufacturers, suppliers, stockists, and exporters, we deliver products that combine strength, durability, and precise engineering. Our 321H grade stainless steel tubes are stabilized with titanium, offering superior resistance to intergranular corrosion and exceptional high-temperature strength. Every tube is produced using advanced technology, ensuring consistent quality and dimensional accuracy for demanding industrial environments.
These tubes are widely used in industries where heat resistance and structural stability are critical. In the oil & gas sector, our Stainless Steel 321H tubes perform reliably in high-pressure pipelines and refinery equipment. Petrochemical plants rely on them for heat exchangers and processing units that handle corrosive substances. In construction, they are valued for their ability to withstand both environmental exposure and structural stress. Their versatility extends to food processing and pharmaceutical applications, where hygiene, corrosion resistance, and compliance with strict safety standards are non-negotiable.
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One of the main advantages of Stainless Steel 321H tubes is their enhanced creep resistance at elevated temperatures. This makes them an ideal choice for systems operating in the 500–900°C range, where standard stainless steel grades may lose strength. Krygen Metalloys ensures that each tube is manufactured in accordance with international specifications such as ASTM, ASME, and EN, so customers can be confident in performance and compliance no matter the destination. Our quality control procedures are rigorous, combining automated inspections with expert manual checks at every stage of production.
As global suppliers and exporters, we maintain a robust stock of Stainless Steel 321H tubes in a variety of sizes, thicknesses, and finishes. This allows us to fulfill both large-scale industrial orders and urgent project requirements with minimal lead times. Whether supplying a petrochemical plant in the Middle East, a construction project in Europe, or a pharmaceutical facility in Asia, Krygen Metalloys delivers with precision and consistency. Our logistics network ensures that orders reach clients securely and on schedule, regardless of location.
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Krygen Metalloys stands apart not only for product quality but also for customer-focused service. We work closely with engineers, project managers, and procurement teams to understand technical requirements and provide tailored solutions. Our experienced team can recommend the right tube specifications for complex applications, ensuring optimal performance while meeting budget and timeline constraints. By combining technical expertise with responsive communication, we have built long-term partnerships across industries and continents.
In a market where reliability is everything, Krygen Metalloys is committed to supplying Stainless Steel 321H tubes that deliver measurable value over their service life. From resisting corrosion in offshore oil rigs to maintaining sterility in pharmaceutical production lines, our products are engineered for environments where failure is not an option. Backed by global reach, rigorous quality assurance, and a reputation for excellence, we remain the go-to choice for companies seeking dependable stainless steel tube solutions.
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Stainless Steel 321H Tubes Specification
Specifications | ASTM A213, A312, A269, A358 / ASME SA213, SA312, SA269, SA358 |
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Outside Diameter | 6.00 mm OD up to 914.4 mm OD, Sizes up to 24" NB available Ex-stock, OD Size Steel Tubes available Ex-stock |
Thickness Range | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Type | Seamless / ERW / Welded / Fabricated / CDW |
Form | Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, "U" Shape, Pan Cake Coils, Hydraulic Tubes |
Length | Single Random, Double Random & Required Length |
End | Plain End, Beveled End, Treaded |
Outside Finish | 2B, No.4, No.1, No.8 Mirror Finish for Stainless Steel Tubes, Finish as per customer Requirements |
Delivery Condition | Annealed and Pickled, Polished, Bright Annealed, Cold Drawn |
Mechanical Properties of Stainless Steel 321H Tubes
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 | ||||
321H | 515 | 205 | 40 | 95 | 217 |
321H also has a requirement for a grain size of ASTM No 7 or coarser. |
Chemical Composition of Stainless Steel 321H Tubes
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | Other | |
---|---|---|---|---|---|---|---|---|---|---|---|
321H | min. max |
0.04 0.10 |
2.00 | 0.75 | 0.045 | 0.030 | 17.0 19.0 |
- | 9.0 12.0 |
- | Ti=4(C+N) 0.70 |
Application of Stainless Steel 321H Tubes
