Stainless Steel 321 and 321H Welded Tubing

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Stainless Steel 321 and 321H Welded Tubing Manufacturer, Supplier and Exporter in Canberra, Australia

David Pipes and Tubes is a reputable manufacturer and supplier of stainless steel 321/321H welded tubing, proudly based in Canberra, Australia. The company focuses on crafting top-notch welded tubing that offers exceptional corrosion resistance, high-temperature stability, and dependable performance in tough industrial settings. The stainless steel 321/321H welded tubing is enhanced with titanium, which helps prevent carbide precipitation during welding or when exposed to high temperatures for extended periods, ensuring it remains durable and structurally sound over time. With meticulous manufacturing processes and strict adherence to international standards, David Pipes and Tubes delivers welded 321/321H tubing that’s perfect for applications in chemical processing, petrochemicals, power generation, and instrumentation.

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This stainless steel tubing is made up of chromium (17–19%), nickel (9–13%), and titanium (0.3–0.8%), with the 321H variant featuring a higher carbon content for better strength at elevated temperatures. It boasts impressive mechanical properties, including a tensile strength of 515–700 MPa, yield strength of 205–275 MPa, elongation of 35–40%, and a hardness rating below 90 HRB. These characteristics provide outstanding resistance to intergranular corrosion, oxidation, and thermal fatigue, making it suitable for long-term use in harsh and high-temperature environments.

Stainless Steel 321 and 321H Welded Tubing Specification

Welded Tubes Size : 1 / 8″ NB – 24″ NB

Specifications : ASTM A/ASME SA213, A249, A269, A312, A358

Standard : ASTM, ASME and API

Length : Single Random, Double Random & Required Length

Outer Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24” NB

Thickness : 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS

Schedule : SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS

Types : Welded

Form : Round Tubes, Square Tubes, Rectangular Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes

End : Plain End, Beveled End, Treaded

Stainless Steel 321 and 321H Welded Tubing Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	Fe
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

Stainless Steel 321 and 321H Welded Tubing Mechanical Properties

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 %

If You Are Looking To Buy High Quality

We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.

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Why Choose Stainless Steel 321 and 321H Welded Tubing from David Pipes and Tubes?

Choose Stainless Steel 321 and 321H Welded Tubing from David Pipes and Tubes for exceptional corrosion resistance, superior strength and excellent durability. Ideal for a variety of industrial applications it provides outstanding performance in harsh environments. With precision manufacturing and quality assurance, we ensure reliable and durable tubing solutions.

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Largest Stainless Steel 317 and 317L Welded Tubing Supplier in Canberra, Australia

David Pipes and Tubes is the largest supplier of Stainless Steel 317 and 317L Welded Tubing in Canberra, Australia. Known for its high-quality products. We offer superior corrosion resistance, strength, and durability. Trusted by industries worldwide they provide reliable precision-engineered tubing for various applications and project needs.

Stainless Steel 321 and 321H Welded Tubing Grade Equivalent

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

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Types of Stainless Steel 321 and 321H Welded Tubing

Are Custom Sizes Available for Stainless Steel 321 and 321H Welded Tubing?

Yes, David Pipes and Tubes offer large custom designs for Stainless Steel 321 and 321H Welded Tubing. With design, wall thickness and length. Their adjustable options ensure the tubing meets specific application requirements. This flexibility makes it more efficient and reliable for different industries and environments. For more details, contact us at sales@davidpipes.com.

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You’ll find stainless steel 321/321H welded tubing commonly used in heat exchangers, boiler tubes, furnace components, exhaust systems, and instrumentation lines, where leak-proof performance, corrosion resistance, and high-temperature stability are crucial. Its welded design allows for precise dimensional control, easy installation, and reliable fluid transport. Thanks to the titanium stabilization, it resists intergranular corrosion during welding or heat exposure, making 321/321H welded tubing an excellent choice for chemical plants, petrochemical refineries, power generation facilities, and other industrial operations that demand durability, reliability, and a long service life.