Stainless Steel 321 and 321H Welded Pipes

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Stainless Steel 321 and 321H Welded Pipes Manufacturer, Supplier and Exporter in Hamilton, New Zealand

Blundell Pipes and Tubes, a reputable manufacturer and supplier located in Hamilton, New Zealand, specializes in high-quality Stainless Steel 321 and 321H Welded Pipes, perfect for high-temperature and corrosive environments. These pipes are crafted using cutting-edge welding technology, ensuring consistent wall thickness, precise dimensions, and a smooth finish. Renowned for their outstanding resistance to oxidation and intergranular corrosion, the Stainless Steel 321 and 321H Welded Pipes from Blundell Pipes and Tubes are a go-to choice for critical applications where thermal stability, durability, and long-lasting reliability are a must.

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These welded pipes are made from austenitic stainless steel alloys that are stabilized with titanium, which helps prevent carbide precipitation during welding and high-temperature use. The 321H grade features a higher carbon content, enhancing its strength at elevated temperatures. With a chemical makeup that includes chromium and nickel, these pipes boast excellent corrosion resistance, oxidation protection, and mechanical strength. On the mechanical side, they deliver good tensile and yield strength, impressive ductility, strong creep resistance at high temperatures, and dependable impact toughness, making them ideal for continuous high-heat operations.

Stainless Steel 321 and 321H Welded Pipes Specification

Specifications : ASTM A312 / ASME SA312

Outside Diameter : 6.00 mm OD up to 914.4 mm OD, Sizes up to 24″ NB available Ex-stock, OD Size available Ex-stock

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

Size : 1/2″ NB – 24″ NB

Type : Welded

Form: Round Pipes, Square Pipes, Rectangular Pipes.

Length : Single Random, Double Random & Required Length

End : Plain End, Beveled End, Treaded

Equivalent Grades for Stainless Steel 321 and 321H Welded 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

321 and 321H Stainless Steel Welded 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

SS 321 and 321H Welded Pipes 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 321 and 321H Stainless Steel Welded Pipes from Blundell Pipes and Tubes?

Choosing Stainless Steel 321 and 321H Welded Pipes guarantees excellent corrosion resistance, high strength, and durability. Designed for diverse industrial applications, it delivers reliable performance in tough environments while maintaining competitive pricing for cost-effective solutions.

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Largest 321 and 321H Stainless Steel Welded Pipes Supplier in Hamilton, New Zealand

Blundell Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 321 and 321H Welded Pipes in Hamilton, New Zealand, offers a comprehensive range of high-quality pipes and tubing suitable for various industrial applications. Our extensive inventory and commitment to exceptional service make us a trusted choice for regional products.

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321 and 321H Stainless Steel Welded Pipe Sizes

NB Sizes	Sch 5	Sch 10	Sch 40	Sch 80	Sch 160
1/8″	✓	✓	✓	✓
1/4″	✓	✓	✓	✓
3/8″	✓	✓	✓	✓
1/2″	✓	✓	✓	✓	✓
3/4″	✓	✓	✓	✓	✓
1″	✓	✓	✓	✓	✓
1 1/4″	✓	✓	✓	✓	✓
1 1/2″	✓	✓	✓	✓	✓
2″	✓	✓	✓	✓	✓
2 1/2″	✓	✓	✓	✓	✓
3″	✓	✓	✓	✓	✓
4″	✓	✓	✓	✓	✓
5″	✓	✓	✓	✓
6″	✓	✓	✓	✓

Physical Properties of SS 321 and 321H Welded Pipes

Grade	Density (kg/m3)	Elastic Modulus (GPA)	Mean Co-eff of Thermal Expansion (µm/m/°C)			Thermal Conductivity (W/m.K)		Specific Heat 0-100°C (J/kg.K)	Elec Resistivity (nΩ.m)
			0-100°C	0-315°C	0-538°C	At 100°C	At 500°C
321 and 321H	8027	193	16.6	17.2	18.6	16.1	22.2	500	720

Types of 321 and 321H Stainless Steel Welded Pipes

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

We offer custom sizes for Stainless Steel 321 and 321H Welded Pipes to meet your specific needs. Our dedicated team at Blundell Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@blundellpipes.co.nz.

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Stainless Steel 321 and 321H Welded Pipes find extensive use in chemical and petrochemical plants, oil and gas refineries, and power generation facilities where high-temperature performance and corrosion resistance are crucial. They’re commonly utilized in heat exchangers, condensers, boilers, furnace components, and exhaust systems. Additionally, these pipes are well-suited for marine, offshore, and thermal processing applications. Their long service life, low maintenance needs, and excellent stability at high temperatures make them perfect for demanding industrial piping systems.