Stainless Steel 347 and 347H Welded Pipes

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Stainless Steel 347 and 347H Welded Pipes Manufacturer, Supplier and Exporter in Tunis, Tunisia

At Samia Pipes and Tubes, based in Tunis, Tunisia, we manufacture and supply high-quality Stainless Steel 347 and 347H Welded Tubing designed for high-temperature and corrosion-resistant applications. These niobium-stabilized grades are specifically engineered to resist intergranular corrosion during welding and prolonged heat exposure. The welded tubing is produced with advanced welding techniques to ensure dimensional accuracy, uniform wall thickness, and consistent performance. While 347 offers excellent corrosion resistance and thermal stability, 347H provides enhanced strength and creep resistance at elevated temperatures. Trusted by industries across Tunisia and beyond, Samia Pipes and Tubes delivers welded tubing solutions that meet international standards and support safe, efficient, and long-term industrial operations.

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The Stainless Steel 347 and 347H Welded Pipes are made from titanium-stabilized austenitic stainless steel, which includes chromium, nickel, and titanium. The 347H variant, with its higher carbon content, offers improved high-temperature strength and creep resistance. Both grades excel in resisting intergranular corrosion, pitting, and oxidation in harsh environments. On the mechanical side, these pipes boast high tensile and yield strength, toughness, and fatigue resistance, all while maintaining good weldability and machinability. Their welded design ensures uniform wall thickness, dimensional stability, and reliable performance even under high-pressure and high-temperature conditions.

Stainless Steel 347 and 347H Welded Pipes Welded Pipe 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 347 and 347H Welded Pipes

STANDARD	WERKSTOFF NR.	UNS	JIS	GOST	EN
SS 347	1.4550	S34700	SUS 347	08Ch18N12B	X6CrNiNb18-10
SS 347H	1.4961	S34709	SUS 347H	–	X6CrNiNb18-12

Stainless Steel 347 and 347H Welded Pipes Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Cb	Ni	Fe
SS 347	0.08 max	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 20.00	10xC – 1.10	9.00 – 13.00	62.74 min
SS 347H	0.04 – 0.10	2.0 max	1.0 max	0.045 max	0.030 max	17.00 – 19.00	8xC – 1.10	9.0 -13.0	63.72 min

SS 347 and 347H Welded Pipes Mechanical Properties

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
8.0 g/cm3	1454 °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 347 and 347H Stainless Steel Welded Pipes from Samia Pipes and Tubes?

Choosing Stainless Steel 347 and 347H 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 347 and 347H Stainless Steel Welded Pipes Supplier in Tunis, Tunisia

Samia Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 347 and 347H Welded Pipes in Tunis, Tunisia, 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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347 and 347H 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″	✓	✓	✓	✓

Types of 347 and 347H Stainless Steel Welded Pipes

Are Custom Sizes Available for 347 and 347H Stainless Steel Welded Pipes?

We offer custom sizes for Stainless Steel 347 and 347H Welded Pipes to meet your specific needs. Our dedicated team at Samia Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@samiapipes.com.

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Stainless Steel 347 and 347H Welded Tubing is widely used in industries that require high-temperature strength, corrosion resistance, and dependable welded tubing systems. Common applications include heat exchangers, boilers, exhaust systems, chemical processing equipment, petrochemical plants, and power generation facilities. Their stabilization makes them ideal for welded assemblies exposed to elevated temperatures, while 347H is preferred for prolonged high-heat service. Aerospace, energy, and thermal processing industries rely on this tubing for critical operations. Samia Pipes and Tubes supplies 347 and 347H welded tubing that delivers durability, safety, and long service life in demanding industrial environments.