Stainless Steel 304H Welded Pipes

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Stainless Steel 304H Welded Pipes Manufacturer, Supplier and Exporter in Hamilton, New Zealand

Blundell Pipes and Tubes, located in Hamilton, New Zealand, has earned a solid reputation as a reliable manufacturer and supplier of top-notch Stainless Steel 304H Welded Pipes. With a focus on precision engineering and rigorous quality control, this company offers robust piping solutions tailored for tough industrial settings. Thanks to their advanced manufacturing techniques and a strong commitment to innovation, Blundell Pipes and Tubes consistently delivers products that adhere to global standards. Their customer-centric approach guarantees dependable performance, timely deliveries, and competitive pricing, making their Stainless Steel 304H Welded Pipes a go-to choice in the construction, petrochemical, energy, and process industries, both locally and around the world.

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The composition of Stainless Steel 304H Welded Pipes includes chromium (18–20%) and nickel (8–10.5%), along with that higher carbon content to boost high-temperature strength and thermal stability. They provide impressive tensile strength of around 515 MPa, yield strength of 205 MPa, and an elongation of 40%, ensuring excellent mechanical stability, toughness, and corrosion resistance. The welded design guarantees precision, strength, and durability, even under high-pressure, high-temperature, and corrosive conditions, making these pipes perfect for critical industrial applications.

Stainless Steel 304H 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 304H Welded Pipes

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
		BS	En	No	Name
304H	S30409	304S51	–	1.4948	X6CrNi18-11	–	–

304H Stainless Steel Welded Pipes Chemical Composition

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304H	min.	0.04	–	–	–	–	18.0	–	8.0	–
304H	max.	0.10	2.0	0.75	0.045	0.030	20.0	–	10.5	–

SS 304H Welded Pipes Mechanical Properties

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
304H	515	205	40	92	201

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 304H Stainless Stee Welded Pipes from Blundell Pipes and Tubes?

Stainless Steel 304H Welded Pipes is an austenitic stainless steel grade known for its higher carbon content, which boosts its strength at high temperatures. Typically, its composition features chromium (18–20%), nickel (8–11%), carbon (0.04–0.10%), along with small amounts of manganese, silicon, sulfur, and phosphorus. This blend provides excellent tensile and yield strength, as well as outstanding creep resistance when exposed to elevated temperatures. These mechanical properties make it a reliable option in environments where heat, pressure, and corrosion are constant challenges.

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Largest 304H Stainless Steel Welded Pipes Supplier in Hamilton, New Zealand

Blundell Pipes and Tubes, a leading manufacturer and supplier of Stainless Steel 304H 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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304H 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 304H Welded Pipes

Grade	Density (kg/m3)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (m/m/0C)			Thermal Conductivity (W/m.K)		Specific Heat 0-1000C (J/kg.K)	Electrical Resistivity (n.m)
			0-1000C	0-3150C	0-5380C	at 1000C	at 5000C
304H	8000	193	17.2	17.8	18.4	16.2	21.5	500	720

Types of 304H Stainless Steel Welded Pipes

Are Custom Sizes Available for 304H Stainless Steel Welded Pipes?

You’ll find Stainless Steel 304H Welded Pipes widely used in sectors that require materials that can withstand high heat and resist corrosion. It’s commonly found in boilers, heat exchangers, superheaters, and pressure vessels that function under extreme temperatures. This grade is also essential in petrochemical plants, refineries, power generation facilities, and chemical processing operations. Its durability and stability under thermal stress make it ideal for steam piping, furnace components, and high-temperature structural systems, ensuring consistent performance in critical industrial applications.

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You’ll find Stainless Steel 304H Welded Pipes commonly used in boilers, superheaters, heat exchangers, and piping systems across the petrochemical, chemical, and power generation sectors. They’re also utilized in oil and gas refineries, marine environments, and other areas where high-temperature performance, corrosion resistance, and structural integrity are crucial. Plus, they’re ideal for process piping, exhaust systems, and industrial applications that demand long-term durability, leak-free operation, and reliability. The combination of welded construction, high-temperature strength, and corrosion resistance makes Stainless Steel 304H Welded Pipes a fantastic choice for even the most demanding industrial and commercial applications.