Stainless Steel 304H Welded Pipes

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Stainless Steel 304H Welded Pipes Manufacturer, Supplier and Exporter in Kuala lumpur, Malaysia

Maria Pipes and Tubes, based in Kuala Lumpur, Malaysia, has earned a solid reputation as a reliable manufacturer and supplier of top-notch stainless steel piping solutions. Their Stainless Steel 304H Welded Pipes are specifically designed to withstand high temperatures and tough industrial environments. Crafted to comply with important international standards like ASTM A312 / ASME SA312, these welded pipes deliver outstanding strength, heat resistance, and dependability, making them perfect for industries such as power generation, petrochemical processing, and heat-treatment systems.

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The Stainless Steel 304H Welded Pipes feature a high-carbon austenitic alloy composition, which includes 18–20% chromium, 8–10.5% nickel, and a carbon content that ranges from 0.04% to 0.10%. This elevated carbon content significantly boosts their mechanical strength and creep resistance at high temperatures. These pipes showcase impressive mechanical properties, with a minimum tensile strength of around 515 MPa, yield strength of about 205 MPa, elongation of at least 40%, and hardness reaching up to HRB 92 (Brinell 201).

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 Maria Pipes and Tubes?

Choosing Stainless Steel 304H 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 304H Stainless Steel Welded Pipes Supplier in Kuala lumpur, Malaysia

These welded pipes are commonly utilized in applications that experience continuous or cyclic heat, such as boiler tubes, superheaters, heat exchangers, and components for furnaces. They can handle continuous service temperatures of up to 920 °C and intermittent exposure up to 870 °C. Additionally, they are well-suited for use in petrotechnical pipelines, steam systems, and high-temperature structural settings. The welded design not only provides cost efficiency for larger diameters but also ensures reliable performance under stress.

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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?

We offer custom sizes for Stainless Steel 304H Welded Pipes to meet your specific needs. Our dedicated team at Maria Pipes and Tubes provides tailored solutions for all your piping and tubing requirements. For more information, contact us at sales@mariapipes.com.

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Stainless Steel 304H Welded Pipes are widely used in various industries due to their excellent mechanical properties and corrosion resistance. It is commonly used in high-temperature environments such as power generation, chemical processing, and the oil and gas industry. In addition, these pipes are suitable for heat exchangers, boilers and pressure vessels, where power and durability are important Their versatility makes them ideal for food processing, pharmaceutical and water treatment plant. Overall, 304H welded pipes ensure reliable performance in challenging environments, increasing operational efficiency and safety.