SS 304/304L Seamless Fittings and Welded Fittings Suppliers in Singapore

Stainless Steel 304/304L Seamless Fittings and Welded Fittings Suppliers in Singapore, SS 304/304L Pipe Fittings and Buttweld fittings for Singapore

The demand for high-quality, corrosion-resistant pipe fittings is rising in Singapore’s industrial sector. At Prime Steel Corporation, we specialize in supplying SS 304 and SS 304L seamless and welded fittings to meet the requirements of industries across Singapore, including critical regions like Jurong, Tuas, Woodlands, and Changi. Our fittings are designed to provide durability, reliability, and superior performance in even the most challenging industrial environments.

What Makes SS 304 and SS 304L Ideal for Industrial Applications?

Stainless Steel 304 (SS 304) is a versatile and widely used material due to its excellent corrosion resistance and strength. It is commonly used in industries like oil and gas, pharmaceuticals, food processing, and construction. However, SS 304L, the low-carbon variant of SS 304, is preferred in applications where welding is required due to its reduced risk of carbide precipitation during welding. This ensures better corrosion resistance in welded sections, making SS 304L highly suitable for industries that require frequent welding processes.

Both grades perform well in harsh environments, resisting corrosion, oxidation, and high pressure, which is critical in offshore oil rigs and chemical processing plants.

Seamless vs. Welded Fittings: Understanding the Difference:

When selecting fittings, it is essential to understand the differences between seamless and welded fittings.

Seamless Fittings: These are manufactured from a single piece of steel and do not have any weld joints. Seamless fittings are typically more robust and can withstand higher pressures, making them ideal for critical applications like offshore oil and gas, chemical processing, and marine industries. At Prime Steel Corporation, we offer seamless fittings ranging from 1/2″ NB to 24″ NB, with wall thicknesses from Sch 10 to XXS.
Welded Fittings: These are produced by welding steel sheets or plates. Although welded fittings may not have the same strength as seamless fittings, they are highly cost-effective and widely used in less critical applications such as water treatment and construction. Welded fittings are available in larger sizes, ranging from 1/2″ NB to 48″ NB, and offer excellent corrosion resistance at a lower cost.

Applications of SS 304/304L Seamless and Welded Fittings in Singapore

Industries in Singapore rely heavily on SS 304/304L seamless and welded fittings for various applications. For example, these fittings are essential in high-pressure systems on offshore platforms and refineries in the oil and gas sector. The marine industry also benefits from using these fittings due to their resistance to corrosion in saltwater environments. Meanwhile, pharmaceutical and food processing industries utilize SS 304/304L welded fittings for their hygienic properties and resistance to contamination.

Both seamless and welded fittings are used in construction and infrastructure development, where durability and strength are critical to ensuring the safety and longevity of buildings and structures.

Why Choose Prime Steel Corporation?

Prime Steel Corporation is committed to providing high-quality SS 304 and 304L seamless and welded fittings to industries across Singapore. Our fittings are manufactured to international standards such as ASME B16.9, ASME B16.11, and ASTM A403, ensuring the highest levels of quality and performance. With an extensive range of sizes and specifications, we can meet the diverse needs of Singapore’s industrial sectors.

Our fittings are available in:

Size Range:
- Seamless fittings: 1/2″ NB to 24″ NB
- Welded fittings: 1/2″ NB to 48″ NB
Wall Thickness: Sch 10, Sch 40, Sch 80, Sch 160, XS, XXS

Whether you need fittings for high-pressure, high-temperature applications or general-purpose use, we provide solutions tailored to your needs.

Equivalent Grades of SS 304 Buttweld Pipe Fittings

Grade	UNS No	Old British		Euronorm		Swedish SS	Japanese JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	Japanese JIS
304	S30400	304S31	58E	1.4301	X5CrNi18-10	2332	SUS 304
304L	S30403	304S11	–	1.4306	X2CrNi19-11	2352	SUS 304L
304H	S30409	304S51	–	1.4948	X6CrNi18-11	–	–

Chemical Composition of Stainless Steel 304L Pipe Fittings

Grade		C	Mn	Si	P	S	Cr	Mo	Ni	N
304	min. max.	– 0.08	– 2.0	– 0.75	– 0.045	– 0.030	18.0 20.0	–	8.0 10.5	– 0.10
304L	min. max.	– 0.030	– 2.0	– 0.75	– 0.045	– 0.030	18.0 20.0	–	8.0 12.0	– 0.10
304H	min. max.	0.04 0.10	– 2.0	– 0.75	-0.045	– 0.030	18.0 20.0	–	8.0 10.5	–

Mechanical Composition of SS 304h Buttweld Fittings

Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Hardness
Grade	Tensile Strength (MPa) min	Yield Strength 0.2% Proof (MPa) min	Elongation (% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
304	515	205	40	92	201
304L	485	170	40	92	201
304H	515	205	40	92	201
304H also has a requirement for a grain size of ASTM No 7 or coarser.

Physical Properties of Stainless Steel 304 Buttweld Elbow

Grade	Density (kg/m³)	Elastic Modulus (GPa)	Mean Coefficient of Thermal Expansion (μm/m/°C)	Thermal Conductivity (W/m·K)	Specific Heat (J/kg·K)	Electrical Resistivity (NΩ·m)
304	8000	193	17.2	17.8	18.4	16.2
304L	8000	193	17.2	17.8	18.4	16.2
304H	8000	193	17.2	17.8	18.4	16.2

Contact Us

For inquiries or to place an order for SS 304/304L seamless and welded fittings, please get in touch with us:

Email: sales@primesteelcorp.com
Website: www.primesteelcorp.com

We proudly serve Singapore’s industrial sector with quick delivery, competitive pricing, and the highest quality fittings for every application, We also export our products to the United States, Saudi Arabia, Sri Lanka, and more. Please reach out to us for more information: