Stainless Steel 304 / 304L Pipe Fittings Manufacturers & Suppliers in India

Stainless steel has become one of the most widely used materials in various industries due to its exceptional properties such as corrosion resistance, durability, and versatility. Among the different grades of stainless steel, 304 and its low-carbon variant 304L stand out as popular choices for piping systems in diverse applications. In this article, we will delve into the characteristics, benefits, and applications of stainless steel 304 and 304L pipe fittings.

Table Of Content

What is Stainless Steel 304 Pipe Fittings
304 Stainless Steel Pipe Fittings Specifications
Stainless Steel 304L Butt weld Fittings Equivalent Material
SS 304 Pipe Fittings Chemical Composition
304L Stainless Steel Butt weld Fittings Mechanical Properties
Types Of Stainless Steel 304 Pipe Fittings
Application Industries Of SS 304L Pipe Fittings

Composition and Properties of Stainless Steel 304 / 304L Pipe Fittings

Stainless steel 304 is an austenitic stainless steel alloy containing chromium and nickel, along with small amounts of other elements such as manganese, silicon, and carbon. This composition provides excellent corrosion resistance, high strength, and good formability, making it suitable for a wide range of applications, including piping systems.

Stainless steel 304L is a variation of 304 with a lower carbon content, typically around 0.03% or lower. This carbon reduction minimizes carbide precipitation during welding and eliminates the risk of intergranular corrosion, enhancing the material's weldability and corrosion resistance in certain environments.

Benefits of Stainless Steel 304 / 304L Pipe Fittings

1. Corrosion Resistance: Stainless steel 304 Pipe Fittings exhibit excellent resistance to corrosion in various environments, including acidic, alkaline, and chloride-rich environments. This makes them ideal for applications where corrosion is a concern, such as in chemical processing, food processing, and marine environments.

2. High Strength: Both grades offer high strength and toughness, allowing them to withstand high-pressure and high-temperature conditions common in industrial piping systems.

3. Versatility: Stainless steel 304L pipe fittings are highly versatile and can be easily fabricated into various shapes and sizes to meet specific requirements. They are compatible with different welding techniques, allowing for seamless integration into piping systems.

4. Hygienic Properties: These grades of stainless steel are non-reactive and easy to clean, making them suitable for use in sanitary applications such as food and beverage processing, pharmaceuticals, and healthcare facilities.

5. Longevity: Stainless steel 304 Buttweld Pipe Fittings are known for their durability and longevity, offering a cost-effective solution for long-term piping infrastructure needs.

Applications of Stainless Steel 304 / 304L Pipe Fittings

Stainless steel 304 and 304L pipe fittings find applications across a wide range of industries, including:

Chemical Processing: Piping systems for transporting corrosive chemicals and acids.
Food and Beverage: Hygienic piping systems for food processing, dairy plants, breweries, and beverage production facilities.
Oil and Gas: Offshore and onshore pipelines, refineries, and petrochemical plants.
Water Treatment: Pipes and fittings for water distribution, desalination plants, and wastewater treatment facilities.
Pharmaceuticals: Critical applications requiring sterile and corrosion-resistant piping systems.

304 Stainless Steel Pipe Fittings Specifications

Specifications	ASTM A403 / ASME SA403
Dimensions	ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, BS4504, BS4504, BS1560, BS10
Size	Seamless Butt Weld Fittings: 1/2" - 10" Welded Butt Weld Fittings: 1/2" - 48"
Thickness	SCH10, SCH20, SCH30, STD SCH40, SCH60, XS, SCH 80, SCH 100, SCH 120, SCH 140, SCH 160, XXS available with NACE MR 01-75
Size Range	½" NB to 24" NB in Sch 10s, 40s, 80s, 160s, XXS. (DN6~DN100) ASTM A403 Stainless Steel Buttweld Fitting
Type	DN15-DN1200
Bending Radius	R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom MSS Sp-43 Stainless Steel Pipe Fitting
Elbows	Angle : 22.5 deg, 30deg, 45 deg, 90 deg, 180 deg, 1.0D, 1.5D, 2.0D, 2.5D, 3D, 4D, 5D, 6D, 7D-40D. Standard: ASME B16.9, ASME B16.28, ASME B16.25, MSS SP-75 DIN2605 JISB2311 JISB2312 JISB2313, BS, GB, ISO
Connection	Welding
Manufacturing process	Forge, Cast, Push, Press, etc.
Key markets and industries	Bitumen upgraders. Heavy oil refineries. Petrochemicals and acids. Nuclear power (mostly seamless).
Test Certificates	EN 10204/3.1B Raw Materials Certificate 100% Radiography Test Report Third Party Inspection Report, etc
Specialized manufacturer of	90 Deg Elbows, 45 Deg Elbows, Tees, Crosses, Reducers, Pipe Cap, Stub End, Pipe Bend

304L Stainless Steel Pipe Fittings Manufacturing Process

Hot forming or Extrusion Method

By forcing a heated billet through a molded die's opening, forged parts are produced by the process of hot extrusion. This article discusses lubricated versus non-lubricated hot extrusion.

Hydraulic Bulge method – Cold forming

Internal pressure and axial feeding are used in hydroforming tube to create the perfect sort of tube. The operation's results can be predicted using the finite-element method.

Deep Drawing Method for caps

Some of the most widely used techniques for creating caps involve cutting the plate into a circle and shaping it with a deep draw. The process of deep drawing sheet metal storage, also known as blanks, creates a circular or irregular shape that is longer than half of its diameter.

Flare Method for Stub ends

The flaring procedure is used to create lap joint flanges and stub ends. A flare or flange face with a cutout called the flow end. Welding is frequently used to generate stub ends after the forge block has been machined to the desired size.

Stainless Steel 304L Butt weld Fittings Equivalent Material

STANDARD	UNS	WNR.	AFNOR	EN	JIS	BS	GOST
SS 304	S30400	1.4301	Z7CN18‐09	X5CrNi18-10	SUS 304	304S31	08Х18Н10
SS 304L	S30403	1.4306/1.4307	Z3CN18‐10	X2CrNi18-9 / X2CrNi19-11	SUS 304L	304S11	03Х18Н11

SS 304 Pipe Fittings Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N
SS 304	0.08 max	2 max	0.75 max	0.045 max	0.030 max	18 – 20	–	8 – 11	–
SS 304L	0.035 max	2.0 max	1.0 max	0.045 max	0.03 max	18 – 20	–	8 – 13	–

304L Stainless Steel Butt weld Fittings Mechanical Properties

Grade	Density	Melting Point	Tensilee Strength	Yield Strength (0.2%Offset)	Elongation
SS 304/304L	8.0 g/cm3	1400 °C (2550 °F)	Psi – 75000, MPa – 515	Psi – 30000, MPa – 205	40 %

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Types Of Stainless Steel 304 Pipe Fittings

SS 304 Elbow

SS 304 Tee

SS 304 Cross

SS 304 Reducer

SS 304 Stub End

SS 304 Pipe Cap

SS 304 Bend

SS 304 Pipe Nipples

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