Stainless Steel 304 Flanges Manufacturer, Supplier & Exporter in India

Stainless Steel 304 Flanges are corrosion-resistant pipe connection components manufactured from austenitic stainless steel grade 304. Also known as SS 304 Flanges, ASTM A182 F304 Flanges, and UNS S30400 Flanges, they offer excellent strength, weldability, hygiene, and long service life across chemical, food processing, oil & gas, water treatment, and industrial piping applications.

Stainless Steel 304 Flanges

Stainless Steel 304 Flanges are among the most widely used stainless steel piping components due to their excellent balance of corrosion resistance, strength, durability, and cost efficiency. Designed to connect pipes, valves, pumps, and other equipment securely, these flanges help simplify maintenance while ensuring reliable sealing performance under different operating conditions.

We manufacture and supply high-quality SS 304 Flanges in multiple pressure classes, sizes, and international standards to support industrial requirements across domestic and international markets. Our products are produced using controlled manufacturing processes and verified for dimensional accuracy, material integrity, and long-term performance.

Commonly referred to as 304 SS Pipe Flange, Alloy 304 Flanges, SUS 304 Flanges, UNS S30400 Flanges, WERKSTOFF NR. 1.4301 Flanges, and ASTM A182 F304 Flanges, this grade remains a preferred solution for industries requiring reliable corrosion protection and fabrication flexibility.

What are Stainless Steel 304 Flanges?

Stainless Steel 304 Flanges are forged or machined components manufactured using chromium-nickel austenitic stainless steel. Grade 304 contains approximately 18% chromium and 8% nickel, providing strong oxidation resistance and excellent performance in moderately corrosive environments.

These flanges are commonly manufactured according to ASTM A182 F304 Flanges and ASME SA182 F304 Pipe Flanges specifications and are compatible with international piping standards.

Key Features of SS 304 Flanges

  • Excellent corrosion and oxidation resistance
  • Strong mechanical performance
  • Easy welding and fabrication
  • Hygienic surface for clean applications
  • Good temperature resistance
  • Long operational lifespan
  • Available in multiple pressure ratings and dimensions
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Types of Stainless Steel 304 Flanges We Supply

SS 304 Slip On Flanges

Easy to install and widely used in low to medium pressure applications. These flanges slide over the pipe before welding.

SS 304 Weld Neck Flanges

Designed with a long tapered hub for superior stress distribution and high-pressure systems.

304 Stainless Steel Blind Flanges

Used to close pipeline ends and allow future expansion or maintenance.

SS 304 Socket Weld Flanges

Suitable for small-diameter piping where smooth flow and strong joints are required.

SS 304 Lap Joint Flanges

Preferred for systems requiring frequent dismantling and maintenance.

SS 304 Threaded Flanges

Installed without welding and commonly used where welding is difficult.

Stainless Steel 304 Ring Type Joint (RTJ) Flange

Manufactured for high-pressure applications requiring leak-resistant metal-to-metal sealing.

SS 304 Orifice Flanges

Engineered for measuring fluid flow in process piping systems.

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Stainless Steel 304 Flanges Specifications

Specification Details
Product Stainless Steel 304 Flanges
Material Grade Stainless Steel 304
ASTM Standard ASTM A182 F304 Flanges
ASME Standard ASME SA182 F304 Pipe Flanges
UNS Grade UNS S30400 Flanges
DIN / EN WERKSTOFF NR. 1.4301 Flanges
Equivalent GOST 08Х18Н10 Plate Flange
Standard ANSI B16.5 SS 304 Flanges
Size Range ½” NB to 48” NB
Pressure Classes 150#, 300#, 600#, 900#, 1500#, 2500#
Surface Finish Machined, Smooth, RF, FF, RTJ

We offer Stainless Steel 304 Flanges Dimensions according to international standards to ensure compatibility across piping systems.

Chemical Composition of SS 304 Flanges

Element Composition (%)
Chromium 18.0–20.0
Nickel 8.0–10.5
Carbon 0.08 Max
Manganese 2.00 Max
Silicon 1.00 Max
Phosphorus 0.045 Max
Sulfur 0.030 Max

Mechanical Properties of ASTM A182 F304 Flanges

Property Value
Tensile Strength 515 MPa Min
Yield Strength 205 MPa Min
Elongation 40% Min
Hardness Approx. 92 HRB

These properties make ANSI B16.5 SS 304 Flanges suitable for demanding industrial environments.

Physical Properties of Stainless Steel F304 Pipe Flanges

Property Value Units
Density 8.00 g/cm³
Melting Point 1400 – 1450 °C
Thermal Conductivity 16.2 W/m·K
Electrical Resistivity 0.072 Ω·mm²/m
Specific Heat Capacity 500 J/kg·K

Applications of Stainless Steel 304 Flanges

Due to their versatility and durability, Stainless Steel 304 Flanges are widely used across industries:

  • Oil and gas processing
  • Chemical processing plants
  • Food and beverage manufacturing
  • Water treatment facilities
  • Pharmaceutical production
  • Marine applications
  • Heat exchangers
  • Power generation plants
  • Construction and infrastructure

Related SS Flanges Grades

Why Choose Us as Your Stainless Steel 304 Flanges Manufacturer?

Selecting the right supplier directly affects reliability, project timelines, and operating costs.

We focus on delivering:

  • Consistent product quality
  • International specification compliance
  • Wide inventory availability
  • Custom dimensions and finishes
  • Fast export support
  • Technical assistance during selection
  • Competitive pricing and documentation support

As a trusted Stainless Steel 304 Flanges Manufacturer, SS 304 Flanges Supplier, and Stainless Steel 304 Flanges Exporter, we support both standard and project-based requirements. Need pricing, dimensions, or technical support for SS 304 Flanges? Contact our team for product recommendations, custom requirements, and quick quotations for domestic and export orders.

Global Reach

ASC LLP boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Stainless Steel 304 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

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Countries We Export To

UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.

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