Stainless Steel 321 Lap Joint Flange Manufacturers in India – Sachiya Steel International Private Limited

If you seek high-quality Stainless Steel 321 Lap Joint Flanges in India, Sachiya Steel International Private Limited is your trusted partner. With extensive experience in the stainless steel industry, we produce flanges that not only meet but exceed international standards. Stainless Steel 321 is known for its superior resistance to intergranular corrosion and oxidation, making it ideal for demanding applications. Whether you work in petrochemical, oil & gas, or marine industries, our lap joint flanges deliver reliable performance and exceptional durability.

Specifications of Stainless Steel 321 Lap Joint Flanges

Specification	Details
Flange Type	Lap Joint Flange
Material	Stainless Steel 321
Standards	ASTM A182, ASME SA182
Size Range	1/2″ NB to 24″ NB
Pressure Class	150#, 300#, 600#, 900#, 1500#, 2500#
Face Type	RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint)
Dimensions	ANSI B16.5, B16.47 Series A & B, B16.36
Manufacturing Process	Forging, Machining
End Connection	Butt Weld, Socket Weld, Threaded
Surface Finish	Smooth Finish, Rust-proof, Anti-corrosive coating
Test Certification	EN 10204 3.1, EN 10204 3.2

Applications of Stainless Steel 321 Lap Joint Flanges

Stainless Steel 321 Lap Joint Flanges excel across various industries due to their durability and resistance to corrosion, especially in high-temperature environments. Here are some key applications:

1. Chemical Processing Plants: These flanges are perfect for equipment exposed to harsh chemicals and high temperatures. They resist intergranular corrosion, making them suitable for reactors, heat exchangers, and piping systems.
2. Oil & Gas Industry: These flanges are used extensively in pipelines and offshore platforms. They must withstand the corrosive effects of saltwater and extreme temperatures. Their reliability ensures long-term performance.
3. Aerospace Industry: In the aerospace sector, Stainless Steel 321 components are essential because they endure extreme conditions. These flanges are commonly used in engine components and exhaust systems.
4. Marine Applications: Thanks to their resistance to seawater corrosion, these flanges are crucial in shipbuilding and other marine applications. They ensure durability and longevity.
5. Power Generation: In power plants, these flanges are vital in boilers, superheaters, and other high-temperature equipment, offering reliable service over extended periods.

Price List for Stainless Steel 321 Lap Joint Flanges

Size (NB)	Pressure Class	Price (INR)	Price (USD)
1/2″	150#	₹ 450	$ 5.50
1″	150#	₹ 650	$ 8.00
2″	150#	₹ 1,200	$ 14.75
4″	150#	₹ 2,500	$ 30.75
6″	300#	₹ 5,000	$ 61.50
8″	300#	₹ 8,500	$ 105.00
10″	600#	₹ 14,000	$ 172.50
12″	900#	₹ 22,000	$ 270.00

Note: Prices are subject to market fluctuations and order quantities.

Why Choose Stainless Steel 321 Lap Joint Flanges?

Stainless Steel 321 is a preferred material for flanges because it combines durability with high-temperature performance. The alloy includes titanium, which stabilizes it and prevents chromium carbide formation. This feature is crucial in avoiding intergranular corrosion. Therefore, SS 321 is ideal for use in environments with fluctuating temperatures.

• Corrosion Resistance: SS 321 provides excellent resistance to corrosion from various acids, alkalis, and chlorides. This makes it versatile for numerous applications.
• High-Temperature Strength: The alloy retains its mechanical properties at temperatures up to 800°C (1472°F). This ensures consistent performance in high-heat environments.
• Ease of Fabrication: SS 321 is easy to weld and fabricate. It allows for the construction of complex systems without the risk of sensitization, a concern in other stainless steels.

Chemical Composition of Stainless Steel 321

Element	Content (%)
Carbon (C)	0.08 max
Manganese (Mn)	2.00 max
Silicon (Si)	0.75 max
Phosphorus (P)	0.045 max
Sulfur (S)	0.030 max
Chromium (Cr)	17.00-19.00
Nickel (Ni)	9.00-12.00
Titanium (Ti)	5 x C min

Mechanical Properties of Stainless Steel 321

Property	Value
Tensile Strength	515 MPa min
Yield Strength	205 MPa min
Elongation (%)	40% min
Hardness (Brinell)	217 HB max
Density	8.0 g/cm³
Melting Range	1400°C – 1425°C

Dimension Chart for Stainless Steel 321 Lap Joint Flanges

Nominal Size (NB)	Outside Diameter (OD)	Bolt Circle Diameter	Number of Bolts	Bolt Size	Thickness (T)
1/2″	89 mm	60.3 mm	4	5/8″	11.2 mm
1″	108 mm	79.4 mm	4	5/8″	12.7 mm
2″	152 mm	120.7 mm	4	5/8″	15.9 mm
4″	229 mm	190.5 mm	8	5/8″	19.1 mm
6″	279 mm	241.3 mm	8	3/4″	22.3 mm
8″	343 mm	298.5 mm	8	3/4″	24.0 mm
10″	406 mm	362.0 mm	12	7/8″	25.4 mm
12″	483 mm	431.8 mm	12	7/8″	26.9 mm

Why Sachiya Steel International Should Be Your Supplier

At Sachiya Steel International, we believe in delivering unmatched quality and service. Our Stainless Steel 321 Lap Joint Flanges meet the strict demands of various industries. We focus on innovation, maintaining stringent quality control, and ensuring complete customer satisfaction. Furthermore, our global logistics network guarantees timely delivery and support, no matter where you are. When you choose Sachiya Steel, you choose a partner committed to your success.

Export Countries List for Stainless Steel 321 Lap Joint Flanges

Country	Region
United States	North America
Canada	North America
Germany	Europe
United Kingdom	Europe
France	Europe
Saudi Arabia	Middle East
United Arab Emirates	Middle East
South Korea	Asia
Japan	Asia
Australia	Oceania
Brazil	South America
South Africa	Africa

Contact Us Today for Top-Quality Stainless Steel 321 Lap Joint Flanges

At Sachiya Steel International Private Limited, we provide more than just products—we offer solutions. Our team is ready to assist you in finding the best flanges for your needs. Whether you need standard sizes or custom solutions, we have the expertise to deliver. Contact us today for a tailored quote and experience the superior quality and service that set us apart in the industry.