Stainless Steel 321 Weld Neck Flange Manufacturers in India – Sachiya Steel International Private Limited

Sachiya Steel International Private Limited is India’s leading manufacturer, supplier, and exporter of high-quality Stainless Steel 321 Weld Neck Flanges. As a renowned company in the industry, we pride ourselves on delivering top-notch flanges that meet international standards. Stainless Steel 321 Weld Neck Flanges are known for their superior strength, resistance to corrosion, and excellent durability, making them an ideal choice for various industrial applications. Our commitment to quality, innovation, and customer satisfaction has established us as the preferred choice for clients across the globe.

Why Choose Stainless Steel 321 Weld Neck Flanges?

Stainless Steel 321 Weld Neck Flanges are crafted from a stabilized grade of stainless steel, which is particularly designed to offer enhanced resistance to intergranular corrosion. This makes them a perfect choice for applications that require high-temperature strength and resistance to chemical attack. With its superior mechanical properties, Stainless Steel 321 provides excellent toughness, even at cryogenic temperatures. The addition of titanium as a stabilizing element helps to prevent carbide precipitation during welding, making these flanges ideal for high-temperature service up to 1500°F (816°C).

Specifications of Stainless Steel 321 Weld Neck Flange

Specification	Details
Standard	ASTM A182, ASME SA182
Size Range	1/2″ NB to 48″ NB
Pressure Class	150#, 300#, 600#, 900#, 1500#, 2500#
Type	Weld Neck Flange
Material	Stainless Steel 321
Dimensions	ANSI/ASME B16.5, B16.47, DIN, EN, JIS, GOST
Face Type	Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)
Flange Face Finish	Serrated, Smooth, Spiral Serrated
Applications	Oil & Gas, Petrochemical, Power Generation, Water Treatment, etc.

Key Applications of Stainless Steel 321 Weld Neck Flanges

Our Stainless Steel 321 Weld Neck Flanges are widely used across various industries, including the oil and gas sector, petrochemical plants, power generation facilities, and water treatment systems. Their excellent strength-to-weight ratio makes them suitable for high-pressure applications, while their resistance to cracking, pitting, and crevice corrosion ensures long-term reliability. Additionally, these flanges can handle fluctuating temperatures and pressures, making them a preferred choice in the chemical and marine industries.

Chemical Composition of Stainless Steel 321

Element	Composition (%)
Carbon (C)	0.08 max
Manganese (Mn)	2.00 max
Silicon (Si)	0.75 max
Chromium (Cr)	17.00 – 19.00
Nickel (Ni)	9.00 – 12.00
Phosphorus (P)	0.045 max
Sulfur (S)	0.03 max
Titanium (Ti)	5 x (C+N) to 0.70 max

Mechanical Properties of Stainless Steel 321

Property	Value
Tensile Strength	515 MPa min
Yield Strength (0.2% Offset)	205 MPa min
Elongation	40% min
Hardness, Brinell (HB)	217 max

Benefits of Using Stainless Steel 321 Weld Neck Flanges

Stainless Steel 321 Weld Neck Flanges offer several benefits that enhance their performance and longevity in demanding applications. They are highly resistant to oxidation and scaling, even at elevated temperatures. These flanges also provide excellent resistance to stress corrosion cracking, making them suitable for use in environments where chloride exposure is a concern. The weld neck design of these flanges offers a smooth transition from the flange thickness to the pipe wall thickness, which reduces stress concentration and ensures a robust connection.

Price List for Stainless Steel 321 Weld Neck Flanges

At Sachiya Steel International, we offer competitive pricing for our Stainless Steel 321 Weld Neck Flanges. Our flanges are available in various sizes to meet the diverse needs of our customers. Below is a detailed price list for different sizes:

Size (inches)	Price (INR)	Price (USD)
1/2″	450	6.00
3/4″	550	7.50
1″	700	9.50
1 1/2″	900	12.00
2″	1,150	15.50
2 1/2″	1,400	18.50
3″	1,800	23.50
4″	2,400	31.50
6″	3,500	45.50
8″	5,000	65.00
10″	6,800	88.50
12″	8,900	116.00
14″	10,500	137.50
16″	13,000	170.00
18″	15,500	203.00
20″	18,000	235.00
24″	22,000	286.00
30″	30,000	390.00
36″	38,000	495.00
42″	47,000	610.00
48″	58,000	755.00

Importance of Dimension and Design in Stainless Steel 321 Weld Neck Flanges

The dimensions and design of Stainless Steel 321 Weld Neck Flanges are critical factors that influence their performance. Proper dimensions ensure a tight fit, reducing the risk of leaks and enhancing the integrity of the connection. The raised face design, often used in these flanges, provides a smooth, flat surface that allows for better sealing with gaskets, thus improving the overall durability and reliability of the piping system.

Dimensions Chart for Stainless Steel 321 Weld Neck Flanges

Nominal Pipe Size (NPS)	Outer Diameter (OD)	Thickness (t)	Raised Face Height (h)	Bore Diameter (B)	Bolt Circle Diameter (BC)	No. of Bolts	Bolt Size
1/2″	89	11.2	1.6	15	60	4	M12
3/4″	98	13.4	1.6	20	70	4	M12
1″	108	14.6	1.6	25	79	4	M12
1 1/2″	127	16.8	1.6	38	98	4	M16
2″	152	18.0	1.6	51	120	4	M16
2 1/2″	178	19.2	1.6	64	140	4	M16
3″	190	20.4	1.6	76	152	4	M16
4″	229	22.2	1.6	102	191	8	M16
6″	279	25.4	1.6	152	241	8	M20
8″	343	28.6	1.6	203	298	8	M24
10″	406	30.0	1.6	254	362	12	M24
12″	483	32.2	1.6	305	432	12	M27
14″	533	35.4	1.6	356	489	12	M30
16″	597	38.0	1.6	406	552	16	M30
18″	635	41.2	1.6	457	610	16	M33
20″	699	44.0	1.6	508	673	20	M33
24″	813	48.2	1.6	610	787	20	M36
30″	991	52.6	1.6	762	978	28	M39
36″	1219	57.2	1.6	914	1206	32	M42
42″	1346	60.4	1.6	1067	1333	36	M45
48″	1473	64.2	1.6	1219	1460	44	M48

Global Reach of Sachiya Steel International

At Sachiya Steel International Private Limited, we are committed to meeting the needs of our clients worldwide. Our Stainless Steel 321 Weld Neck Flanges are in demand across various countries, thanks to their reliability and our reputation for excellent customer service. We supply our products to a wide range of countries, ensuring timely delivery and competitive pricing to our global clientele.

Countries We Supply Stainless Steel 321 Weld Neck Flanges

Continent	Countries
North America	USA, Canada, Mexico
South America	Brazil, Argentina, Chile
Europe	Germany, UK, France, Italy, Spain, Netherlands
Asia	India, China, Japan, South Korea, UAE, Saudi Arabia
Africa	South Africa, Nigeria, Egypt
Australia	Australia, New Zealand
Middle East	Qatar, Oman, Kuwait, Bahrain

Why Choose Sachiya Steel International for Your Flange Needs?

At Sachiya Steel International, we focus on quality, precision, and customer satisfaction. Our Stainless Steel 321 Weld Neck Flanges undergo stringent quality checks and are manufactured using the latest technology to ensure they meet international standards. Whether you require standard sizes or custom-made solutions, our team is ready to assist you with tailored services that cater to your specific needs.

Contact us today for more information or to place an order, and experience the unmatched quality and service of Sachiya Steel International!