Alloy Steel Weld Neck Flanges Manufacturer and Supplier In India
Naysha Steel is a leading manufacturer and supplier of Alloy Steel Weld Neck Flanges in Mumbai, India. With a strong commitment to quality and customer satisfaction, they offer a wide range of flanges that are known for their durability and precision engineering. Their products are manufactured using high-grade alloy steel, ensuring excellent strength and resistance to corrosion. With a team of skilled professionals and state-of-the-art facilities, Naysha Steel delivers reliable flanges that meet international standards. Whether for industrial applications or construction projects, Naysha Steel is a trusted choice for Alloy Steel Flanges in India.
Types of Alloy Steel Weld Neck Flanges
This is the most common type of weld neck flange. It features a tapered hub and a neck that is welded to the pipe, providing a smooth transition from the flange to the pipe. Standard weld neck flanges are suitable for high-pressure and high-temperature applications. Long weld neck flanges have an extended neck length, which provides additional reinforcement and allows for easier alignment of the pipe.
- Standard Weld Neck Flange (WNRF): This is the most widely used type of weld neck flange.
- Long Weld Neck Flange (LWN): Long weld neck flanges have an extended neck length, which offers better stress distribution and allows for easy alignment of the pipe.
- Slip-On Weld Neck Flange (SOWN): Slip-on weld neck flanges combine the features of slip-on and weld neck flanges.
- Socket Weld Weld Neck Flange (SWWN): Socket weld weld neck flanges have a socket-type end that accommodates the pipe for welding, providing a strong and leak-proof connection.
- Orifice Weld Neck Flange: Orifice weld neck flanges are designed specifically for orifice metering applications.
Features of Alloy Steel Weld Neck Flanges
- weld neck alloy flanges are designed for welding to the pipe, providing a secure and leak-free connection. They have a beveled neck that allows for a smooth transition and effective weld penetration.
- These flanges are made from high-quality Alloy Steel , which offer excellent strength, durability, and resistance to corrosion, oxidation, and abrasion. They are capable of withstanding high-pressure and high-temperature conditions.
- The neck and hub design of weld neck flanges provide added reinforcement and stability, making them suitable for applications with elevated pressure ratings.
- weld neck alloy flanges are designed to ensure easy alignment during installation.
- These flanges are widely used across industries, including oil and gas, chemical processing, power generation, water treatment, food and beverage, and more.
Size of
Alloy Steel Weld Neck Flanges
| Nominal Size |
Outside Diameter
(OD) |
Min. Thickness
(T) |
RF Dia.
(R) |
No. of Bolt Holes |
Diameter of Holes |
Bolt Circle
(BC) |
SO Bore ID
(SB) |
WN Bore ID
(WB) |
Dia. Hub Base
(HB) |
Dia. of Hub Top
(HT) |
SO LTH
(SL) |
WN LTH
(WL) |
| 1⁄2 |
3.50 |
0.38 |
1.38 |
4 |
0.62 |
2.38 |
0.88 |
0.62 |
1.19 |
0.84 |
0.56 |
1.81 |
| 3⁄4 |
3.88 |
0.44 |
1.69 |
4 |
0.62 |
2.75 |
1.09 |
0.82 |
1.50 |
1.05 |
0.56 |
2.00 |
| 1 |
4.25 |
0.50 |
2.00 |
4 |
0.62 |
3.12 |
1.36 |
1.05 |
1.94 |
1.32 |
0.62 |
2.12 |
| 11⁄4 |
4.62 |
0.56 |
2.50 |
4 |
0.62 |
3.50 |
1.70 |
1.38 |
2.31 |
1.66 |
0.75 |
2.19 |
| 11⁄2 |
5.00 |
0.62 |
2.88 |
4 |
0.62 |
3.88 |
1.95 |
1.61 |
2.56 |
1.90 |
0.81 |
2.38 |
| 2 |
6.00 |
0.69 |
3.62 |
4 |
0.75 |
4.75 |
2.44 |
2.07 |
3.06 |
2.38 |
0.94 |
2.44 |
| 21⁄2 |
7.00 |
0.81 |
4.12 |
4 |
0.75 |
5.50 |
2.94 |
2.47 |
3.56 |
2.88 |
1.06 |
2.69 |
| 3 |
7.50 |
0.88 |
5.00 |
4 |
0.75 |
6.00 |
3.57 |
3.07 |
4.25 |
3.50 |
1.12 |
2.69 |
| 31⁄2 |
8.50 |
0.88 |
5.50 |
8 |
0.75 |
7.00 |
4.07 |
3.55 |
4.81 |
4.00 |
1.19 |
2.75 |
| 4 |
9.00 |
0.88 |
6.19 |
8 |
0.75 |
7.50 |
4.57 |
4.03 |
5.31 |
4.50 |
1.25 |
2.94 |
| 5 |
10.00 |
0.88 |
7.31 |
8 |
0.88 |
8.50 |
5.66 |
5.05 |
6.44 |
5.56 |
1.38 |
3.44 |
| 6 |
11.00 |
0.94 |
8.50 |
8 |
0.88 |
9.50 |
6.72 |
6.07 |
7.56 |
6.63 |
1.50 |
3.44 |
| 8 |
13.50 |
1.06 |
10.62 |
8 |
0.88 |
11.75 |
8.72 |
7.98 |
9.69 |
8.63 |
1.69 |
3.94 |
| 10 |
16.00 |
1.12 |
12.75 |
12 |
1.00 |
14.25 |
10.88 |
10.02 |
12.00 |
10.75 |
1.88 |
3.94 |
| 12 |
19.00 |
1.19 |
15.00 |
12 |
1.00 |
17.00 |
12.88 |
12.00 |
14.38 |
12.75 |
2.12 |
4.44 |
| 14 |
21.00 |
1.31 |
16.25 |
12 |
1.12 |
18.75 |
14.14 |
13.25 |
15.75 |
14.00 |
2.19 |
4.94 |
| 16 |
23.50 |
1.38 |
18.50 |
16 |
1.12 |
21.25 |
16.16 |
15.25 |
18.00 |
16.00 |
2.44 |
4.94 |
| 18 |
25.00 |
1.50 |
21.00 |
16 |
1.25 |
22.75 |
18.18 |
17.25 |
19.88 |
18.00 |
2.62 |
5.44 |
| 20 |
27.50 |
1.62 |
23.00 |
20 |
1.25 |
25.00 |
20.20 |
19.25 |
22.00 |
20.00 |
2.81 |
5.62 |
| 22 |
29.50 |
1.75 |
25.25 |
20 |
1.38 |
27.25 |
22.22 |
21.25 |
24.25 |
22.00 |
3.07 |
5.82 |
| 24 |
32.00 |
1.81 |
27.25 |
20 |
1.38 |
29.50 |
24.25 |
23.25 |
26.12 |
24.00 |
3.19 |
5.94 |
Uses of Alloy Steel Weld Neck Flanges
Weld neck alloy flanges are widely employed in the oil and gas sector for pipeline connections, flow control, and pressure regulation. They are used in refineries, offshore platforms, and petrochemical plants to ensure secure and leak-free connections for transporting oil, gas, and other hydrocarbon fluids. In chemical plants, weld neck flanges are crucial components for connecting pipelines that handle corrosive chemicals, acids, and solvents.
Quality of Alloy Steel Weld Neck Flanges
High-quality alloys are chosen for weld neck flanges due to their superior properties, including corrosion resistance, durability, and strength. These alloys are carefully selected to withstand the specific conditions of the application, such as high temperatures, aggressive chemicals, or corrosive environments. The production of weld neck alloy flanges adheres to recognized industry standards and specifications, such as ANSI/ASME B16.5 or other applicable standards.
Alloy Steel Weld Neck Flanges Manufacturer : Grades & Classes
- ASTM A182 F1
- ASTM A182 F5
- ASTM A182 F9
- ASTM A182 F11
- ASTM A182 F22
- ASTM A182 F91
- Class 150
- Class 300
- Class 600
- Class 900
- Class 1500
- Class 2500
Please find below our manufacturing and Sales network below: (Contact us for detailed information for your nearest branches)
- Alloy Steel Weld Neck Flanges manufacturer and contractor in Hyderabad
- Alloy Steel Weld Neck Flanges manufacturer and supplier in Chennai
- Alloy Steel Weld Neck Flanges manufacturer and stockists in Pune
- Alloy Steel Weld Neck Flanges manufacturer and dealer in Faridabad
- Alloy Steel Weld Neck Flanges manufacturer and warehousing in Chandigarh
- Alloy Steel Weld Neck Flanges manufacturer and wholesalor in Delhi
- Alloy Steel Weld Neck Flanges manufacturer and trader in Coimbatore
- Alloy Steel Weld Neck Flanges manufacturer and stockholder in Bangalore
Industries served by Alloy Steel Weld Neck Flanges
In the oil and gas industry, blind Alloy Steel flanges are used in pipelines, storage tanks, and offshore platforms. They are employed for closing off openings during maintenance, repair, or when a branch connection is not required. Petrochemical plants utilize blind Alloy Steel flanges in equipment such as reactors, distillation columns, and storage vessels. These flanges provide a secure and leak-proof seal when closing off unused openings or isolating sections of the process.
Oil and Gas Industries
The oil and gas industry includes a wide range of from drilling and
production to refining and marketing. Some of the major players in this
include oil and gas companies, service providers, equipment.
Petroleum Industries
In the drilling process, stainless steel is used to make drill bits, pipes, and other
equipment that must withstand high pressures and temperatures. Stainless steel is
also used to make pumps, valves, and fittings for the transportation.
Shipbuilding in India
In storage applications, stainless steel is used to make tanks and containers that
can safely store corrosive and hazardous chemicals. It is also used in piping
systems for chemical transfer and distribution chemical industry.
Marking & Pricing
Products are packaged to ensure that there is no damage during of goods transport. In case of exports, standard export packaging is done with utmost care in wooden covering or boxing. All products are marked with Grade, Lot No, Size, Degree and our trade mark. On special requests we can also, make
customized marking on our products.
Quality Assurance
At Naysha Steel, all fittings and flanges are subject to strict inspection at each and every stage of the production process, from starting material
purchasing to product dispatch. They are visually examined for compliance to ASTM, ASME, MSS, DIN, EN, and JIS codes and standards.
Upon request, official certified Inspection Agencies can be called in to witness the material reports, dimensions and quality compliance
of products.
Test Certificates: Manufacturer Test Certificate as per EN 10204 / 3.1B Raw Materials Certificate, 100% Radiography Test Report, Third
Party Inspection Report
