Stainless Steel Weld Neck Flanges Manufacturer and Supplier In Coimbatore

A key part called a weld neck flange is used in pipe systems. It's joined to the end of a pipe and helps make strong connections that don't leak. This makes it very important for jobs that take place in hot and strong situations, like those found in oil and gas businesses, chemical factories, and power stations. The main difference of a weld neck flange is its long or short neck. This gives extra help and strength to the pipes it connects. The long neck shape has two jobs. First, it reduces stress at the place where materials are joined. This lowers chances of weak spots and makes sure the flange lasts for a long time. Second, it makes it easier to connect things like pipes and valves. This smooth connection is very important for stopping leaks in tough work places where they can cause big problems. Naysha Steel and Alloys knows how important weld neck flanges are in making safe and smooth connections within complicated systems. Our weld neck flanges are made with care. We use high-quality materials to make sure they work really well. Our weld neck flanges are not just used to join pipes and parts, they also come in different sizes to fit the needs of many businesses. You can choose how long or wide you want them and even special flat surfaces to match your project's wants. In smaller sizes, weld neck flanges have a special feature with small openings at the top sides. This design not only makes the flange strong overall but also gives a special solution for situations where there is little space or important design details.

ss weld neck flanges white background hd image

Stainless Steel Weld Neck Flanges Manufacturer And Supplier in Coimbatore

Naysha Steel and Alloys, a company from Mumbai, makes and sells weld neck flanges. They are top in their field. These connectors made of shiny metal are often used in the oil and gas business. They join tubes, handles, and tools at places where they process oil. These are also good for pipes or stages that operate away from land. Weld neck flanges are famous for their strong build, high power and ability to withstand rust, dirt and heat. Naysha Steel and Alloys promises to give you the best products that are better than what you expect. Their flanges are made to be strong and last long. This makes them hard to defeat when it comes to quality and safety. Pick Naysha Steel and Alloys for stainless steel weld neck flanges that are better than what most companies use. This makes sure everything works well, lasts long time, and connects smoothly in all kinds of jobs or businesses.

Benefits of Stainless Steel Weld Neck Flanges

    Weld neck flanges are popular in many industries because they have certain benefits over other flange types. Here are main advantages that show why weld neck flanges are better.

  • 1. High Strength: Stainless steel weld neck flanges are strong and long-lasting. They're good for tough jobs with lots of pressure.
  • 2. Corrosion Resistance: Stainless steel's natural protection from rust keeps the flanges safe from bad chemicals, very hot or cold places, and wearing away by harmful stuff. This makes it work well for a long time.
  • 3. Leak-Proof Design: The long neck and smooth change of weld neck flanges lessens stopping pressure and movement problems. This reduces the possibility of leaks and makes sure a safe connection is made.
  • 4. Easy Installation: Installing weld neck flanges is not hard. You just need basic welding work. This makes the setup easier and saves time when doing upkeep or fixes.
  • 5. Wide Range of Applications: Stainless steel weld neck flanges are strong, won't rust and don't leak. This makes them good for many jobs like in the chemical fields, making energy or working with oil and gas. They also work well on boats.
  • 6. Cost-Effectiveness: Stainless steel weld neck flanges might cost more at first but they last long and need little maintenance.
  • 7. Compliance with Standards: Stainless steel weld neck flanges are made to fit with many rules in different industries. This makes them good quality and trustworthy for use with various pipes systems.

ASME B16.5 Weld Neck Flanges: ANSI 150# weld neck flanges and ANSI 300# weld neck flanges Manufacturer, Stainless Steel Class 304 weld neck flanges and Stainless Steel 316 weldneck Manufacturer And Dealer In Coimbatore

Naysha Steel and Alloys makes strong, dependable weld neck flanges that work really well. Our flange pieces come in many different materials like stainless steel, carbon steel, copper or other mixes. We also use hastelloy to make them stronger and resist more for big tasks. Weld neck flanges are very important for many jobs in industries. They make sure pipes are well-connected and don't leak. Stainless steel Weld Neck Flanges come in second only to pipe and valves in importance for the piping system. For flanges, they are also done carefully, using stainless steel of top qualities, 304 and 316 being the common ones. The Weld Neck Flange type from ASTM A182 is certainly noteworthy -- thanks to its austenitic super material with low carbon content, it is considered ideal for corrosion resistance. They are good for tough jobs in areas like oil, gas, chemicals and making power. In the next part, you will find out what makes weld neck flanges special and why they are good choices. We will also give you useful tips on how to set up and take care of them without any cost for our customers.

Naysha Steel and Alloys is dedicated to giving good flanges that match what our customers need. We use modern tools and technology to make accurate, reliable, and strong flanges. Naysha Steel and Alloys is a famous maker of strong weld neck flanges in Coimbatore, India. Our business deals with all sorts of stainless steel flanges. These are very important for the oil and gas industry. We help connect pipes, valves and other things for oil refineries and other places with our SS Weld neck Flanges. Furthermore, these flanges are very helpful for jobs at sea that involve pipes and stages. We make them adjustable even in far-off places that don't have easy access to shoreline services.

SS WeldNeck Flanges Types

Sizes and Availablity of Stainless Steel weld neck flanges in our Coimbatore shop:

Nominal Size Outside Diameter
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)
12 3.50 0.38 1.38 4 0.62 2.38 0.88 0.62 1.19 0.84 0.56 1.81
34 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
114 4.62 0.56 2.50 4 0.62 3.50 1.70 1.38 2.31 1.66 0.75 2.19
112 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
212 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
312 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

ASME B16.5, SS 304 and SS 316, ANSI Class 150 and ANSI 300# Weld Neck Flanges Availablity In Coimbatore

ss weld neck flanges manufacturer

Weld neck flanges are carefully made to join things together with welding. This makes a strong and long-lasting link that keeps its strength over time. The special weld neck design makes joining pipes easier, greatly reducing the chance of fluids leaking out. This design makes things stronger and also less likely to have problems during work because there could be fluid leaks. Naysha Steel and Alloys is a top provider because it offers more than regular flange sizes. We have a big stock of weld neck flanges made from stainless steel, Hastelloy and nickel alloy steel.

These include great features like Inconel materials to give strong strength. These materials are picked very carefully because they last a long time and are sure to work, making them perfect for engineering jobs that require lots of pressure or heat. Oil and gas, petrochemical, and marine companies need strong links that our flanges are great for. They work well in tough places making sure smooth operations. At Naysha Steel and Alloys, we are happy to give a complete selection of weld neck flanges for many uses in different fields. Our necks include regular, long and short designs.

They also have big hub connectors and reducing sizes to suit lots of project needs. If you want regular answers or special choices, Naysha Steel and Alloys has the knowledge to meet your one-of-a-kind neck flange needs. Naysha Steel and Alloys wants to make a product that stays strong in hot or high pressure situations, and can stick really well for important jobs. Our weld neck flanges are carefully made to handle very hard situations. This keeps them working well and lasting a long time.

Simple diagram to Understand of Weld Neck Flange Dimensions

SS Weld Neck Flanges Dimensions

Weld neck flanges are metal rings used to join pipes, valves and other tools in different fields. They have a long, pointed center part that fits the thickness and size of the pipe. This makes a good and watertight link that can hold up under high pressure and heat. Naysha Steel and Alloys is a good company that gives lots of stainless steel weld neck flanges for different uses. You can get the correct size for your project, it can be 1/2" inches up to 80" + inches or more if needed. Our collection has all the sizes and details you need to make a good decision. Stainless steel weld neck flanges are made with strong stuff. They last a long time, don't rust easily and can handle heat well. We use new tech and tools to makes accurate and trustworthy flanges that meet top standards. Naysha Steel and Alloys made stainless steel weld neck flanges for tough places. They can handle hard situations easily. They are perfect for important tasks that need lasting and perfect operation.

Along with the factors mentioned earlier, some other things to think about when picking a weld neck flange are what material it is made from, how much pressure it can take and the temperature that's okay for using. You should talk to our professional engineer about finding the right flange for your job.

Stainless Steel Weld Neck Flange Chemical Composition Table

Grade/ Marked Symbol Carbon (Max) Manganese (max) Silicon (maximum) Phosphorus (max) Sulfur (max) Chromium Molybdenum Nickel N
F304 0.08 2 0.75 0.045 0.030 18-20 - 8-11 -
F304L 0.035 2 1.00 0.045 0.030 18-20 - 8-13 -
F316 0.08 2 0.75 0.045 0.030 16-18 2-3 10-14 64.845
F316L 0.035 2 1.00 0.045 0.030 16-18 2-3 10-14 68.89


SS Weld Neck Flanges Price List in Coimbatore

WNRF FLANGES ASTM A182 F304 B16.5 150# SCH-40S Price
15mm 0.54 543.95 591.25 8.242 8.958 5.551 6.033 9.890 10.750
20mm 0.78 854.45 928.75 12.946 14.072 8.719 9.477 15.535 16.886
25mm 1.12 1009.70 1097.50 15.298 16.629 10.303 11.199 18.358 19.955
32mm 1.47 1179.90 1282.50 17.877 19.432 12.040 13.087 21.453 23.318
40mm 1.90 1475.45 1603.75 22.355 24.299 15.056 16.365 26.826 29.159
50mm 2.77 1707.75 1856.25 25.875 28.125 17.426 18.941 31.050 33.750
65mm 4.49 2717.45 2953.75 41.173 44.754 27.729 30.140 49.408 53.705
80MM 5.44 3105.00 3375.00 47.045 51.136 31.684 34.439 56.455 61.364
100mm 7.69 4347.00 4725.00 65.864 71.591 44.357 48.214 79.036 85.909
125mm 9.40 7452.00 8100.00 112.909 122.727 76.041 82.653 135.491 147.273
150mm 11.82 9315.00 10125.00 141.136 153.409 95.051 103.316 169.364 184.091
200mm 19.11 13972.50 15187.50 211.705 230.114 142.577 154.974 254.045 276.136
250mm 26.19 18630.00 20250.00 282.273 306.818 190.102 206.633 338.727 368.182


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SS Flange Welding Neck ANSI 150, IS6392 Weld Neck Flanges, Weld Neck Stainless Steel Flanges Manufacturer, UNS S31803 Weld Neck Flanges Stockist, UNS S31803 Weld Neck Flanges Manufacturers, UNS S31803 Weld Neck Flanges Exporter, UNS S32205 Weld Neck Flanges Stockist : Grades & Classes (#)

  • ASTM A182 F304/F304L: Standard austenitic stainless steel grade.
  • ASTM A182 F347/F347H: Stabilized stainless steel grade with niobium addition.
  • ASTM A182 F321/F321H: Stabilized stainless steel grade with titanium addition.
  • ASTM A182 F316/F316L: Austenitic stainless steel with enhanced corrosion resistance.
  • ASTM A182 F53: Super duplex stainless steel grade with excellent corrosion resistance.
  • Class 125: Class 125 Weld Neck Flange suitable for aggressive conditions.
  • Class 150: Weld neck flange design for low-pressure applications.
  • ASTM A182 F51: Duplex stainless steel grade with high strength and corrosion resistance.
  • Class 600: Weld Neck Flange Class 600 designed for high-pressure applications.
  • Class 300: Flanges suitable for moderate-pressure applications.

SS Flange Welding Neck 150, 18 300 Class SCH 80 Weld Neck Flange, 150# Weld Neck Flange SCH 80, Welding Neck Flanges SCH 40, SS Weld Neck Flanges Specifications

Specification Of : Weld Neck Stainless Steel Flanges
JIS Standards 5K, 10K, 40K, 16K 20K 30K, 63K
Size Of Bore Diameter Flange NPS ≤ 10
Manufacturer Of Standard Dimensions EN-1092 Flange, ASME B16.48 Flange, API605 Flange, BS4504 Flange, EN1092 Flange, UNI Flange, ISO Flange, API7S-43 Flange, ANSI/ASME B16.5 Flange, API7S-15 Flange, MSS S44 Flange, IS 2062 Flange, ASME B16.36 Flange, DIN Flange, AWWA C207 Flange, B16.47 Series A & B Flange, BS1560-3.1 Flange, ISO70051 Flange, API Flange, ASME Code for 12 inches Welding Neck Flanges.
Minimum Pressure 150# To 2500#
Flange Face Type Raised Face, Groove And Small Tongue Groove, RTJ, Weld Neck Flanges Flat Face, Large Tongue & Large Male-Female And Small Male-Female, Lap-Joint Face.
Top Six Type Of Flanges Threaded, Lap Joint, Socket-Weld, Blind, Slip-On or Weld Neck Flanges
Standard Materials Duplex Steel & Super Duplex Steel, Copper Nickel, Wrought Iron, Inconel, Mild Steel, Stainless Steel, Hastelloy, Cast Iron, Alloy Steel, Carbon Steel.
Thickness Length NPS ≤ 18
Welding neck flanges size (1/2") To (48")
Manufacturing Process Forged/ Machined/ Heat Treated
Other Type Of Flange Forged/ Plate/ Threaded
Application Oil And Gas Industry Power Plants Industry Food Processing And Manufacturing Waterworks Systems Fossil Fuel Power Plants Nuclear Power Application Municipal Pipe Systems


Please find below our other manufacturing and Sales network near Coimbatore, Tamil Nadu: (Contact us for detailed information for your nearest branches)

  • Stainless Steel Weld Neck Flanges manufacturer and contractor in Chennai, Tamil Nadu
  • Stainless Steel Weld Neck Flanges manufacturer and supplier in Hosur, Tamil Nadu
  • Stainless Steel Weld Neck Flanges manufacturer and stockists in tiruchirapalli, Tamil Nadu
  • Stainless Steel Weld Neck Flanges manufacturer and dealer in Madurai, Tamil Nadu
  • Stainless Steel Weld Neck Flanges manufacturer and warehousing in Salem, Tamil Nadu
  • Stainless Steel Weld Neck Flanges manufacturer and wholesalor in Tirunelveli, Vellore, Erode and Tuticorin

Frequently Asked Questions

What is a stainless steel weldneck flange?

A stainless steel weldneck flange is a type of pipe flange designed to be welded onto the neck of a pipe. It provides a smooth, high-strength connection for joining pipes, valves, and other equipment.

What types of stainless steel material grades are used for weldneck flanges?

Common stainless steel materials include 304, 316, and 321, among others. The choice of stainless steel grade depends on the specific application and the required corrosion resistance.

What sizes are available for stainless steel weldneck flanges?

Stainless steel weldneck flanges are available in a wide range of sizes, typically ranging from 1/2 inch to several feet in diameter. The size you need depends on your specific piping system requirements. All the standard Flange dimensional sizes are Readily available at any Naysha Steel branch in Coimbatore city in Tamil Nadu.

Can stainless steel weldneck flanges be used with other pipes?

Yes, stainless steel weldneck flanges can be used with pipes made of other materials, provided the flange material is compatible with the pipe material, and the connection is properly sealed.

Industries served by Stainless Steel Weld Neck Flanges In Coimbatore

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 gas manufacturer
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 manufacturer supplier
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.

chemical flanges
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