Stainless Steel SS 304 400 Class Flanges Manufacturer And Supplier In Mumbai, India

Naysha Steel alloy which is the well-known manufacturer and supplier of Stainless Steel SS 304 400 Class Flanges in Mumbai India. Our company is distinguished among the other manufacturers as the producer of the first-class flanges of exceptional quality, fully compliant with industry standards and customer demands. SS 304 flanges are employed in many situations because of their great anti-corrosion property, toughness, and varied application. Our advanced manufacturing facilities, along with a highly skilled workforce, enable us to provide accurate machining and outstanding quality control that culminates in providing our clients with top quality products. When you require the standard or custom-made flanges, you come to Naysha Steel as your trustworthy partner for sourcing premium SS 304 400 Class Flanges in Mumbai, India. Work with us when all products are of top quality in conjunction with exceptional services.

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SS 304 400 Class Flanges Manufacturer And Supplier In Mumbai, India

Naysha Steel Alloy, a recognized entity for manufacturing and supply located in Mumbai, India, serve customers with the superior SS 304 400 Class Flanges which are vital for various industrial uses. Our flanges are all quality products that are kept to the highest standards of reliability and durability across a variety of applications. SS304 Flanges exhibits precision in the way they are made; hence, they offer outstanding corrosion resistance, which suitably makes them good for challenging environments. By adhering to quality standard, Naysha Steel Alloy gives top-notch products and a pleasant customer experience. Be assured to receive 304SS 400 Class Flanges that are as required by you and made of the best quality that will take your operation to a whole new level. 400Words Connect with us now! We deliver truly top quality and dependable flanges.

Countless Benefits of SS 304 400 Class Flanges, 400# SS 304 Flange:

    The SS 304 400 Class Flanges are associated with so many advantages as same to the other types of flanges. Take a look for the key benefits of stainless steel weld neck flanges.

  • Easy Installation: SS 304 400 Class Flanges are implemented to provide an easy to mount technique with standardized parameters and the push-on bolt connection procedure. Thereby, the installation process is streamlined, eliminating the time and labor costs.
  • Leak-Proof Design: Similarly, the added precision and lack of any tolerance that is needed with SS 304 400 Class Flanges guarantee a tight, secure, and leak-free seal between pipes or fittings. This prevents downtimes that may be quite costly thereby reducing maintenance costs and minimizing maintenance sessions.
  • Corrosion Resistance: SS 304 according to 400 Class Flanges are produced from high quality stainless steel that gives superb resistance to chemical corrosion from moisture and aggressive environments. The life of the flanges is prolonged, and the complete system operates in an undisturbed mode as time passes.
  • High Strength: Because of their resists and materials of maximum impact, the SS 304 400 Class Flanges ensure structural integrity and long service life in harsh conditions. They can work out under high-pressure conditions while at the same time assuring safety and top-notch performance.
  • Wide Range of Applications: Class Flanges A182 400 are capable of being used in a number of industrial and commercial applications owing to the fact that they are a versatile setup. The flanges, which are effective in a range of environments, including petrochemical plants, as well as food processing operations, deliver dependable performance.

SS 304 400 Class Flanges, 400 Class Flanges, SS 304 400# Flanges, Stainless Steel 304 Flanges, Manufacturer And Supplier In Mumbai, India

Naysha Steel, a manufacturer, supplier, and brand of premium SS304 400 Class Flanges in Mumbai, India. Our wide range includes four hundred classes of premium grade type "AISI 304" Stainless steel flanges that are known for high resistance to corrosion and wear. At Naysha Steel we remain quality first by checking that every flange conforms to the accuracy and specifications of highest quality. The SS 304 400# Flanges that we manufacture are flawlessly created to provide perfect functioning, reliability, and optimum durability that can facilitate use in numerous industrial applications. Being the preeminent manufacturer and supplier, Naysha Steel performs a key role in providing an expansive range of Stainless Steel 304 Flanges that are relevant to different project mandates. These ranges of flanges include slip-on, blind, welding neck, and socket weld flanges.

Our machines are based in our highly advanced manufacturing facilities and we have a team of really skilled professionals who work round the clock to ensure that every product we deal in is of excellent quality. Our zeal to customer satisfaction encourages us to offer timely and effective services immediate response is guaranteed for clients guaranteeing a seamless purchasing experience. Using Naysha Steel will get you the best of class SS 304 400 Flanges in unmatched quality, reliability and affordability. Trust us as your door opener for advanced and innovative products and services that will definitely meet your satisfaction. Please don't hesitate to contact our specialists for more detailed information concerning your requirements and to benefit from our experience in stainless steel flange products.

Class 400 ss 304 flanges

Stainless Steel 304 400 Class Flanges, SS 304 400 Class Flanges Size In Mumbai, India shop:

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)
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

Stainless Steel 304, ANSI Class 400 Flanges, 400# Flanges, Class 400 SS Flange Available In Mumbai, India

Class 400 ss flanges manufacturer

Stainless steel ANSI Class 400 304 Flanges, most popularly known as 400# Flanges, is a specific type of industrial component that is widely recognized for being durable and multi-functional in different industries. The Class 400 SS Flanges were made to stand up to the stresses of high pressure environments. This product is an essential component of piping systems that supplies dependable sealing and connection. In Mumbai, India, these firms produce flanges that are readily accessible offering the local industries on the spot availability of top ranked stainless steel components. The use of Stainless Steel 304 definitively leads to greater corrosion resistance, so these flanges are well suited for applications in chemically corrosive environments including chemical processing, marine and oil and gas industries.

The ANSI Class 400 rating, which means the flanges pressure rating, states that they can have a pressure up to and including 400 pounds per square inch (psi), hence making them good for high-pressure working systems. The classifier makes the system to function perfectly when subjected to tough operating situations. This Class 400 SS Flanges come in different styles such as welding neck, slip on, threaded, blind and socket weld flanges, giving you a choice to pick the one accordingly fitting your needs and specifications. All flangeg undergo rigorous examination compliant with industry standards and specifications, hence, reliability and durability are guaranteed.

By manufacturing the high quality flanges within the local boundaries, customers in Mumbai, India, enjoy the advantage on reducing the delivery times and logistic costs involved in sourcing materials from distant places. Due to their outstanding mechanical properties as well as corrosion resistance, Stainless Steel 304 ANSI Class 400 Flanges are deemed as the most suitable components for essential piping applications ensuring ultimate performance and longevity in a wide variety of industrial settings. Trust in these Class 400# Flanges to do good job for your project easily and effectively is something you can count on.

Understand Dimensions of Stainless Steel 304 400 Class Flange Dimensions To Simple diagram

Stainless Steel 304 400 Class Flange is a very obvious part of the piping system, allowing connecting of sections of the pipe, valves and other equipments. The dimensions of these flanges implication is that proper fitting and reversibility within the system is achieved. When we talk about the dimensions of a Stainless Steel SS304/400 Class Flange we refer to the corresponding norms (ASME B16.5 and ASTM A182) prescribed in the standard industrial specifications. These specifications encompass the nominal pipe sizes, flange thickness, hole spacing and bolt circle diameter.

SS 304 Flanges manufactuere, supplier

A diagram as easy as possible can indicate the dimensions of Stainless Steel 304 400 Class Flange alongside major part of it. The illustration often bears indications for these key dimensions like outer diameter (OD), inner diameter (ID), bolt hole diameter, bolt circle diameter, thickness of the flange, and overall height. Through inclusion of a simple diagram which is clear it shows dimensions of Stainless Steel 304 400 Class Flanges the engineers, fabricators and installers can make a right choice among flanges or install the flanges exactly and have things running smoothly, safely and reliably.

For example, the diameter outside is the measure of the part with the most width, whereas the inner diameter is the measure of the diameter of the interval, where the pipe should be put inside. The diameter of bolt holes and the distance between bolts (the bolt circle diameter) indicate how the flanges are aligned and fasted, which are crucial for accurate and reliable fastening. The flange thickness and overall height as well as the piping system structural integrity and angular clearances need to be also considered which directly affect the piping system structural integrity and clearance requirements.

Class 400 SS 304 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 304 400 Class flanges Price List in Mumbai, India: Valid From 1st March 2024

Take a better look on price list of stainless steel and weld neck flanges in Mumbai, India

SS 304 400 Class flanges 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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Stainless Steel Flanges, SS 304 400 Class Flanges Manufacturer, Class 400 SS 304 Flanges Manufacturer, 400# SS 304 Flanges Manufacturer, UNS S31803 Weld Neck Flanges Stockist, UNS S31803 Flanges Manufacturers, UNS S31803 Flanges Exporter, UNS S32205 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 304 Flange 400, 400# SS 304 Flanges, Stainless Steel 304 400 Class 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 in India : (Contact us for detailed information for your nearest branches)

  • Stainless Steel 304 400 Class flanges manufacturer and Manufacturer in Mumbai, India.
  • Stainless Steel 304 400 Class flanges manufacturer and supplier in Nagpur, India.
  • Stainless Steel 304 400 Class flanges manufacturer and stockists in Pune, India.
  • Stainless Steel 304 400 Class flanges manufacturer and Exporter in Thane, India.
  • Stainless Steel 304 400 Class flanges manufacturer and wholesalor in Nashik, India.

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. All the standard Flange dimensional sizes are Readily available at any Naysha Steel branch in India.

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 India.

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 SS 304 400 Class Flanges In Mumbai, India

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