Stainless Steel Weld Neck Flanges Manufacturer and Exporter in Oman

Stainless steel weld-neck flanges are the workhorses of high-pressure piping systems. They are excellent for use in fields requiring strong connection and corrosion resistance to high temperatures. The source of their power is in the unique design itself. Unlike other flanges, weld neck flanges have a conical transition, which makes a smooth connection to the pipe. By doing that, the stress is spread out all over, therefore, there are no weak spots or breaks. On the other hand, the weld between the flange and the pipe, also known as the neck, is extended, hence increasing the load-bearing capacity. Besides, stainless steel gives better corrosion resistance than carbon steel and as such, weld neck flanges are ideal for those environments which are harsh like chemical plants, marine applications and oil and gas refineries. There are different grades of stainless steel that you can choose from depending on the specific media and temperatures you need to work with. In the case of high integral piping systems, the stainless steel weld neck flanges remain the most durable and the most flexible option.

Naysha Steel can be termed as a leading manufacturer and exporter of Stainless Steel Weld Neck Flanges in Oman, having a prominent repute in the industry. The quality we create is most likely defined, which our flanges have their absolute levels of quality in everything that we produce. It stands as a reliable partner in the market, Naysha Steel supplies Weld Neck Flanges that symbolize quickness and firmness to Oman's industrial sector, conforming to its strict laws. Each Stainless Steel Weld Neck Flange produced by Naysha Steel is recognized for meeting the mark in terms of the functionality and quality of such flanges, playing the vital role of ensuring the integrity of pipelines and connections. Forged for their advanced corrosion resistant quality and high capacity, our flanges are used across various sectors; and notably, in petrochemistry and offshore oil drilling within the Omani setting. The customers from Oman praise Naysha Steel for providing products that do not only meet but exceed consumer demands. For a flawless integration that shouts durability and unequaled quality, choose Naysha Steel Weld Neck Flanges. Flanges of Naysha Steel will take your industrial units to new heights of perfection.

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Stainless Steel Weld Neck Flanges Manufacturer And Supplier in Oman

We have high-level weld neck flanges that plays key role in diverse industries these include oil as well as gas industry, chemical industries, and power plants that ensure integrity and tight sealing under demanding condition. Embracing the principle of building solid solutions, corrosion resistance remains our principal focus to increase lifespan and efficiency. The wide range of our products include the models made of stainless steel, carbon steel. We use state-of-the-art tools and technologies with precision manufacturing method to ensure accuracy and longevity. Aiming to be the first providers of weld neck flanges in Oman, Naysha Steel and Alloys offers client' satisfaction, timely delivers and competitive prices. Even with the aim of eliminating vulnerabilities in weak connections concerning stress points, our weld neck flanges are intended to meet the industry's highest standards. Contact us today and let us tell you more about our refined products and services.

Stainless Steel Weld Neck Flanges:Benefits:

    The stainless steel weld neck 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.

  • High Strength: Weld neck flanges constructed from stainless steel are commonly used for their durability and long lifespan. They are pressure-resistant and applicable for tough applications.
  • Corrosion Resistance: Weld neck flanges are suitable for aggressive chemical environments, high heat, and corrosive substances because stainless steel does not rust and is corrosion-resistant. This resistance ensures a long service life.
  • Leak-Proof Design: Weld neck flanges with a long neck and smooth transition reduce stress and minimize movements, almost eliminating leaks. The secure connection offers a high level of security and reliability in critical processes.
  • Easy Installation: Weld neck flanges can be installed with basic welding knowledge in a short time, saving time and effort during maintenance or repair.
  • Wide Range of Applications: Many industries use stainless steel weld neck flanges due to their superior corrosion resistance and reliable sealing. They are ideal for chemical industries, energy production, the oil and gas industry, and marine operations.
  • Cost-Effectiveness: While stainless steel weld neck flanges have higher initial acquisition costs, they are cost-effective in the long term due to lower maintenance costs and durability.
  • Compliance with Standards: Weld neck flanges are made in accordance with industry standards and regulations, ensuring good quality and reliability within different piping systems.

ASME B16.5 Weld Neck Flanges: ANSI 304# weld neck flanges and ANSI 300# weld neck flanges Manufacturer, Stainless Steel Class 105 weld neck flanges and Stainless Steel 316 weldneck Manufacturer And Exporter In Oman

The industrial evolution of Oman is significantly owed to Naysha Steel, one of the leading manufacturers and exporters of Stainless Steel Weld Neck Flanges in the nation. Our flanges represent precision engineering and fully comply with the demanding ASME B16.5 standards, demonstrating high quality and tightness of sealing. Raised by their quality and durability, our stainless steel weld neck flanges play a critical role in Oman’s competitive markets, including the oil & gas industry, chemical plants, and power plants.

At Naysha Steel, quality and innovation are key. Each flange is produced to the highest possible standard within the industry. An ASME B16.5 Weld Neck Flange from us not only enables secure connections but also provides valuable mechanical support to the connected pipework, alleviating stresses and making the system stronger as a whole. But as a committed manufacturer, Naysha Steel offers more than the basics regarding flanges; it provides customizable flange options to meet the needs of our clients in Oman. For ASME B16.5 Weld Neck Flanges that represent excellence, dependability, and compliance with international standards, choose Naysha Steel to support Oman’s industrialization effortlessly. You can trust Naysha Steel as your dependable partner in Oman’s industrial setting which is characterized by accuracy and quality and is a representation of our commitment to perfection.

stainless steel weldneck flanges manufacturer

Sizes and Availablity of Stainless Steel weld neck flanges in our Oman 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

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

ss weld neck flanges manufacturer

In this regard, we have become an important central point for many of our customers in the region due to our operations in Oman. We are a true reflection of our ongoing resolute determination to quality, reliability, and customer satisfaction. Made out of superior SS 304 and SS 316 materials, our ASME B16.5 Weld Neck Flanges are very strong and durable with robust resistance and are ideal for use in hostile environments in the oil and gas, petrochemical, and power generation industries.

The same is manufactured and exported by class Naysha Steel, a brand who trusts in Oman and provides a wide range of ASME B16.5 Weld Neck Flanges for ANSI Class 150 and ANSI 300# ratings. Our flanges have high resistance to pressure and temperature, ensuring excellent operation even under the most severe conditions. However, beyond the realm of traditional products, Naysha Steel blazes the trail by offering a variety of sizes, working pressure ratings, and flange types, offering fully customized solutions through sophisticated services like cutting, drilling, and coating, which increase the precision and functionality of installed pipe applications.

All of this has been possible due to the company’s compliance with international standards that have gained Naysha Steel and Alloys the reputation of quality, accuracy, and reliability in respect of flanges. Our commitment encompasses quality customer services, swift delivery, and competitive pricing that has made us the leader of the market for weld neck flanges in Oman. Naysha Steel is the preferred option for continued performance, dependability and creativity in pipeline solutions.

Simple diagram to Understand of Weld Neck Flange Dimensions

The welding neck flanges are characterized with innovative construction, welding the hub at the end of the pipe, thus ensuring a high level of connection where the longer neck also provides an important support. Dimensional accuracy of these flanges is important for proper fitment and good operation and hence these flanges play a very vital role for many of the areas in the industrial work of Oman. Trust Naysha Steel Steel Weld Neck Flanges are used for high quality welding which addresses the specific requirements of Oman’s growing and diversified industries.

SS Weld Neck Flanges

It benefits the company that its SS 304 weld neck flanges are in greater demand in industries like the food processing, chemical processing, and water treatment in Oman due to their excellent corrosive properties, formability and weldability. All in all, the SS 316 weld neck flanges are developed in the form of a superior defense to the SS 316 FF flanges for harsher corrosion environments – and especially when chlorides are involved. Superior trend in the preference of SS316L weld neck flanges for welding operation can be noted because of its low content of carbon that prevents carbide precipitation. Well, SS 410 weld neck flanges are popular in Oman for high-strength abrasion-resistant applications applicable to mining and construction equipment.

Weld neck flange applications require making a choice regarding which grade of stainless steel will be suitable due to several parameters that play a role here, including the range of environmental conditions, temperature, pressure, and other application-specific factors. All in all, the presence of competent providers or engineers should be according to the recommendations of Naysha Steel for welded neck flanges to work appropriately and their longevity.

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 Oman: Valid From 1st February 2024

Take a better look on price list of stainless steel and weld neck flanges in Oman

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 Exporter, 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 in Oman : (Contact us for detailed information for your nearest branches)

  • Stainless Steel Weld Neck Flanges manufacturer and contractor in Sohar, Oman.
  • Stainless Steel Weld Neck Flanges manufacturer and supplier in Nizwa, Oman.
  • Stainless Steel Weld Neck Flanges manufacturer and stockists in Muscat, Oman.
  • Stainless Steel Weld Neck Flanges manufacturer and Exporter in Bahla, Oman.
  • Stainless Steel Weld Neck Flanges manufacturer and warehousing in Sur, Oman.
  • Stainless Steel Weld Neck Flanges manufacturer and wholesalor in Khasab, Oman.

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 Oman

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 Oman.

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 Oman

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