Stainless Steel Weld Neck Flanges Manufacturer and Exporter in UAE

Naysha Steel and Alloys is the very best manufacturer and also exporter of weld neck flanges in the UAE due to its dedication to the quality. We offer an extensive range of flange products including stainless steel, carbon steel, copper, and hastelloy variants to address the requirements of the different industries like oil, gas, petrochemicals, and marine operations. Naysha Steel and Alloys knows very well that the weld neck flanges are very essential for safe and also reliable connections in the complicated systems. Therefore, Our flanges are designed with precision, using the latest tools and technologies to produce the precise, accurate, and also durable products. The weld neck flanges are the very necessary part of the pipe systems that make the strong connections which do not leak. The flanges are available in many different sizes depending on the needs of many businesses and the long or short neck shape provides the additional support and strength to the pipes it connects. The long neck shape reduces stress at the many points where materials are connected, reduces the possibility of weak points, and also facilitates connecting things such as pipes and valves. Our stainless steel weld neck flanges are crafted with great precision, using the quality materials to make sure they perform superbly. In small sizes, weld neck flanges have a particular characteristic with small holes at the the top side. This design not only ensures that the flange is strong as a whole but also provides a very specific solution in cases where there is little space or critical design details.

stainless steel weld neck flanges manufacturer in uae

Stainless Steel Weld Neck Flanges Manufacturer And Supplier in United Arab Emirates (UAE)

In the pipe fittings systems, a vital component, the weld neck flange, is one of the most important components. These flanges are welded onto the end of a pipe to provide a sturdy and watertight connections. They are especially valuable in the industries that work in harsh environments, namely, oil and gas companies, chemical plants and power plants. The weld neck flanges are very special in that they have a long or short neck that provides a lot of added support to the pipes that they connect. We have become a main name in the industry due to our dedication to the quality and innovation. Our ability to formulate long-lasting and corrosion-resistant flanges covers a very wide range of industrial uses. The products we offer are carefully designed to conform to the standards of the industry and their sizes and configurations cover a wide variety of applications in the oil and gas, petrochemicals, and also the construction industries. We can be trusted to provide you with quality flange solutions that are tailor-made to your own unique requirements.

Stainless Steel Weld Neck Flanges:Benefits:

    The stainless steel weld neck flanges are associated with so many advantages as compared to the other types of flanges. Take a look for the key benefits of stainless steel weld neck flanges.

  • High Strength: Stainless steel weld neck flanges are very popular for their strength and also durability. They are high pressure resistant and also appropriate for the challenging uses.
  • Corrosion Resistance: The fact that stainless steel does not rust and is immune to corrosion renders the weld neck flanges suitable for harsh chemical environments, high temperatures as well as corrosive substance. This resistance ensures an extremely long-lasting performance.
  • Leak-Proof Design: The weld neck flanges have a long neck and a very smooth transition that decreases the stress as well as also minimizes movement issues hence dramatically reducing the likelihood of leaks. This secure connection offers a very high degree of security and also stability in the critical processes.
  • Easy Installation: Weld neck flanges can be easily installed with the basic welding skills. Such an element as an easy installation saves so much time and energy during the maintenance or repair.
  • Wide Range of Applications: In many industries, the stainless steel weld neck flanges are used due to their strong resistance to corrosion and reliable sealing. They are also perfect for the chemical industries, energy production, the oil and gas industry, and even for marine operations.
  • Cost-Effectiveness: While stainless steel weld neck flanges are a lot more expensive to acquire initially, they also have low maintenance costs and durability which makes them a very cost-effective option over the long run.
  • Compliance with Standards: These stainless steel weld neck flanges are made according to the industry standards and regulations, guaranteeing good quality and also reliability in different pipe 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 SS 316 weldneck Manufacturer And Exporter In UAE

ASME B16.5 is a standard used commonly for the pipe flanges and also flanged fittings. It encompasses the flange design pressure-temperature ratings, materials, dimensions, tolerances, marking, testing, and ways of designating the openings for pipe flanges and flanged fittings. Butt welding is a method of joining the weld neck flanges to a piping system; weld neck flanges are one of the most common types of flanges. They are used in the high-pressure settings and are ideal for the very high and also low temperatures. Two common pressure ratings for the weld neck flanges are ANSI 150# and also ANSI 300#. The number represents the highest pressure in pounds per square inch the flange can withstand at the specified temperature.

Weld neck flanges are manufactured using materials such as Stainless Steel Class 304 and also Stainless Steel 316, which are the most common types of stainless steel. Stainless steel is chosen for its resistance to the corrosion and its longevity. Naysha Steel and Alloys manufactures ASME B16.5 weld neck flanges, including the ANSI 150# and also the ANSI 300# options. These flanges are carefully made and they meet the highest quality standards. Naysha Steel and Alloys also provides stainless steel Class 304 and Class 316 weld neck flanges, which are also available in United Arab Emirates (UAE) to meet the needs of the customers.

Stainless steel weldneck flanges process as per UAE standards

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

Nominal Size Outside Diameter
Min. Thickness
RF Dia.
No. of Bolt Holes Diameter of Holes Bolt Circle
SO Bore ID
WN Bore ID
Dia. Hub Base
Dia. of Hub Top
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 Stainless Steel 316, ANSI Class 150 and ANSI 300# Weld Neck Flanges Availablity In United Arab Emirates

ss weld neck flanges manufacturer exporter uae

Naysha Steel and Alloys, one of the leading suppliers of industrial piping materials in the UAE, provides a wide variety of ASME B16.5, SS 304 and SS 316, ANSI Class 150 and ANSI 300# Weld Neck Flanges to meet the needs of the different industries. We have become the partner of choice for many clients in the region, thanks to our dedication to the quality, reliability, and the customer satisfaction. The raised face design of weld neck flanges will help to concentrate the pressure on a smaller area which will in turn make them more efficient in higher pressure applications. The weld neck design, which supports the pipes under welding in order to provide space for bolts as well as nuts, ensures a durable connection.

Our ASME B16.5 Weld Neck Flanges are made from superior stainless steel grades like SS 304 and SS 316 providing strength, resilience, and a longer lifespan. They have high-pressure and temperature resistance, which makes them very suitable for the applications in the oil and gas, petrochemical, power generation, and other harsh environments.

Naysha Steel and Alloys stocks an extensive range of ASME B16.5 Weld Neck Flanges in ANSI Class 150 and ANSI 300# ratings, which allows us to meet the immediate needs of the project in time. Our flanges come in different sizes, pressure ratings, and also configurations to suit the requirements of our clients. We also provide tailored solutions and also value-added services including cutting, drilling, and also coating that provide a perfect fit as well as superior performance for your piping systems.

Simple diagram to Understand of Weld Neck Flange Dimensions

Weld Neck Flange is a flange that is typically gets welded on the end of a pipe. It is a cylindrical hub, neck, and also a flange face. The hub is inserted into the end of the pipe and is welded in place, and the neck protrudes from the hub and also serves as an attachment point for the flange face. The flange face is the planar surface of the flange that faces against another flange to achieve a joint that is sealed. The dimensions of a Weld Neck Flange are very crucial in ensuring a good fit and also performance. The following diagram illustrates the key dimensions of a Weld Neck Flange:

SS Weld Neck Flanges Dimensions

In general-use industries like food processing, chemical processing, and also water treatment, SS 304 weld neck flanges are an appropriate option because of their high corrosion resistance, formability, and also weldability. In environments with higher levels of corrosion, especially those involving chlorides, the SS 316 weld neck flanges have a better corrosion resistance. In cases involving welding, the SS 316L weld neck flanges are recommended because of their low carbon content that minimizes the risk of carbide precipitation. The SS 410 weld neck flanges are mostly used in the applications that demand high strength and wear resistance, for instance in the mining and construction equipment. In applications involving highly corrosive environments such as chemical processing and also offshore oil and gas industries, SS 904L weld neck flanges offer superior corrosion protection.

The choice of the right stainless steel grade for a weld neck flange is an very important decision that can be based upon several factors which may include, operating environment conditions such as temperature and pressure among others alongside specific application requirements. It is, therefore, recommended to work with an experienced supplier or engineer in order to choose the best stainless steel grade for a given project considering all factors that should be taken into account so as to achieve optimum performance and durability of weld neck flange.

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 UAE: Valid From 1st February 2024

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

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 SS Flanges Manufacturer, UNS S31803 Weldneck 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 in UAE : (Contact us for detailed information for your nearest branches)

  • Stainless Steel Weld Neck Flanges manufacturer and contractor in Dubai, United Arab Emirates (UAE).
  • Stainless Steel Weld Neck Flanges manufacturer and supplier in Abu Dhabi, UAE.
  • Stainless Steel Weld Neck Flanges manufacturer and stockists in Sharjah, UAE.
  • Stainless Steel Weld Neck Flanges manufacturer and Exporter in Al Ain, UAE .
  • Stainless Steel Weld Neck Flanges manufacturer and warehousing in United Arab Emirates (UAE).
  • Stainless Steel Weld Neck Flanges manufacturer and wholesalor in Musaffah City, UAE.

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 UAE.

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 UAE.

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 UAE

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