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Home > products > Pipe Fitting Flanges > Carbon Steel Weld Neck Flanges PN 25 ASTM A105 EN1092-01 4 Inch WNRF Flanges

Carbon Steel Weld Neck Flanges PN 25 ASTM A105 EN1092-01 4 Inch WNRF Flanges

Product Details

Place of Origin: Xi'an, Shaanxi Province, China

Brand Name: PeterTrade,China

Certification: ISO9001,CE, API,etc

Model Number: EN1092-01 WNRF

Payment & Shipping Terms

Minimum Order Quantity: 10 pieces

Price: negotiable

Packaging Details: Plywood case or pallet, or as per your requirement

Delivery Time: about 15-45 days for delivery

Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram

Supply Ability: 200 Tons Per Month

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Highlight:

PN 25 Weld Neck Flanges

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Carbon Steel WNRF Flanges

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EN1092-01 Weld Neck Flanges

Features:
Easy To Install, High Strength, Corrosion Resistance, Durable, Cost-effective
Product Standard:
EN1092-01 (European Standard)
Connection Type:
Welded, Threaded, Socket Welded
Face Type:
Raised Face, Flat Face, Ring Type Joint
Standard:
ANSI, DIN, EN, BS, JIS, GOST
Flange Facing:
Smooth, Raised, Grooved
Coating:
Anti-rust Oil, Black Paint, Yellow Paint, Zinc Plated, Hot Dipped Galvanized
Pressure:
PN 25
Pressure Rating:
DN 10- DN 1000
Applications:
Oil And Gas, Chemical, Power Generation, Water Treatment, Shipbuilding, Construction
Features:
Easy To Install, High Strength, Corrosion Resistance, Durable, Cost-effective
Product Standard:
EN1092-01 (European Standard)
Connection Type:
Welded, Threaded, Socket Welded
Face Type:
Raised Face, Flat Face, Ring Type Joint
Standard:
ANSI, DIN, EN, BS, JIS, GOST
Flange Facing:
Smooth, Raised, Grooved
Coating:
Anti-rust Oil, Black Paint, Yellow Paint, Zinc Plated, Hot Dipped Galvanized
Pressure:
PN 25
Pressure Rating:
DN 10- DN 1000
Applications:
Oil And Gas, Chemical, Power Generation, Water Treatment, Shipbuilding, Construction
Carbon Steel Weld Neck Flanges PN 25 ASTM A105 EN1092-01 4 Inch WNRF Flanges

Carbon Steel Weld Neck Flanges PN 25 ASTM A105 EN1092-01 WNRF Flanges/ Welding Flanges 4 Inch Weld Neck Flange in Water Treatment and Pipeline Systems

 

Introduction of EN1092-01 Weld Neck Flanges:

EN 1092-1 is a European standard that specifies requirements for steel flanges in various applications. Specifically, EN 1092-1 Weld Neck Flanges refer to a type of flange designed with a neck that is welded to the piping system.

 

The weld neck of these flanges is designed to be butt-welded to the pipe, providing a strong and reliable connection. The weld neck also adds reinforcement to the flange, making it suitable for high-pressure applications. EN 1092-1 specifies different flange face types, including Type A (flat face), Type B (raised face), Type C (tongue and groove), and Type D (ring joint face), among others. This allows for flexibility in choosing the appropriate sealing surface for specific operational requirements.

 

The standard covers a range of materials suitable for different industrial applications. Common materials include carbon steel, stainless steel, alloy steel, and other specialized materials depending on the application's requirements for corrosion resistance, temperature, and pressure.

 

EN 1092-1 Weld Neck Flanges are available in various pressure ratings, typically ranging from PN6 to PN100 (6 bar to 100 bar), depending on the size and material of the flange. This allows for matching the flange's pressure rating with that of the piping system to ensure compatibility and safety.

 

EN 1092-1 Weld Neck Flanges are widely used in industries such as oil and gas, chemical processing, power generation, water treatment, and others where secure, leak-proof connections are essential under varying pressure and temperature conditions.

 

 

 

Specifications of EN1092-01 Weld Neck Flanges PN 25:

Carbon Steel Weld Neck Flanges PN 25 ASTM A105 EN1092-01 4 Inch WNRF Flanges 0

EN1092-01 Type 11 Weld Neck Flange PN 25 RF
DN Outside diameter Diameter of bolt circle Diameter of bolt hole Bolting Outside diameter of neck Flange thickness Length Neck diameters Corner radii Wall thickness Raised face Approx weight
D K L Number A C2 H2 H3 N1 R1 S d1 f1 KG
10 90 60 14 4 17.2 16 35 6 28 4 2 40 2 0.7
15 95 65 14 4 21.3 16 38 6 32 4 2 45 2 0.8
20 105 75 14 4 26.9 18 40 6 40 4 2.3 58 2 1.1
25 115 85 14 4 33.7 18 40 6 46 4 2.6 68 2 1.3
32 140 100 18 4 42.4 18 42 6 56 6 2.6 78 2 1.9
40 150 110 18 4 48.3 18 45 7 64 6 2.6 88 3 2.2
50 165 125 18 4 60.3 20 48 8 75 6 2.9 102 3 2.9
65 185 145 18 8 76.1 22 52 10 90 6 2.9 122 3 3.7
80 200 160 18 8 88.9 24 58 12 105 8 3.2 138 3 4.8
100 235 190 22 8 114.3 24 65 12 134 8 3.6 162 3 6.5
125 270 220 26 8 139.7 26 68 12 162 8 4 188 3 8.9
150 300 250 26 8 168.3 28 75 12 192 10 4.5 218 3 11.7
200 360 310 26 12 219.1 30 80 16 244 10 6.3 278 3 21
250 425 370 30 12 273 32 88 18 298 12 7.1 335 3 34.2
300 485 430 30 16 323.9 34 92 18 352 12 8 395 4 47.6
350 555 490 33 16 355.6 38 100 20 398 12 8 450 4 69.3
400 620 550 36 16 406.4 40 110 20 452 12 8.8 505 4 98
450 670 600 36 20 457 46 110 20 500 12 8.8 555 4 105
500 730 660 36 20 508 48 125 20 558 12 10 615 4 130
600 845 770 39 20 610 48 125 20 660 12 11 720 5 209
700 960 875 42 24 711 50 129 20 760 12 14.2 820 5 -
800 1085 990 48 24 813 53 138 22 864 12 16 930 5 -
900 1185 1090 48 28 914 57 148 24 968 12 17.5 1030 5 -
1000 1320 1210 56 28 1016 63 160 24 1070 16 20 1140 5 -

1.Dimensions are in millimeters(mm).

2.Dimensions can be specified by different purchasers.

 

 

 

Grades of Stainless Steel Weld Neck Flanges:

Stainless Steel Weld Neck Flanges specified by ASTM A182 are widely used in various industries. These flanges are designed to slip over the pipe and are welded both inside and outside to provide a secure and leak-proof connection. The material grades F304, F304L, F316, F316L, and F304H denote specific types of stainless steel, each with unique properties suited for different applications.

 

ASTM A182 F304:

Composition: Austenitic stainless steel with a nominal composition of 18% chromium and 8% nickel.

Properties: Good corrosion resistance, weldability, and formability. Suitable for general-purpose applications.

 

ASTM A182 F304L:

Composition: Similar to F304 but with a lower carbon content (max 0.03%).

Properties: Enhanced resistance to intergranular corrosion after welding. Ideal for applications requiring post-weld heat treatment.

 

ASTM A182 F316:

Composition: Contains 16% chromium, 10% nickel, and 2% molybdenum.

Properties: Superior corrosion resistance, especially against chlorides and other industrial solvents. Suitable for more aggressive environments.

 

ASTM A182 F316L:

Composition: Similar to F316 but with lower carbon content (max 0.03%).

Properties: Improved resistance to intergranular corrosion. Preferred for welding operations where post-weld annealing is not possible.

 

ASTM A182 F304H:

Composition: Similar to F304 but with a higher carbon content (0.04%-0.10%).

Properties: Improved high-temperature strength and creep resistance. Suitable for high-temperature applications.

 

 

 

Advantages of Using Weld Neck Flanges in the Applications:

Strength and Reliability: Weld neck flanges are known for their strength, making them suitable for high-pressure applications. The welded neck provides reinforcement to the flange, making it highly resistant to bending, twisting, and distortion. This structural integrity ensures a secure and reliable joint that can withstand high pressures and vibrations without failure.

 

Enhanced Structural Integrity: The long tapered hub of a weld neck flange allows for a smooth and gradual transition from the flange to the pipe. This design helps distribute stress more evenly, reducing the risk of stress concentrations that could lead to joint failure. It enhances the overall structural integrity of the piping system, particularly in critical applications.

 

Leakage Prevention: EN 1092-1 Weld Neck Flanges typically feature a raised face that provides a tight seal when compressed against a gasket. This design effectively prevents leakage of fluids or gases from the joint, ensuring reliability and safety in operations where leaks are not acceptable.

 

Suitability for High-Pressure Applications: Due to their robust construction and secure welding connection, weld neck flanges are well-suited for high-pressure piping systems. The welded joint between the flange and pipe creates a strong and leak-resistant connection capable of withstanding the forces exerted by high-pressure fluids or gases.

 

Resistance to Vibrations: Weld neck flanges are resistant to vibrations and mechanical stresses due to their welded connection. This stability reduces the risk of loosening or failure caused by vibration-induced fatigue, making them ideal for applications in industries such as oil and gas, petrochemicals, and power generation where machinery vibration is common.

 

Versatility: EN 1092-1 specifies a wide range of materials and dimensions for weld neck flanges, allowing them to be used in diverse industrial applications. They are available in various pressure ratings and sizes, accommodating different requirements for temperature, pressure, and fluid compatibility.

 

 

 

Applications of EN1092-01 Weld Neck Flanges:

EN1092-01 Weld Neck Flanges are specifically designed for use in specific applications where their unique characteristics are required.

 

Oil and Gas Industry: EN1092-01 Weld Neck Flanges are widely used in the oil and gas industry for connecting pipes and equipment in refineries, offshore platforms, pipelines, and petrochemical plants. They are suitable for high-pressure and high-temperature applications commonly found in this industry.

 

Chemical Processing: EN1092-01 Weld Neck Flanges are employed in chemical processing plants for connecting pipelines, reactors, and other equipment. They provide a secure and leak-free connection, ensuring the safe handling and transportation of chemicals and corrosive fluids.

 

Power Generation: EN1092-01 Weld Neck Flanges are utilized in power plants, including thermal power plants and nuclear power plants. They are used for connecting pipes in boiler systems, steam lines, and other critical applications that require high-pressure and high-temperature capabilities.

 

Water Treatment: EN1092-01 Weld Neck Flanges find application in water treatment plants for connecting pipes and equipment involved in water supply, wastewater treatment, and desalination processes. They are suitable for handling water at various temperatures and pressures.

 

Pharmaceutical and Food Industries: EN1092-01 Weld Neck Flanges are utilized in pharmaceutical and food processing facilities. They provide a hygienic and reliable connection for pipes carrying sterile fluids, chemicals, and food-grade materials.

 

Shipbuilding and Marine Industry: EN1092-01 Weld Neck Flanges are used in shipbuilding and marine applications, including shipyards, offshore platforms, and marine vessels. They are employed for connecting pipes and equipment in various systems such as fuel lines, cooling systems, and hydraulic systems.

 

HVAC and Plumbing Systems: EN1092-01 Weld Neck Flanges are employed in heating, ventilation, air conditioning (HVAC), and plumbing systems. They provide a secure connection for pipes carrying hot water, steam, or chilled fluids.

 

General Industrial Applications: EN1092-01 Weld Neck Flanges have widespread use in various industrial sectors, including manufacturing, construction, and infrastructure. They are suitable for connecting pipelines in industrial processes that involve high-pressure fluids or gases.