ASTM A182 F11 Weld Neck Flanges

Manufacturer of ASME SA182 F11 WNRTJ Flange in India

Flanges are a crucial piping system component that connects pipes, valves, pumps, and other equipment to form a complete system. Weld neck flanges, among other types, are welded at the neck area of the flange and are used in high-pressure and temperature applications. ASTM A182 Alloy Steel F11 Weld Neck Flanges are among the most popular types of weld neck flanges. They are known for their high strength, resistance to corrosion, and durability.


ASTM A182 Alloy Steel F11 Weld Neck Flanges come in various types, such as raised face (RF), flat face (FF), ring-type joint (RTJ), long weld neck (LWN), and other special types. The raised face type is the most commonly used type, which elevates the gasket seating surface to provide a reliable seal. Flat-face type flanges are mainly used in low-pressure applications where there is no need for gaskets. RTJ flanges are generally used in high-pressure and high-temperature applications requiring a metal-to-metal seal. LWN flanges have a longer neck length, which makes them ideal for insulation and underwater piping systems.


ASTM A182 Alloy Steel F11 Weld Neck Flanges are used in many industries, such as oil and gas, petrochemical, chemical, and power plants. They are used in high-pressure and high-temperature applications, such as oil and gas pipelines, steam boilers, pressure vessels, heat exchangers, and other critical equipment. The use of flanges allows easy maintenance and repair of the equipment, which saves time and costs.


One of the main benefits of ASTM A182 Alloy Steel F11 Weld Neck Flanges is their high strength and excellent corrosion resistance. This alloy steel combines chromium, molybdenum, and other elements, making it highly resistant to oxidation and sulfidation at high temperatures. The weld neck design enhances the strength of the flange and allows for easy alignment of the pipes. Additionally, weld neck flanges provide a reliable and leak-free connection, which reduces the risk of equipment failure and accidents.


Proper maintenance is necessary to maintain the quality and performance of ASTM A182 Alloy Steel F11 Weld Neck Flanges. The flanges should be inspected regularly for corrosion, cracks, or damage and repaired or replaced if necessary. Proper installation and tightening of bolts are also crucial to prevent leakages. Adequate training of the operators and regular inspections can prevent any issues and ensure safe and efficient operations.
ASTM A182 Alloy Steel F11 Weld Neck Flanges are essential piping system components that provide reliable, leak-free, and long-lasting connections. Their high strength, corrosion resistance, and durability make them suitable for high-pressure and high-temperature applications in various industries. Knowing the types and uses of these flanges can help make a more informed decision about their selection and application. Proper maintenance is also necessary to ensure the safety and efficiency of the equipment.


Specification of Alloy Steel F11 Weld Neck Flanges

Spec bag

Specifications: ASTM A182 / ASME SA182

Dimensions: ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.

Standard: ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.

Size: 1/4" - 48"

Class/Pressure: 150#, 300#, 718#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.

Flange Face Type: flat face (FF), Raised Face (RF), Ring Type Joint (RTJ)

Types of Alloy Steel F11 Weld Neck Flanges

Alloy Steel  F11 WNRF Flanges

AS ASTM A182 F11 WNRF Flanges

Alloy Steel  F11 WNRTJ Flanges

AS ASTM A182 F11 WNRTJ Flanges

Equivalent Grades for Alloy Steel F11 Weld Neck Flanges

STANDARD WERKSTOFF NR. UNS
Alloy Steel F11 1.7335 K11597

Alloy Steel F11 Weld Neck Flanges Chemical Composition

Grade C Mn Si P S Cr Mo
Alloy Steel F11 0.15 max 0.3-0.6 0.5 - 1 0.03 0.03 1 - 1.5 0.044 - 0.65

Mechanical Properties of Alloy Steel F11 WNRF Flanges

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min
ASTM A182 F11 205 415 20

Alloy Steel F11 Weld Neck Flanges can withstand high temperatures up to 815°C (1500°F). The temperature limit may vary depending on the specific application & other factors such as pressure and duration of exposure.

The working pressure of Alloy Steel F11 Weld Neck Flanges depends on various factors such as the size of the flange, the temperature & the type of fluid being transported. It is important to refer to the relevant standards and guidelines to determine the appropriate working pressure.

Alloy Steel F11 Weld Neck Flanges are available in various sizes ranging from 1/2" to 24". The dimensions are determined by the relevant standards such as ANSI B16.5 & ASME B16.47.