ANSI / ASME B16.5 Forged Flange ASTM A182 Grade LF2 Alloy Steel Weld Neck Flange

The ASTM A350 LF2 flange is designed to maintain toughness and impact resistance which is suitable for low-temperature applications down to -50°F (-45°C) and also for higher temperatures. They are commonly used in oil and gas pipelines, chemical processing, and other industries where durability and resistance to low temperatures are essential.

Key Characteristics of LF2 Weld Neck Flanges

1. Forgeability: The material is designed to be forged into various shapes, which improves mechanical properties.
2. Low-Temperature Toughness: Specifically formulated for resistance to brittle fracture at low temperatures, vital in cryogenic conditions.
3. Weldability: LF2 flanges can be welded to other components, making them suitable for a variety of piping configurations and applications.

Carbon Steel A350 LF2 Alloy Steel Flanges Chemical Composition

Available Flanges Grades

1) ANSI B16.5, ASME B16.47 FLANGE

• Size range: 1/2" to 80" DN15 to DN2000
• Design: welding neck, slip on, blind, socket welding, threaded, lap-joint
• Pressure: 150#, 300#, 600#,900#,1500#, 2500#
• Wall thickness for welding neck flange: STD, SCH40, SCH80, SCH160. SCHXXS
• Material: carbon steel A105, stainless steel 304/304L, 316/316L
• Coating: black paint, yellow transparent paint, cold and hot dip galvanize
• Package: seaworthy plywooden case, wooden pallet

2) EN1092-1 FLANGE

• Size range: DN15 to DN2000Design: type: 01 plate flange, type02 loose flange, type05 blind flange, type11 welding necking
• type12 slip on flange, type 13 threaded flange
• Pressure: PN6, PN10, PN16, PN25, PN40, PN64, PN100
• Material: carbon steel C22.8, S235, S235JR, P235GH, stainless steel: 304/304L, 316/316L
• Coating: black paint, yellow transparent paint, cold and hot dip galvanize
• Package: sea worthy plywooden case, wooden pallet

3) DIN FLANGE

• Size range: DN15 to DN2000
• Design: slip on flange DIN2573,2576,2502,2503, 2543,2545
• welding neck falnge DIN2631, 2632,2633,2634,2635
• blind flange DIN 2527 PN6, PN10, PN16, PN25, PN40
• threaded falnge DIN2565,2566,2567,2567
• loose flange DIN 2641,2642,2656,2673
• Material: carbon steel ST37.2, stainless steel 1.4301, 1.4404
• Coating: rust-proof oil, transparent paint, cold and hot galvanize
• Package: sea worthy plywooden case, wooden pallet

Applications:

• Oil and Gas Industry: For piping systems in low-temperature environments, particularly in production and transport applications.
• Chemical Processing: Suitable for applications that involve low-temperature corrosive chemicals.
• Cryogenic Applications: Used in processes involving gaseous or liquid hydrocarbons at low temperatures, such as liquefied natural gas (LNG) facilities.