Long Weld Neck Flange

About Long Weld Neck Flange

The Long Weld Neck (LWN) Flange is a specialized flange designed for high-pressure and high-temperature applications. Unlike standard weld neck flanges, the LWN flange features an extended neck that acts as a nozzle for pressure vessels, tanks, and process piping systems. Manufactured in Carbon Steel, Stainless Steel, and Alloy Steel, Induskarts LWN flanges conform to ANSI B16.5 / ASME standards and are forged for superior strength, durability, and leak-proof performance.

Technical Specifications:

• Material Grades: ASTM A105 (CS), ASTM A350 LF2 (Low Temp CS), ASTM A182 F304/F316 (SS)

• Type: Long Weld Neck Flange (LWN)

• Standard: ANSI B16.5 / ASME B16.47

• Size Range: 2 to 24

• Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500

• Face Type: Raised Face (RF), Flat Face (FF), Ring Type Joint (RTJ)

• Neck Length: As per ANSI / Customizable as per drawings

• Manufacturing Method: Forged, Heat Treated & CNC Machined

• Surface Finish: CNC Machined, Rust Preventive Oil Coated

• Testing: Hydrostatic, Ultrasonic, Radiography, PMI, MTC available

Certifications:
ISO 9001: 2015, IBR Approval, Mill Test Certificate (MTC), Third-Party Inspection (on request)

Applications & Buyer Types:

• Pressure Vessels & Boilers

• High-Pressure Process Equipment

• Refineries & Petrochemical Plants

• Power Generation Plants

• Shipbuilding & Offshore Projects

• Ideal for EPC contractors, OEMs, and industrial plant fabricators.

FAQ:

1. What is the main difference between a Weld Neck and Long Weld Neck flange?
   LWN has an extended neck used as a nozzle, suitable for high-pressure vessels.

2. Can LWN flanges be customized?
   Yes, based on client drawings & pressure class.

3. Are LWN flanges suitable for cryogenic services?
   Yes, with LF2 or stainless steel material grades.

4. Do you supply flanges with RTJ face type?
   Yes, available on request.

Call to Action:
Connect with Induskart for bulk orders, project-based customization, and assured quality Long Weld Neck Flanges.