WELDING NECK FLANGE

Welding Neck Flange

Product Overview:
The Welding Neck Flange (WN Flange) is a high-strength, precision-engineered flange designed for critical applications involving high pressure, high temperature, or hazardous conditions. It features a long tapered neck that provides excellent stress distribution and a smooth transition from flange to pipe, ensuring superior mechanical integrity and sealing performance.

Key Features:

• Material: Carbon steel, stainless steel, alloy steel, duplex steel (customizable)

• Type: Welding Neck (WN) flange with tapered hub

• Standards: ANSI/ASME B16.5, DIN, JIS, EN, GB, or as per customer drawings

• Size Range: DN15–DN2000 (1/2"–80")

• Pressure Rating: Class 150 to Class 2500 / PN10 to PN400

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

• Surface Finish: Machined face, with rust-preventive oil, galvanized, or painted

Advantages:

• Designed to withstand extreme pressure and temperature fluctuations

• Provides smooth fluid flow with minimal turbulence

• Excellent fatigue and vibration resistance due to the tapered neck

• Ideal for critical applications requiring long service life and reliability

• Permanent welded connection enhances system integrity

Applications:

• Oil and gas transmission pipelines

• Power plants and thermal systems

• High-pressure steam lines

• Refineries and petrochemical plants

• Offshore and subsea installations

Customization Services:

• Neck dimensions and wall thickness

• Custom drilling and bolt patterns

• Special alloy grades for corrosive or high-temp environments

• Logo stamping, packaging, and documentation for export