Large caliber flat welding flange with neck

Large Caliber Flat Welding Flange with Neck

Product Overview:
The Large Caliber Flat Welding Flange with Neck is designed for high-diameter pipelines requiring a strong and reliable welded connection. It features a flat welding surface combined with a reinforced neck structure, improving strength, stress distribution, and alignment during installation. This flange is widely used in low- to medium-pressure systems where both structural support and ease of welding are important.

Key Features:

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

• Type: Flat welding flange with neck (plate-type with hub)

• Standards: ANSI, DIN, JIS, EN, GB, or customized drawings

• Size Range: DN500–DN2000 (20"–80") or larger upon request

• Pressure Rating: PN6–PN25 / Class 150–Class 300

• Surface Treatment: Anti-rust oil, galvanizing, black paint, epoxy coating, or customized

Advantages:

• Designed for large-diameter pipelines with enhanced mechanical stability

• Neck structure improves stress distribution and reduces deformation during welding

• Flat welding face ensures easy assembly and disassembly

• Ideal for systems requiring frequent inspection or maintenance

• Compatible with various gasket types for secure sealing

Applications:

• Municipal water supply and drainage systems

• Power generation and cooling water lines

• Oil, gas, and chemical transfer pipelines

• Heavy-duty HVAC and air-handling systems

• Shipbuilding and offshore engineering

Customization Services:

• Bolt hole configuration and flange face type (FF, RF, etc.)

• Extra-thick or heavy-duty wall options

• Special coatings for anti-corrosion or high-temperature use

• Custom logo stamping and export-grade packaging