Large diameter plate flat welding flange

Large Diameter Plate Flat Welding Flange

Product Overview:
The Large Diameter Plate Flat Welding Flange is a heavy-duty flange specifically designed for large-scale pipeline systems operating under low to moderate pressure. Manufactured from high-strength steel plates, this flange type offers a simple and effective connection method for large-diameter pipes. Its flat welding surface allows for easy on-site installation and reliable sealing when used with the appropriate gasket.

Key Features:

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

• Type: Plate flat welding flange (SO-type, no neck)

• Size Range: DN500–DN3000 (20"–120") or as required

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

• Standard Compliance: ANSI, DIN, JIS, EN, GB, or customer specifications

• Surface Treatment: Anti-rust oil, black paint, hot-dip galvanizing, epoxy coating, etc.

Advantages:

• Simple design and cost-effective manufacturing

• Suitable for large-diameter, low-pressure applications

• Easy to align and weld on-site

• Large flat surface provides stable sealing with gaskets

• Ideal for systems requiring occasional disassembly

Applications:

• Large municipal water and sewage pipelines

• Desalination and wastewater treatment plants

• Cooling water systems in power plants

• Storage tank and vessel connections

• Air ducts and low-pressure gas pipelines

Customization Options:

• Bolt hole patterns and face types (FF, RF, etc.)

• Enhanced thickness or reinforcement ribs for added strength

• Coating options for corrosion, chemical, or UV resistance

• Logo stamping, batch numbers, and export documentation