A flange connection is a widely used type of connection for coated steel pipes, consisting of a pair of flanges, connecting gaskets, and several bolts and nuts.

Flange connection applicable diameter range: ≥DN15

National Standard Flat Welding Flange Pressure Range: PN 2.5 - PN 40

Advantages and Features of Flange Connections

1. Strong mechanical and sealing properties.

2. Applicable pipe size range: Suitable for pipes with DN50 and above.

3. No welding required, easy installation, and saves construction time. Especially for coal mine use, plastic-coated steel pipes, where the construction environment prohibits electric sparks, flange connections are particularly suitable for in-mine connections.

4. The construction process will not damage the coating, and the maintenance is simple with easy disassembly during maintenance.

Flange Connection Process

1. Shot blasting and rust removal treatment for steel pipes.

2. Weld flanges to both ends of the steel pipe.

3. Heat the flanged steel pipe.

4. Perform internal and external plastic coating on flanged steel pipes.

Plastic-coated steel pipes for water supply and drainage are a new type of composite pipe material specifically designed for water supply and drainage purposes, combining the characteristics of various pipes. These composite pipes offer both the strength and rigidity of steel pipes and the wear-resistant, corrosion-resistant, and low-friction coefficient benefits of plastic pipes, making them a highly cost-effective and green energy-saving pipe material. They are widely used in industrial water supply and drainage, domestic water supply and drainage, seawater treatment, HVAC circulating water, and chemical fluid transportation, and are known as "green building materials." Plastic-coated Steel Pipe, Plastic-coated Steel Pipe Manufacturer, Plastic-coated Steel Pipe Price