Threaded Flange for Reliable Threaded Piping Connections

A threaded flange, also known as a screwed flange, is a type of flange that connects to pipes through internal threads instead of welding. This design allows fast installation and removal without welding equipment, making it suitable for applications where welding is difficult or not preferred.

Threaded flanges are commonly used in small-diameter piping systems, low-pressure applications, maintenance systems, and locations where welding restrictions exist.

DTC International supplies high-quality threaded flanges in various materials, sizes, pressure ratings, and thread standards to meet global industrial piping requirements.

Product Features

No Welding Required

Threaded connection design enables:

• Easy installation
• Reduced installation time
• Simple maintenance and replacement

Flexible Thread Options

Available thread types:

• NPT (National Pipe Thread)
• BSPT (British Standard Pipe Thread Tapered)
• BSPP (British Standard Pipe Parallel)

Customized thread requirements available.

Suitable for Specific Applications

Ideal for:

• Small diameter piping systems
• Low-pressure services
• Fire protection auxiliary systems
• Instrumentation piping
• Utility pipelines

Available Standards

ASME / ANSI Standards

• ASME B16.5

European Standards

• EN 1092-1

Japanese Standards

• JIS B2220

Thread Standards

• ASME B1.20.1 (NPT)
• ISO 7-1 (BSPT)
• ISO 228-1 (BSPP)

Materials

Carbon Steel Threaded Flange

Common Materials:

• ASTM A105

Applications:

• General industrial piping
• Water systems
• Oil & gas auxiliary systems

Stainless Steel Threaded Flange

Common Materials:

• ASTM A182 F304
• ASTM A182 F316

Applications:

• Corrosive environments
• Chemical processing
• Food and pharmaceutical applications

Alloy Steel Threaded Flange

Available for:

• Higher temperature services
• Special industrial applications

Product Specifications

Facing Types

Raised Face (RF)

Common for industrial threaded flange applications.

Flat Face (FF)

Used where full-face contact is required.

Applications

Threaded flanges are widely used in:

Fire Protection Systems

• Sprinkler auxiliary piping
• Small diameter connections

HVAC Systems

• Utility piping
• Equipment connections

Water Treatment

• Small pipeline systems

Oil & Gas

• Instrumentation systems
• Non-critical auxiliary lines

Industrial Facilities

• Compressed air systems
• Utility piping

Limitations of Threaded Flanges

For professional buyers, it is good to mention:

Threaded flanges are generally not recommended for:

• High-pressure cyclic applications
• High-temperature services
• Severe vibration environments

For these applications, weld neck flanges or socket weld flanges are usually preferred.

This type of technical explanation increases customer trust.

Why Choose DTC Threaded Flanges?

Reliable Manufacturing

Factory-backed production with strict dimensional control and inspection.

Multiple Thread Standards

Supporting NPT, BSPT and customized requirements.

Flexible Material Options

Available in carbon steel, stainless steel and alloy steel.

Complete Piping Solutions

DTC provides a full range of industrial flanges, pipe fittings, valves and flow system components for global projects.