threaded flange

threaded flange

Threaded flanges are used to connect pipes or valves to other components. These flanges have internal threads that match the threads of the corresponding pipe. Typically, they are used when welding is not practical or desirable. The Locus threaded flanges are precision-made, providing a reliable and durable solution for pipe system connections.

Brand: Locus
Material: Carbon Steel, Stainless Steel, Alloy Steel, or Customized
Size Range: 1/2″ to 48″ (Custom sizes available)
Standard: ANSI B16.5, ANSI B16.47, DIN, JIS
Pressure Class: 150, 300, 600, 900, 1500, 2500
Finish: Plain, Galvanized, Coated
Connection Type: Threaded
Applications: Pipe Fittings, Valves, Industrial Equipment, Construction
Certification: ISO 9001:2015, CE Certified, RoHS, REACH Compliant
Custom Options: Yes (Available as per specifications)

Description

1. Description

2. Specifications

Feature	Specification
Material	Carbon Steel, Stainless Steel, Alloy Steel (Customizable)
Size Range	1/2″ to 48″
Thread Type	BSPT, NPT, or Customized
Pressure Rating	150 to 2500 Class
Standards	ANSI B16.5, ANSI B16.47, ASME B16.1, DIN 2576
Bolt Holes	4 to 12 (depending on size)
Finish	Plain, Galvanized, Powder Coated, Painted
Surface Treatment	Shot Blasting, Sand Blasting
Certification	ISO 9001:2015, CE, RoHS, REACH

3. Working Principle

Threaded flanges work by providing a secure and tight connection between a pipe and other equipment. The threaded connection ensures a leak-proof seal under standard working pressures. The threads on both the flange and the mating pipe are precisely machined to ensure a perfect fit. The threaded flange is screwed onto the pipe and bolted into place with a gasket between the flange faces to prevent leaks.

4. Principle

The threaded flange is based on a mechanical principle of friction and pressure to create a reliable seal. The threads on the inner side of the flange allow for easy installation and disassembly without the need for welding, making it suitable for applications where welding may not be practical. The sealing efficiency is enhanced by the flange’s pressure rating and the gasket placed between flanges.

5. Assembly Process

Prepare Components: Clean the flange, gasket, and mating surfaces of the pipe.
Position the Gasket: Place the gasket between the two flanges.
Thread the Flange: Screw the threaded flange onto the corresponding pipe thread.
Tighten the Flange: Use a wrench to tighten the flange securely.
Verify Tightness: Ensure the flange is securely attached to prevent leakage.

6. Installation Process

Preparation: Ensure the pipe and threaded flange are free from debris and properly cleaned.
Positioning: Align the flange with the pipe or equipment to which it will be connected.
Threading: Screw the flange onto the pipe manually or with a wrench.
Sealing: Place the appropriate gasket between the two flanges to prevent leakage.
Torque Application: Tighten the flange bolts to the recommended torque specifications.
Final Check: Inspect the assembly for any potential gaps or misalignments.

7. Technical Specifications

Property	Specification
Thread Size	1/2″ to 48″
Pressure Rating	150, 300, 600, 900, 1500, 2500
Temperature Resistance	-20°C to 250°C (depending on material)
Material Strength	ASTM A105, ASTM A182, ASTM A350
Surface Treatment	Galvanized, Epoxy Coated
Finish	Smooth, Shot-blasted, Painted

8. Troubleshooting

Leakage:
- Check if the gasket is in good condition and properly positioned.
- Ensure the threaded flange is properly tightened without over-torquing.
- Inspect the mating pipe for any damage or imperfections.
Misalignment:
- Recheck flange alignment with the mating pipe.
- Adjust the flange position as necessary before tightening.
Excessive Vibration:
- Use additional vibration pads or supports to stabilize the connection.

9. HS Codes

HS Code for Threaded Flange (General): 730721
HS Code for Steel Threaded Flanges: 73072190
HS Code for Stainless Steel Threaded Flanges: 73072120

10. FAQ (Frequently Asked Questions)

Q1: What is the difference between a threaded flange and a welded flange?
A1: Threaded flanges have internal threads that allow for easy screwing onto the pipe, while welded flanges require welding to join the pipe to the flange. Threaded flanges are ideal for applications where welding is not preferred.

Q2: Can threaded flanges be used for high-pressure applications?
A2: Yes, Locus threaded flanges come in various pressure classes, including 150, 300, 600, and higher. It’s important to choose the right pressure class based on your application.

Q3: Are custom sizes available?
A3: Yes, Locus manufactures threaded flanges in custom sizes as per the customer’s specifications.

Q4: Do threaded flanges require gaskets?
A4: Yes, gaskets are used to create a leak-proof seal between two flanges.

11. Applications

Piping Systems: Used to connect pipes in water, oil, and gas industries.
Valves: Used in valves and regulators for secure sealing.
Automotive & Industrial Equipment: Utilized in machinery for easy maintenance and connection.
Construction: Used for connecting pipes in construction sites where welding is impractical.
Marine and Offshore: Suitable for use in shipbuilding and offshore platforms due to their ease of installation.

Locus Brand Considerations

- Quality Assurance: Manufactured under strict ISO 9001:2015 quality management standards.
- Customization: Available in custom materials, sizes, and finishes to meet specific client requirements.
- Certifications: All products are CE certified, RoHS compliant, and manufactured using certified raw materials.