Loose flanges

Loose flanges with a welding ring: specifications, dimensions, and applications. Select and order loose flanges on the SalesSolution website with delivery to the destination point. ASME loose flanges are used to connect pipelines with the ability to adjust alignment and compensate for axial displacement. They are applied in systems where precise fitting of components is required or where temporary connections are needed during installation and maintenance of equipment. The flanges are manufactured from carbon steel, stainless steel, as well as duplex and super duplex alloys, ensuring resistance to high pressure, temperature fluctuations, and aggressive environments. The products comply with international standards such as ASME B16.5 and ASME B16.47, making these flanges an optimal solution for demanding industrial conditions. Deliveries are carried out on schedule, supporting the implementation of projects of any complexity.

ASME loose flanges: types and characteristics

Loose flanges differ in design and in the method of attachment to the pipe. The main options include:

- flanges with a flat face;

- flanges with raised faces for sealing gaskets;

- models with bolt holes for bolted connections.

ASME B16.5 and ASME B16.47 standards regulate dimensions, wall thickness, bolt hole location, and allowable tolerances, ensuring reliable sealing and compatibility with other system components. The use of certified steels according to ASTM A105 (carbon steel) and ASTM A182 (stainless and alloy steels) ensures durability and stable pipeline operation.

ASME loose flanges with a backing ring: selection and application

When selecting an ASME loose flange, the pipe diameter, operating pressure, and the temperature of the transported medium must be considered. Designs with a backing ring allow compensation of axial displacement, simplify pipeline installation and dismantling, and reduce the risk of damage during operation. Compliance with ASME and EN standards ensures precise matching with pipes and fittings. Such flanges are widely used in the oil and gas, chemical, and power generation industries, where connection reliability determines operational safety and continuity.

FAQ

1. What is a loose flange?

A loose flange is a pipeline connection element installed on a welded backing ring (stub end). It slides freely over the pipe, which makes alignment and maintenance of the connection easier.

2. What is the difference between a loose flange and a flat flange?

A flat flange is welded directly to the pipe, while a loose flange is mounted on a welded stub end. This design makes loose flange connections easier to dismantle and replace, especially in confined spaces.

3. Where are flanges with a welded ring used?

Loose flanges are used in systems with aggressive media, high temperatures, or high pressure, as well as in installations where quick maintenance or pipeline disassembly is required.

4. What diameters and standards are available for loose flanges?

Loose flanges are produced in a wide range of diameters—from DN 15 to DN 1200 mm and above. The main standards include DIN, EN, and ANSI. The selection depends on the type of pipeline, operating pressure, and service conditions. Our catalog includes flanges for different sizes and standards, from low- to high-pressure systems.

5. Is it possible to purchase stainless steel loose flanges?

Yes, stainless steel loose flanges in various diameters and configurations are available. They are suitable for aggressive environments and food processing applications. Provide the required specifications, and we will assist with selection.

Comments

Comment 1: Are loose flanges suitable for pipeline installation in aggressive environments?

Yes, stainless steel loose flanges are well suited for aggressive environments. They are often used in chemical and oil refining facilities due to their resistance to corrosion and temperature fluctuations.

Comment 2: Why are loose flanges well suited for the oil, gas, and chemical industries?

Loose flanges allow pipelines to be assembled and disassembled without shifting the pipes, which simplifies maintenance and equipment repair in complex industrial conditions. On the SalesSolution website you can find flanges designed to withstand high pressure and aggressive environments.