Flange Overview

We offer most types of flanges for a pipeline, including pipe flanges, industrial flanges. A flange is used for connecting pipes, valves, pumps, and other equipment to form a piping system. It can also be easily cleaned, inspected, or modified. They are usually welded or threaded.

Screw the two flanges together with gaskets to ensure sealing. Flange types The most commonly used flange types in the petroleum and chemical industries are: butt welding flanges, socket flanges, Overlapping flange, Overlapping connecting flange, Threaded flange, Blind flange. The most commonly used flange type in the petroleum and chemical industries.

All types except overlapping industrial flanges have raised flange surfaces. Butt welding flange welding/Threaded Flanges, Sliding Flanges, Reducing Flanges, Special Flanges, Flange Materials, Pipe flanges are made of various materials, such as stainless steel, cast iron, aluminum, brass, bronze, plastic, etc.

Pipe Flanges

However, the most commonly used material is forged carbon steel, whose surface has been treated. For example, sometimes pipe fittings and pipelines are covered with a material layer of completely different quality from the flange itself. For some purposes, the flange is a “composite flange”.

The flange material is mainly determined when selecting the pipe. In most cases, the Industrial flange is made of the same material as the pipe. Unless otherwise noted, all Pipe flanges we offer are ASME and ASTM standards.

ASME B16.5 describes dimensions, dimensional tolerances, etc., while ASTM describes various qualities of materials. Flange size Each ASME B16.5 flange has a variety of standard sizes. Pipeline installers in Canada or Australia mostly use NPS 6, Class 150, Schedule 40 ASME B16.5 weld neck flanges.

Industrial Flanges

When Industrial flanges are needed, the supplier wants to know the quality of the material. For example, ASTM A105 is a forged carbon steel flange, and A182 is a forged stainless steel flange. It is created by the mechanics in the workplace using the tools, procedures, and working conditions we provide. Moreover, the mechanic is the ultimate and important power creator, and the moment of creation coincides with time.

We need to understand this process. Over the years, the industry has recognized the importance of installation and assembly. In Europe, the focus is on ensuring that connections are made by trained and certified technicians, which led to the publication of a European technical standard: TS EN 1591, part 4 entitled “Flanges and Connections”.

Design rules for packing circular flange connection. Personnel qualifications for assembling screw connections in equipment subject to the Pressure Equipment Directive (PED)”. This standard provides methods for the training and evaluation of technicians involved in the manufacture and destruction of flange connections, which can be regarded as similar to pressure vessel operations.

Their publication shows the importance of effective control of the gasket manufacturing process to ensure flange tightness. Screening. Even if all the complex interlocking parts of the threaded flange connection are perfectly coordinated, this is the most important factor in the success or failure of the threaded flange connection.

Bolt Flange Connection

Bolt flange connection is a complex combination of many factors (flanges, screws, seals, process, temperature, pressure, medium). All these elements are interrelated, and interdependence can lead to success. Flange connections mainly depend on proper control of the connection manufacturing process.

Flange Seals

Even if all the complex interconnecting components of the bolted flange connection are perfectly coordinated, the seal is one of the many reasons why the bolted flange connection may leak. This is the most important factor for the success or failure of the bolted flange connection. When installing the seal, pay attention to the correct installation and installation procedures. If operated correctly, the components will remain sealed for the expected life.
Types of
  1. Threaded Flanges
  2. Socket-Weld Flanges
  3. Slip-On Flanges
  4. Lap Joint Flanges
  5. Weld Neck Flanges
  6. Blind Flanges
  7. Reducing Flange
  8. Expander Flange
  9. Flangeolet / Weldoflange / Nippoflange