A flange is a type of flange that has a large diameter. They are widely used and promoted in a variety of industries, including machinery, chemistry, wind energy, and sewage treatment. They are highly regarded and appreciated by their customers. The use of large diameter flanges is widespread. Carbon steel, stainless steel, and alloy steel are the most commonly used materials for large-diameter flanges. The manufacturing process is divided into two stages: rolling and forging, with the exception of the super large flange, which is only capable of being rolled. It is primarily used for low-pressure unrefined compressed air and low-pressure circulating water in medium-temperature environments, and it has the advantage of being relatively inexpensive.

It is appropriate for connecting steel pipes with nominal pressures not exceeding 2.5MPa when using a smooth roller flange. The sealing surface of a rolled flange can be smooth or textured depending on the application. Smooth wound flanges have a thick layer of coating on them. The other two types of coil flanges are also widely used in a variety of applications.

Products with a large diameter flange are classified according to their characteristics.

Flat welding flanges and butt welding flanges are two types of large diameter flanges that are commonly used. There are no threaded flanges with large diameters available. When it comes to actual production and sales, flat welding products account for a significant portion of both. Because of the differences in their structural designs and application ranges, the characteristics and advantages of flat welding large diameter flange and butt welding large diameter flange are distinct from one another. As a result, flanges must be used in a variety of applications to ensure that they play an important role. Under pressure of P  4MPa, a large diameter flat welding flange is suitable for applications requiring low stiffness. Butt welding flanges are a type of flange with a high neck. This material is suitable for high pressure and high temperature applications due to its high rigidity.

For low-pressure media, a flat sealing surface is required. It is suitable for sealing surfaces with concave and convex contours that require a slightly higher pressure. With its tenon sealing surface and high pressure capability, it is suitable for flammable, explosive, and toxic media. Flange sealing surfaces are classified into three types, as shown in the diagram. It provides excellent product performance in different regions and has a varying impact on different applications and spaces depending on the region. A different aspect of flange pipe fittings with different characteristics in various fields and applications is discussed in this section.

The manufacturing characteristics and primary functions of large diameter flanges are as follows:

For water pipes and bolt holes, large-diameter flange can be used to cut into the middle slats, roll them into circles, and perform post-treatment on them. Typically, this is a large flange approximately 7 meters in length, made of medium density wood as the raw material. Carbon steel, stainless steel, alloy steel, and other materials are used to construct large diameter flanges.

What exactly is the flange quality assurance process?

The following is the quality process for large-diameter flanges: large-diameter flanges manufactured by various methods have advantages and disadvantages, but the exact nature of these advantages and disadvantages is unknown. It is critical to consider the joint position when fabricating large-diameter flanges on the intermediate plate. Leakage can occur if the welding is done incorrectly in this position. The skin of the forged large-diameter flange will appear on the flange after it has left the factory after it has been formed. If the bolt hole is precisely aligned with the position of the layer skin, reducing the pressure will result in water leaking through the hole.