Weld neck flanges are the most common type of flange, consisting of a neck extension with a weld bevel at the end of the neck. This style of flange is intended to be butt welded directly to pipe in order to provide a superior and more natural-looking connection. This is the type of flange connection that is almost exclusively used in larger sizes and higher pressure classes. If there was only one type of bored flange available in today's applications, the weld neck would be the flange of choice.

In a V-type connection, the weld bevel connects to a pipe end with a comparable bevel, allowing for a uniform circular weld around the perimeter to create a unified transition. This allows the gas or liquid contained within the pipe assembly to flow through the flange connection with the least amount of restriction. It is necessary to inspect this weld bevel connection after it has been welded to ensure that the seal is uniform and free of abnormalities.

The tapered hub is another prominent feature of the Weld Neck Flange. In contrast to other types of connections, this style allows for a more gradual distribution of pressure pressures along the transition from pipe to flange base, which can help to withstand some of the shock associated with operating in a high pressure and high temperature working environment. The increased steel mass at the hub transition reduces the mechanical stresses that occur there.

Due to the fact that higher pressure classes almost exclusively require this type of flange connection, weld neck flanges are commonly manufactured with a ring type joint facing (also known as RTJ face) (also known as RTJ face). This sealing surface enables a metallic gasket to be crushed between the grooves of both connecting flanges, resulting in a superior seal that complements the high strength weld bevel connection to the pressurized pipe assembly. When it comes to critical applications, an RTJ weld neck with a metal gasket join is the best option.

NECK FLANGES WITH LONG WELDING

They were also known as nozzle flanges and long neck flanges, and they were designed specifically for the pressure and tank manufacturing industries. They are typically constructed as a single piece to eliminate the need for a traditional soldering neck and welding pipe combination. The absence of a required solder connection is the defining characteristic of this flange design.

They typically have a straight line with a square finish (as opposed to the typical weld neck bevel) and are made of steel. The bore size of the long neck is usually the same as the bore size of the actual nominal pipe, but it can be changed if needed weld neck pipe flanges. The total length of the bust is also up to the discretion of the end user, and the body of the bust can be adjusted for additional reinforcement to some preexisting sizes or tailored sizes. Because the base of the neck, which is connected to the base of the flange, has been gently radiated, the abrupt perpendicular connection between the two parts of the flange has been alleviated, and the idea of an enhanced one-part structure has been strengthened.

This type of flange design is referred to as street hub welding flanges in accordance with ASME B16.5, subsection 2.8, even though the governing regulation provides little specificity. This is due to the fact that long welded necks are selected for each application based on the specific engineering requirements of a given tank or pressure vessel. The working pressure, temperature, and media of the vessel are all important considerations when determining the type of long neck flanges you require.