The reliance on the various types of flanges used in the oil and gas industry is critical in ensuring the integrity of the joints. A recent customer survey revealed that the respondents "indicated that every joint in their plant is critical, and that there is zero-tolerance for any type of leakage whatsoever," according to a report published by Garlock, one of the world's leading manufacturers of gaskets in 2008.

After seven years in a world that has experienced significant cost-cutting as a result of the global financial crisis and which has a perilously low oil price, it is reasonable to assume that such attitudes toward leaks have not changed.

The ability to recognize and understand joints, connections, and the most common types of flanges used in the oil and gas industry is essential to maintaining these levels of safety and attitudes. Here are six of the most common flange types, along with a description of what they are best suited for, to ensure that you are always familiar with them:

Tweezers are used to join parts together.
These flanges, which feature a tapered hub, are easily identifiable and are frequently used in high-pressure applications. Using the flange is especially beneficial when bending is repeated.

Sneakers that are easy to put on and take off.
To increase strength and prevent leakage, a ASME Flange  is slipped over a pipe and welded on both the inside and the outside. The weld-neck is a less expensive alternative that engineers prefer over the flange.

Flanges used in the oil and gas industries are classified into the following categories: 1.

a lap joint is a joint that connects two pieces of metal together
In contrast to the slip-on flange, which is used in conjunction with a lap joint stub end, the slip-on flange is simply slipped over the pipe and not secured. A gasket is used to keep the flange firmly in place, and this pressure is transmitted to it via pressure exerted on it by the flange against the back of the pipe lap.

Embedded in a nutshell
It is possible to attach the threaded flange to the pipe without welding when used in specific circumstances. In order to create the internal thread, these are typically mounted on pipes with a thick wall thickness and are used to position them.

 

TPC-compact-flange-WN-WN.jpg



Deaf and hard of hearing
With no bore, these flanges are used to seal the ends of piping, valves, and pressure vessel openings that need to be blanked. Aside from that, they are the most appropriate for applications involving high pressure and temperature.

Sockwelding is a type of welding in which a socket is welded to another socket.
The Socket-weld is connected to the pipe with 1 fillet weld on the outside of the flange and has a static strength equal to that of the Slip-on flange. Several processes prohibit the use of this flange due to corrosion concerns.

Machinists who work with flange faces

Take a look at the Flange Facing Machines from flangeschina to learn more about the machines that can be used to create the proper sealing surface on flange connections.