WN flange stands for Weld Neck flange. It is a type of flange that is welded to the pipe or equipment it is attached to. The weld neck flange is designed with a taper hub that provides a smooth transition from the flange to the pipe or equipment, reducing stress concentration and increasing the strength of the joint. It also has a raised face or flat face for connecting to another flange or sealing surface with gaskets. WN flanges are commonly used in high-pressure and high-temperature applications.
A slip-on flange is a type of pipe flange that is designed to be slipped over the end of a pipe and then welded in place. It has a flat face and is typically used to connect pipes or fittings of the same nominal pipe size. The slip-on flange provides an easy way to align the pipe and secure it with welds, making it ideal for low-pressure applications. It is commonly used in industries such as oil and gas, petrochemical, and water treatment.
A blind flange is a type of flange that is used to seal the end of a pipe or vessel in order to prevent flow. It is called a “blind” flange because it does not have a bore or opening in the center. Instead, it is a solid disk with bolt holes around the perimeter for bolting it to another flange or equipment.Blind flanges are commonly used in piping systems where the end of a pipe needs to be closed off temporarily or permanently. They are often used during construction or maintenance activities, or when a section of the pipeline is not currently in use. Blind flanges can also be used to close off the end of a pipe or vessel to prevent contamination or to isolate a section of the pipeline for testing or inspection purposes.Blind flanges come in various sizes and materials to suit different applications and operating conditions. They are typically made from carbon steel, stainless steel, or other alloys that can withstand the pressure and temperature requirements of the system.When installing a blind flange, the bolts are inserted through the bolt holes and tightened to create a tight seal. Gaskets are often used between the flange faces to provide an additional barrier against leakage.Overall, blind flanges are essential components in piping systems that allow for safe and efficient operations by providing a reliable closure for pipes and vessels when necessary.