Socket-Weld Flanges has a female socket in which pipe is fitted. Fillet welding is done from outside on the pipe.[……]

Socket-Weld Flanges has a female socket in which pipe is fitted. Fillet welding is done from outside on the pipe.[……]
Weld-Neck flanges or welding-neck flanges can be differentiated from all other types of flange by their long tapered hub.[……]
Threaded flanges look very similar to Slip-On flanges but the main difference is that the threaded flange has been was bored out to match a specific pipe inside diameter. [……]
Slip-On flanges or SO flanges are commonly lower in price than weld-neck flanges, and to this effect are a popular choice for our customers. However, customers should bear in mind that this initial cost saving may be diminished by the additional cost of the two fillet welds required for proper installation.[……]
Lap Joint Flanges (LJ Flanges) are used on piping fitted with lapped pipe or with lap joint stub ends the combined initial cost of the two items being approximately one-third higher than that of comparable welding neck flanges.[……]
Blind pipe flanges are pipe flanges used to seal the end of a piping system or pressure vessel openings to prevent flow. Blind pipe flanges are commonly used for pressure testing the flow of liquid or gas through a pipe or vessel. [……]