Flange is a method of connecting pipes, valves,
pumps and other equipment to form a piping system.
Welding Neck Flange
Butt welded onto the end of a pipe,
providing a flange that is suitable for high temperature and pressure.
Slip On Flange
Have a plain hole but without the shoulder.
Fillet welds are added to the pipe on both sides of the flange.
Socket-Welded Flanges
Have a plain hole with a shoulder at the bottom.
The pipe is inserted into the hole to butt against the shoulder and
then welded into place with a fillet weld around the outside.
It is used for small-diameter pipes operating at low pressure.
Lap Joint Flange
Consists of two parts; a stub end and a backing flange.
The stub end is butt-welded to the end of the pipe and includes a
small flange without any holes.
Theraded Flange
Have an internal (female) thread, a threaded pipe screwed into it.
It is relatively easy to fit but is not suitable for high pressure and temperature.
Blind Flange
A form of a blanking plate that is bolted to another pipe flange to
isolate a section of piping or to terminate piping.