Flanges and Stub Ends
SEPL can supply Stainless Steel Flanges of different shapes and sizes and with different
specifications as per the customers' requirement. We cater to the huge global demand
of our customers who are spread the continents.
We can supply all types of pipe fittings i.e. flanges, butt welding fittings in
various specifications (ASME/ ANSI, EN, DIN, AFNOR, AWWA, GOST, BS, JIS, AS, MSS,
SA, UNI ETC) aswell as forged bars.
We produce flanges in the size range from ½" to 40".
We can supply various types of flanges namely:
Blind Flange :
A Blind flange is round plate which has all of the relevant boltholes but no centre
hole, and because of this feature this flange is used to close off the ends of a
piping systems and pressure vessel openings. It also permits easy access to vessels
or Piping systems for inspection purposes.
Weld Neck Flange :
Weld Neck Flanges have a long tapered hub and are often used for high pressure applications.
These flanges are designed to be joined to a Piping system by Bun Welding. The Neck,
or Hub, transmits stresses to the Pipe, reducing stress concentrations at the base
of the Flange. The gradual transition of thickness from the base of the Hub to the
wall thickness at the Bun Weld, provides important reinforcement of the Flange.
The bore of the Flange matches the bore of the Pipe, reducing turbulence and erosion.
These flanges are ideal for extreme fluctuations of temperature and in environments
where there may be high pressure or high temperature being dealt with.
Slip-on Flange :
These are easily fitted and welded into different pipes. Slip on pipe flange is
slipped over the Pipe and then welded both inside and outside to provide sufficient
strength and prevent leakage. These flanges are ideal for lower pressure applications.
This Flange is used in preference to Weld Necks by many users because of its lower
cost and the fact that less accuracy is required when cutting pipe to length.
Socket Weld Flange :
These flanges are attached by inserting the pipe into the socket end. This allows
for a smooth bore and better flow of the fluid or gas inside of the pipe. Socket-weld
pipe flanges are mainly used for smaller sizes of high pressure pipes.
Threaded Flange :
Threaded flanges are similar to slip-on pipe flanges except the bore of threaded
pipe flange has tapered threads. These flanges are ideal for relatively low pressure
piping systems. Threaded flanges are used with pipes that have external threads.
The benefit of these pipe flanges is that it can be attached without welding.
Lap Joint Flange :
Lap Joint Flanges slide over the pipe and are most commonly used with Stub End Fittings.
A pipe is typically welded to the Stub End and the Lap Joint pipe flange is free
to rotate around the stub end. Lap Joint pipe flanges are often used for applications
that require frequent dismantling. Threaded pipe flanges are often used for small
diameter, high pressure requirements.
Orifice Flange :
Orifice Flanges are used instead of standard pipe flanges when an orifice plate
or flow nozzle must be installed. Pairs of pressure tappings are machined into the
orifice flange, making seperate orifice carriers or tappings in the pipe wall nexessary.
In addition to these we also supply Orifice Flange, Stub-end fittings, plate flanges,
backup flanges, Beveled ID flanges and Reducing flanges.