Pipe Flange

A pipe flange is a disc, collar, or ring that attaches to a pipe with the
purpose of providing increased support for strength, blocking off a
pipeline, or implementing the attachment of more items. Pipe flanges are
usually welded or screwed to the pipe end and are connected with bolts.


A gasket is inserted between the two mating flanges to provide a tighter
seal. Pipe flanges are either custom with dimensions provided by the
customer or they are manufactured according to published specifications.
Several organizations and associations have published specifications that
provide dimensional information as well as pressure specifications at
different temperatures.


Slip-on pipe flanges actually slip over the pipe. These pipe flanges are
typically machined with an inside diameter of the pipe flange slightly
larger than the outside diameter of the pipe. These pipe flanges are also
further categorized as a ring or a hub.
Slip-on Pipe flanges with a hub have published specifications that range
from 1/2″ thru 6″.
Slip-on pipe flanges that consist of a flat ring have published
specifications that range from 1/2″ through 144″.


Weld neck pipe flanges are attached to the pipe by welding the pipe to the
neck of the pipe flange. This allows for the transfer of stress from the
weld neck pipe flanges to the pipe itself. Weld neck pipe flanges are often
used for high-pressure applications. The inside diameter of a weld neck
pipe flange is machined to match the inside diameter of the pipe. Weld Neck
Pipe flanges with a hub have published specifications that range from 1/2″
through 96“


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.
Blind pipe flanges also allow easy access to the pipe in the event that
work must be done inside the line. Blind pipe flanges are often used for
high-pressure applications.
Slip-on Pipe flanges with a hub have published specifications that range
from 1/2″ thru 96″.


Lap Joint Pipe 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.
The benefit of this is that there will not be any issues with bolt-hole
alignment. Lap Joint pipe flanges are often used for applications that
require frequent dismantling.
Range from 1/2″ thru 24″. Sizes above 24″ are produced as lap joints to
slip on dimensions.


Threaded pipe flanges are similar to slip-on pipe flanges except for the
bore of the threaded pipe flange has tapered threads.
Threaded pipe flanges are used with pipes that have external threads. The
benefit of these pipe flanges is that they can be attached without welding.
Threaded pipe flanges are often used for small-diameter high-pressure
Range from 1/2″ thru 24″.


Socket-weld pipe flanges are typically used on smaller sizes of
high-pressure pipes.
These pipe flanges are attached by inserting the pipe into the socket end
and applying a fillet weld around the top. This allows for a smooth bore
and better flow of the fluid or gas inside of the pipe.
Range from 1/2″ thru 24″. provides Socket
Weld pipe flanges in all material grades, specifications, and sizes


Ball valves not only control fluid in flow lines, but they also regulate
production – and ultimately, profits.
Whether you’re a retailer of ball valves or you work in the field, the oil
and gas industry demands reliable products and timely delivery. At Prism
Flow Products, we sell the highest quality resilient and metal-seated ball
valves on the market


The design of gate valves makes them ideal for the free flow of fluid when
the minimum restriction is desired. When a gate valve is wide open, the
gate is completely drawn up into the valve body, allowing for
pressure and flow through the valve that is consistent with the attached
Gate valves are classified as either rising or non-rising stem valves. A
non-rising stem valve has its stem threaded on the lower end into the gate.
Gate valves are available in a threaded or flanged gate valve design.


From a 1/4″ to a 20″ globe valve, straight flow, or angle flow globe valve,
let the professionals at Cyvino do the work for you.
We understand the demands of your industry, as well as how pressure,
temperature, and controlled media properties affect the choice of product


Metallic Gaskets
Ring Joint Gaskets
Kammprofile RTJ
Specialty Machined Products
Semi-Metallic Gaskets
Spiral Wound Gaskets
Kammprofile Gaskets
Corrugated Metal Gaskets
Jacketed & Metal Gaskets
High Temperature Gaskets
Non-Metallic Gaskets
Elastomeric & Fiber
Compressed Sheet Material
Flexible Graphite
High Temperature Sheet
Sealing Isolation Gaskets


Wide Flange Beams
Angle Iron
U channel