TOBO STEEL GROUP CHINA |
Verified Suppliers
|
|
Stainless Steel Flange Stainless Steel FLANGE DN40 Flange Flat Welding Flange Butterfly Valve Flange Dual Phase Steel
Flange is also called flange or flange.
The part that connects the pipe to the pipe is connected to the
pipe end. There are holes in the flange and bolts hold the two
flanges together. Gasket seals between flanges. Flanged pipe
fittings refer to pipe fittings with flanges (edges or plates). It
may be cast, threaded or welded. Flange, joint is composed of a
pair of flange, a flange and a number of bolts and nuts. The gasket
is placed between the two flange sealing surfaces. After tightening
the nut, the specific pressure on the surface of the gasket is
deformed after reaching a certain value, and the uneven place on
the sealing surface is filled, so that the connection is tight and
leakproof. Flange connection is a removable connection. According
to the connected parts can be divided into container flanges and
pipe flanges. According to the structure, there are integral
flanges, looping flanges and threaded flanges. Common integral
flange has flat welding flange and butt welding flange. Flat
welding flange rigidity is poor, suitable for pressure P ≤4MPa
occasions; Butt welding flange, also known as high neck flange, is
more rigid, suitable for high pressure and temperature occasions.
There are three types of flange sealing surface: plane sealing
surface, suitable for pressure is not high, non-toxic media
occasions; Concave and convex sealing surface, suitable for
slightly higher pressure occasions; Tenon groove sealing surface,
suitable for flammable, explosive, toxic medium and high pressure
occasions. Gasket is a kind of ring which can produce plastic
deformation and has a certain strength. Most of the gaskets are cut
down from non-metallic plates, or made by professional factories in
accordance with the specified size, its materials are asbestos
rubber sheets, asbestos sheets, polyethylene sheets, etc. Also
useful thin metal plate (iron sheet, stainless steel) asbestos and
other non-metallic materials wrapped up made of metal gasket; There
is also a winding gasket made of thin steel tape and asbestos tape
wound together. Ordinary rubber gasket is suitable for the occasion
of temperature below 120℃; Asbestos rubber gasket is suitable for
water vapor temperature is less than 450℃, oil temperature is less
than 350℃, pressure is less than 5MPa occasions, for the general
corrosive medium, the most commonly used is acid resistant asbestos
plate. In high pressure equipment and pipelines, the use of copper,
aluminum, no. 10 steel, stainless steel made of lens type or other
shape of metal gaskets. The contact width of high-pressure gasket
and sealing surface is very narrow (linear contact), and the
processing finish of sealing surface and gasket is high.
Flange thread connection (wire connection) flanges and welded
flanges and clamp flange. Low pressure small diameter threaded
flange and sleeve flange, high pressure and low pressure large
diameter are welded flange, flange thickness and connecting bolt
diameter and number of different pressure is different.