Flange Castings Made in China
Flange is also called as flange plate,
which is normally used for connecting two pipes together through the
bolts or the welding method.
The flanges are available in various
shapes and the most common ones include rectangular, oval and round.
The type of flanges includes welding neck flange, slip on flange,
socket weld flange, lap joint flange, threaded flange and blind
The materials of
The materials of flanges include
ductile iron, cast steel,
carbon steel, and stainless steel, of which grey iron and ductile
iron are the most common materials.
The most of flanges are usually made by
grey iron. They have good corrosion resistance, wearing resistance,
and it is very strong, non-deformation. Moreover, the cost of grey
cast iron is cheap.
The ductile iron flange is more expensive than grey iron, but it has
better strength and elongation.
The application of
Flanges are commonly used in plumbing systems, water systems,
electrical factory, pipe connection and building construction etc.
It is convenient for maintenance and its life time is long. Flanges
help to keep the pipes stay strong without the risks of leakage.
In high pressure zones, welded flanges can prevent the pipes from
corrosion, but they will reduce flow rate. In low pressure areas, it
is recommended to use flanges with bolts as it facilitates smooth
The surface treatment
The surface of flange should be used rust resistant coating, such as
electro galvanizing, bituminous paint, powder coating and so on. All
these coatings could prevent rust effectively.
In general, sand casting process
is fitted for the manufacture of flange. The necessary machining
will be needed to meet the requirement of flatness. In China, most
of iron foundries could
produce flange castings.
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