TOBO STEEL GROUP CHINA |
Verified Suppliers
|
|
304 Stainless Steel Elbow 90 ° Bend Inner Wire Outer Wire Inner Wire 4 Min 6 Min 1 Inch Water Pipe Fittings 6 Min Double
1. Since most pipe fittings are used for welding, in order to
improve the welding quality, the end parts are beveled, with a
certain Angle and a certain edge. This requirement is also strict.
The surface quality and mechanical properties are basically the
same as pipes. For the convenience of welding, the pipe fittings
are of the same steel grade as the pipe to be connected.
2. All pipe fittings should be surface treated. The iron oxide on
the inner and outer surfaces should be sprayed off by shot peening,
and then coated with anticorrosive paint. This is for export needs,
moreover, in order to facilitate transportation to prevent
corrosion and oxidation, we must do this work.
3, is the packaging requirements for small pipe, such as export,
you need to do wooden cases, about 1 cubic meter, the number of
elbows in the box can not exceed about a ton, the standard allows
the set, that is, a large set of small, but the total weight
generally can not exceed 1 ton. For large pieces y needs to be
packed individually, like 24 "must be packed individually. Another
is the packaging mark, the mark is to indicate the size, steel
number, batch number, manufacturer's trademark, etc.
Hot push elbow forming process is the use of special elbow push
machine, core die and heating device, so that the billet set on the
mold in the push of the machine to move forward, in the movement of
heating, expanding and bending forming process. Hot push bend
deformation characteristics are based on volume before and after
plastic deformation rule of metal materials determine the pipe
diameter, pipe diameter bend diameter, through the core module and
control the deformation of the process, make the inner arc
compressed metal flow, the compensation to other parts of the
thinned by hole diameter, wall thickness uniform Angle is obtained.
Hot push elbow forming process has the characteristics of beautiful
appearance, uniform wall thickness and continuous operation,
suitable for mass production, so it has become the main forming
method of carbon steel, alloy steel elbow, and also used in the
forming of some specifications of stainless steel elbow.
The heating method of forming process has medium frequency or high
frequency induction heating (heating ring can be multiple or single
ring), flame heating and reflector heating, which heating method
depends on the requirements of forming products and energy
conditions.