6% Thickness Tolerance Hydraulic Elbow Carbon Steel Buttweld A234
Wpb Seamless Pipe Fittings
For the carbon steel elbow, Manufacturers commonly used seamless elbow forming process hot push, stamping, extrusion and so on.The
hot-bending bending head forming process adopts a special elbow
pushing machine, a mandrel and a heating device, so that the billet
placed on the die is moved forward by the pushing machine, heated,
expanded and bent during the movement. the process of. The
deformation characteristics of the thermal pusher elbow is to
determine the diameter of the blank according to the constant
volume before and after the plastic deformation of the metal
|Carbon Steel Pipe Fittings|
|Product||45/90/180degree elbow / tee / cap / reducer / bend|
|Standard||ASME B16.9 ASTM JIS DIN|
|Surface treatment||bevelling,shot blasting,marking,painting according to customer
Our company is producer and exporter of all kinds of carbon steel pipe fittings.Our city is the hometown of carbon steel pipe fittings.everyday
lots of containers of fittings are dispached all over the
world,such as Russia,Egypt,Malaysia,India,Turkey,Indonesia,Jordon
and some other overseas markets.Our company monthly dispach around
50containers fittings.We provide our customers with one-stop
service from order to delivery.
1. Since most pipe fittings are used for welding, in order to
improve welding quality, the ends are beveled with a certain Angle
and a certain edge. This requirement is also strict.The surface
mass and mechanical properties are basically the same as the
pipe.For the convenience of welding, the fittings are the same type
of steel as the connected pipe.
2, that is, all the pipe fittings have to go through the surface
treatment, the inner and outer surface of the oxidized iron sheet
through the peening treatment, and then painted with anti-corrosion
paint.This is for export needs, moreover, in the domestic is also
for the convenience of transportation to prevent corrosion and
oxidation, must do this aspect of the work.
3, is the requirement for packaging for small pipe fittings, such
as exports, we need to make wooden cases, about 1 cubic meter,
stipulated that the number of elbows in this kind of box can not
exceed 1 ton, the standard allows the set, that is, large set
small, but the total weight generally can not exceed 1 ton.For
large pieces of y you need a single package, like 24 "you need a
single package.Another is the packaging mark, mark is to indicate
the size, steel, batch number, manufacturer's trademark.
Seamless elbow forming method:
1. Forging and pressing method: stretch the end or part of the pipe
with the forging machine, so as to reduce the outside diameter.
Commonly used forging machines include rotary type, connecting rod
type and roller type.
2. Rolling method: generally without mandrel, suitable for inner
round edge of thick wall tube.The core is placed in the tube, and
the roller is used for edge processing.
3. Stamping method: expand the tube end to the required size and
shape with tapered core on the press.
4. Bending forming method: there are three methods commonly used,
one method is called stretching method, another method is called
stamping method, the third roller method, there are 3-4 rollers,
two fixed rollers, an adjustment roller, adjust the fixed roller
distance, the finished pipe is bent.
5. Bulking method: one is to place rubber inside the tube and
compress it with punches to make the tube protruding and
forming;Another method is hydraulic bulging, in which a liquid is
filled in the middle of the tube, and the liquid pressure pushes
the tube into the desired shape. This method is used in most of the
production of bellows.
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Guozhong International Limited