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CARBON STEEL SEAMLESS PX DO 273.1*THK 9.27*L6000MM API 5L GR.B WELDEO 801687
Introduction
After extrusion, take off the pipe and set the diameter. The
diameter fixing machine rotates into the steel embryo through the
conical bit at high speed to form the steel pipe. The inner
diameter of the steel pipe is determined by the outer diameter
length of the drill bit. After the steel pipe is fixed, it enters
the cooling tower and is cooled by water spray. After cooling, the
steel pipe will be straightened. The steel pipe is straightened and
sent from conveyor belt to metal flaw detector (or hydraulic test)
for internal flaw detection. If there are cracks, bubbles and other
problems inside the steel pipe, it will be detected.
Steel pipe or all kinds of conventional weapons indispensable
materials, barrel, barrel and so on are made of steel pipe. The
steel pipe can be divided into round pipe and special-shaped pipe
according to the shape of cross-sectional area. Because the
circular area is the largest under the condition of equal
circumference, more fluid can be transported by circular pipe. In
addition, the ring section under internal or external radial
pressure, the force is more uniform, therefore, most of the steel
pipe is a circular pipe.
Making ring parts with steel pipe can improve the utilization ratio
of materials, simplify the manufacturing process, save materials
and processing hours, such as rolling bearing ring, Jack sleeve,
etc. At present, steel pipe has been widely used to manufacture.
It is divided into 10# seamless steel pipe ,20# seamless steel pipe
,4# seamless steel pipe and so on.
Material factors
(1) Seamless steel pipes with good comprehensive performance should
be used for structures directly bearing dynamic loads and those in
strong seismic zones under load conditions, while seamless steel
pipes with lower prices can be used for structures generally
bearing static loads.
(2) The welding process of the connection method results in welding
deformation, welding stress and other welding defects, and there is
a risk of cracks or brittle fracture of the structure. Therefore,
the welding structure should be strict with the material
requirements.
(3) In the temperature and environment of the structure, seamless
steel pipe is easy to be cold and brittle at low temperature, so
the structure working at low temperature, especially the welding
structure, should choose the sedative steel with good resistance to
low temperature brittle fracture. In addition, Taiyuan seamless
steel pipe with open-air structure is easy to produce aging, and
seamless steel pipe with harmful medium is easy to corrode, fatigue
and fracture, so different materials should be selected
differently.
Carbon steel seamless steel pipe has the following standards: |
GB8163 Seamless steel pipe for fluid transportation |
GB6479 High pressure seamless steel pipe for chemical fertilizer equipment |
GB9948 Seamless steel pipe for petroleum cracking |
GB3087 Seamless Steel Pipe for Low Medium Pressure Boiler |
GB5310 Seamless Steel Pipe for High Pressure Boiler |