seamless hot rolled steel pipe
Seamless steel pipe's technique of production.
The steel pipe seamless is mainly reduces the diameter through the tensity to complete,
the tensity reduces the diameter process is the hollow parent metal does not have
the core rod continuous rolling process.
In guaranteed that the mother manages the welding quality under the premise,
the welded pipe tensity reduces the diameter craft is heats up
the welded pipe whole to 950 degrees Celsius above,
passes through the tensity to reduce the diameter machine again
(tensity to reduce diameter machine to altogether have 24 while goings along)
rolling Cheng Ge to plant the outer diameter and
wall thickness production tube, uses the hot rolling steel pipe
which this craft produces has the essential difference
with the ordinary high frequency welded pipe
after the heating furnace heating its welded joint with parent substance's
Microstructure and the mechanical property may achieve completely identically in addition,
reduces the diameter machine rolling and the automatic control through the multi-while going along's tensity
causes steel pipe's size precision (particularly body roundness and wall thickness precision)
surpasses the similar seamless tube. The world developed country production's fluid tube,
in the boiler pipe has used the welded pipe seamless craft massively, along with society's development,
the domestic hot rolling welded pipe replaced seamless tube's aspect already to form gradually.
(2) The seamless steel pipe applies in the petroleum, the chemical industry, the coal gas, the day fuel gas,
the air conditioning, the low pressure fluid conduit, the steel structure and so on high density steel pipe