It is a mature process with technical characteristic in china at present, the unit adopts three-roll externally controlled forming, and two processes of front swing and rear swing are used for production. The unit has many advantages, such as stable forming, high degree of automation and convenient maintenance.
Its main objective is to chamfer the mechanical end face of steel pipe, so as to facilitate the use of welded pipe in subsequent process and the butt-joint during pipeline laying.
The quality inspection and stress relief of finished products of corresponding large diameter steel pipes are mainly carried out. This machine is a single steel tube pressure test, four corners. The tension beam structure adopts end sealing at the pipe mouth, filling water with low-pressure pump and pressurizing with high-pressure plunger pump.
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