testing of the new Danieli PcTM-13 premium
coupling threading machine with advantageous
results. API and premium couplings with 98%
machine availability and 93% of good pieces with
dimensional tolerances within 25% of API standard
tolerances were produced right from the beginning.
A central drive configuration for the manufacture of
premium connections in one step, avoiding multiple
coupling positioning in the head stock was selected.
This solution eliminates any possible deviation
in concentricity at the extremities and enhances
machine productivity.
The clamping force is distributed evenly on the
coupling surface by 2 clamping planes and 12 jaws to
prevent distortion particularly in the seal area and
even where premium couplings with an extremely
thin wall thickness are concerned. The machine
can be easily integrated into an automatic coupling
shop where blank roughing and finishing can be
performed in series on 2 PcTM machines.
Heavy-duty design and high-precision
positioning of the cutting inserts reduce
the number of threading passes for API
and Premium couplings and offer increased
cutting speed and feeding.
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TUBE NEWS January 2018
7