(57) standard line plant for the surface treatment of preheating, brushing, painting,
drying and marking of metallic tubes, comprising a loading conveyor by means of transversal
translation (CT1), after a weighing station (S), which conveyor (CT1) transfers a
set of tubes in a predetermined number transversally with loading step by step, one
after the other, a determinate number of tubes on an orthogonal line conveyor (R1)
formed by a plurality of transversal motorized rollers independently movable on a
frame from the bottom upward and from under the translation line (CT1) on the same
line to take said set of tubes and set them along the treatment line where are installed:
a data checking and detecting station (CRD) to automatically control the plant according
to the tube number and size, a station of preheating, with upper and lower burners,
and cooling (R2-H); a surface treatment station with brushing in contraposition and
blowing equipment (R3-SG); a following double cabin painting station (P), a following
drying station (R4-E); a marking station (M) and an unloading station (R5-CT2) set
up and functionally structured as the loading one, being the painting transport with
cross slides instead of rollers (Figure 1).
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