TRAFILATI :: ENGLISH :: PRODUCTS :: DOUBLE COILED
double coiled
(D) Outer diameter from 10 to 50 mm
(S) Thickness from 1.0 to 2 mm

The double coiled tube is characterised by an exterior rope-look with six twisting lines.
The diameter indicates the maximum external measurement of the tube, or rather the measurement between the two extremes between the top of the ropes which can be minimum 10 millimetres (for example a diameter by thickness of 10 x 1 mm) and a maximum of 50 millimetres (for example a diameter by thickness of 50 x 1,5 mm).
So, the production range of external diameters goes from 10 mm to 50 mm.
The thickness of the tube, which indicates the measurement in millimetres of the difference between the external and the internal surface, can be minimum 1,00 mm (for example diameter by thickness 12 x 1,00 mm), and maximum 1,50 mm (for example diameter by thickness 40 x 1,50 mm).
So, the production range of thickness goes from 1,00 mm to 1,50 mm.
According to the desired aesthetical effect the pace, the depth and the incision can be requested. The pace is the degree of twisting in the rope-design (the shorter the pace, the more twisted the coil), whereas the depth indicates the depth of the groove from one rope to the next: in the same way as the depth of the groove, the incision equally indicates the grade of roundness of the rope.
The pace is the degree of twisting in the rope-design (the shorter the pace, the more twisted the coil), whereas the depth indicates the depth of the groove from one rope to the next: in the same way as the depth of the groove, the incision equally indicates the grade of roundness of the rope. When the tube is in its raw and thick stage, the engraving is in the shape of a sharp “v” and the head of the petal shape is flat; when the tube has been drawn and it has been reheated, the “v” engraving becomes open and the petal shape is more rounded and pronounced.


Our tubes are proposed in commercial length, approximately in a range between 4.500 mm 5.500 mm. However, they can be cut in a fixed length, e.g. bars of 5.000 mm, or proposed already cut to pieces in the required sizes, i.e. rings of 30 mm.
The packaging can be arranged on request in bundles protected by bubble wrap or in wooden crates.
To know the minimum producible quantity and to agree on the conditions of return please contact our offices.


To know what commercial measures are immediately availables see the warehouse catalog at our subsidiary Comet SpA warehouse

Brass CuZn37
Hard
Soft
Stress relieved


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