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Custom Frames > Alloy Frames

	Columbus Zonal Frame and Carbon Forks The characteristics of the Zonal tubes • Elevated strength/weight ratio thanks to the use of lightened tubes in the central zone • Very good TIG weldability • It is necessary to perform an artificial ageing treatment after the welding of the frame in order to improve the mechanical performances (6 hours at a temperature of 90°C followed by 4 hours at 150°C).		Price:	QTY:

	Columbus Airplane Frame and Carbon Forks The characteristics of the Airplane tubes • Lightness • Excellent workability and weldability. • The heat treatment is strictly recommended, 4/5 days after welding: artificial ageing 6h at 90°C, then 4h at 150°C.		Price:	QTY:

	Columbus Metal Frame and Carbon Forks The characteristics of the Metal tubes • Profiles of 5 tubes designed for maximum stiffness. • Good resistance/weight ratio • Artificial ageing treatment should be performed 4/5 days after welding (6 hours at 90°C followed by 4 hours at 150°C) The new Metal shapes in addition to enhancing the aesthetic aspect of the frame also increase its stiffness. The 42-diameter circle down tube, which through a double passage profile, has an elliptic section at the head that stiffens the structure on the vertical level. At the bottom bracket there is an analogous section but rotated by 90°, which stiffens the frame on the horizontal level. The top tube is tapered in the part of the saddle tube where it joins perfectly, though maintaining a section that stiffens the frame further on a vertical level, at the head end.		Price:	QTY:

	Columbus Altec 2 Frame and Carbon Forks The characteristics of Altec2 Plus tubes • Lightness • Excellent weldability • The heat treatment is strictly recommended after welding (artificial aging treatment: 6h. at 90°C, then 4 h. at 150°C).		Price:	QTY: