CTD Bars – Cold Twisted Bars are made by twisting the bars after hot rolling. Having various advantages, CTD Bars differ from the TMT Bars in:

Ductility
CTD Bars derive their strength from hardening where strength gain results in decrease of ductility. Decreased ductility has an adverse effect on the ease of fabrication, earthquake resistance etc.

Resistance from Rust, Corrosion and Fire
Since CTD Bars are made after hot rolling, they have less resistance from rust as well as fire.

Affordable
CTD Bars are quite affordable for using in construction. But are less economical than TMT Bars.

Bendability
CTD Bars are flexible after the hot rolling process they are manufactured from. However, TMT Bars precede over them in case of bending and re-bending ability.