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CTD Bars - Cold Twisted Bars are made by twisting the bars after hot rolling. Having various advantages,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.
R.Mohanakrishnan
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∙ 14y ago
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What is CTD Steel Bars?
CTD rods are called as Cold Twisted Deformed. The method of twisting the rods generaly increases the tensile strength of rods. Here twisting of steel rods is done after it gets cooled. Here atn this time the topmost and near topmost fibres are getting ruptured while it is twisted, which ends in the formation of micro cracks over the surface of the finished steel rods. If these cracks are carefully seen in microscope the width of cracks is more at the topmost fibre and gradually reduces when it goes deeper into the section. These cracks acquires water or water molecules which are harmful to steel or it may be the major cause for RUST. Hence the use of CTD rods are not advisable.
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What is CTD Steel Bars?
CTD rods are called as Cold Twisted Deformed. The method of twisting the rods generaly increases the tensile strength of rods. Here twisting of steel rods is done after it gets cooled. Here atn this time the topmost and near topmost fibres are getting ruptured while it is twisted, which ends in the formation of micro cracks over the surface of the finished steel rods. If these cracks are carefully seen in microscope the width of cracks is more at the topmost fibre and gradually reduces when it goes deeper into the section. These cracks acquires water or water molecules which are harmful to steel or it may be the major cause for RUST. Hence the use of CTD rods are not advisable.
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What is ctd bars?
CTD rods are called as Cold Twisted Deformed. The method of twisting the rods generaly increases the tensile strength of rods. Here twisting of steel rods is done after it gets cooled. Here atn this time the topmost and near topmost fibres are getting ruptured while it is twisted, which ends in the formation of micro cracks over the surface of the finished steel rods. If these cracks are carefully seen in microscope the width of cracks is more at the topmost fibre and gradually reduces when it goes deeper into the section. These cracks acquires water or water molecules which are harmful to steel or it may be the major cause for RUST. Hence the use of CTD rods are not advisable.
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