Iron & Steel
Description
The low relaxation process is applied to PC wires to decrease the loss of relaxation, which
represents the stress decrease as a function of time, under an imposed strain of constant
magnitude. Structural calculation takes into consideration this loss; therefore, if relaxation loss is decreased, the
steel section for a given stress is also lesser.
The low relaxation characteristics are conferred to the product through a thermo-mechanical
process that heats the steel wires at a temperature of approximately 400 o C and
simultaneously submits them to a tensile stress such that it creates on the material a plastic
strain of the order of 1%.
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unbonded pc strand...
Tianjin P.C Strand Industry Group
pc strand,pc wire
Address: Daqiuzhuang industry area jinghai tianjin,
Tianjin, Tianjin
China, 301605
Tel: 0086-22-295581
Fax: 0086-22-2639851
