Year1
- Φ20：
- 2.47
- Φ25：
- 4.1
- Φ32：
- 6.65
Threaded steel bars for prestressed concrete (also called precision-rolled threaded steel bars) are large-diameter, high-strength, and high-dimensional precision straight steel bars with discontinuous external threads rolled on the entire steel bar
. The steel bars can be connected with internally threaded connectors or threaded nuts at any cross-section for anchoring.
/ Mechanical properties
The mechanical properties of the ribs should comply with the requirements in the table.
Special provisions for non-proportional elongation strength (.),
Tensile strength
Elongation after elongation/%
Total elongation under high force
/> %
Force relaxation performance
Stress relaxation rate after initial stress/%
& &. .
Fang Zai guarantees steel bars On the basis of qualified relaxation performance, a relaxation test can be conducted. The initial stress is
% of the nominal yield strength, and the relaxation rate is not greater than .%.
Other strength levels and specifications of steel bars are provided according to user requirements.
The steel bar bending test can be carried out through negotiation between the supplier and the buyer.
Fatigue testing can be carried out after negotiation between the supplier and the buyer.
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