High Strength threaded Bar
Classification：
key word：
As a kind of pre-stressing structural steel bar with the advantages of high strength, low relaxation rate, good welding performance, convenient and reliable connection, easy tensioning construction, etc., the high-strength rebar is widely used in the construction of large-scale water conservancy projects, continuous beams and large-scale frame structures in industrial and civil buildings, large-span bridges of highways and railroads, nuclear power plants and suspension bridges with the main cables in ground anchors, etc., as well as in the construction and anchoring of the rock body.
Diameter: Φ28~Φ100mm
Strength grade: PSB930~PSB1080
Reference standard:
GB/T20065-2016 Threaded steel bars for prestressed concrete
High-strength prestressing rebar is divided into levels by yield strength, and its code is "PSB" plus the minimum value of yield strength, P, S, B are the first letters of Prestressing, Scres-thread, Bars, etc. For example, PSB830 indicates that the standard value of yield strength is 830MPa. For example: PSB830 indicates that the standard value of yield strength is 830MPa rebar.
Mechanical Properties of High Strength Prestressed Rebar
| level | Yield strength Yield Strength Rp0.2 Mpa | Tensile strength Tensile strength Rm Mpa | Severed elongation Rate A % | Maximum force Total elongation Agt % | Stress relaxation properties | |
| Not less than | Initial stress | Stress after 1000h Relaxation rate Vr/% | ||||
PSB785 | 785 | 980 | 8 | 3.5 | 0.8Rp0.2 | ≤4.0 |
PSB830 | 830 | 1030 | 7 | |||
PSB930 | 930 | 1080 | 7 | |||
PSB1080 | 1080 | 1230 | 6 | |||
High Strength Prestressed Rebar Size
| Base circle diameter D mm | Thread height h mm | Thread bottom width b mm | Pitch l mm |
65 | 3 | 12 | 22 |
70 | 3 | 12 | 22 |
75 | 3 | 12 | 22 |
80 | 3.5 | 12 | 24 |
85 | 3.5 | 12 | 24 |
90 | 3.5 | 12 | 24 |
95 | 3.5 | 12 | 24 |
100 | 3.5 | 12 | 24 |
110 | 3.5 | 12 | 24 |
120 | 3.5 | 12 | 24 |
130 | 3.5 | 12 | 24 |
Note: Special customization is available upon request.
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