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Contact Us
TEL：0086-532-55579972
FAX：0086-532-55579636
E-mail：threadbolt@aliyun.com
MSN：threadbolt@live.cn
ADD：2-1010, Tianbao Int’l Mansion, No. 61 Haier Road, Qingdao, China 266061
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SCREW THREAD STEEL BAR
Fully Threaded Bar - can be cut and coupled at any point.
Low Relaxation Steel - minimum relaxation during service life.
Prestressing Grade Steel - high strength offers weight savings and reduced working diameters.
|
Steel grade |
Yield strength MPa |
Tensile strength MPa |
Elongation at failure A% |
Uniform elongtion Agt% |
Stress relaxation | ||
|
Original stress |
Relaxation rate after 1000h r/% |
Ralaxation rate after 10 r/% | |||||
|
PSB500 |
≥500 |
≥630 |
≥10 |
|
0.8R |
≤3 |
≤1.5 |
|
PSB785 |
≥785 |
≥980 |
≥7 |
≥3.5 |
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PSB830 |
≥830 |
≥1030 |
≥6 | ||||
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PSB930 |
≥930 |
≥1080 |
≥6 | ||||
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PSB1080 |
≥1080 |
≥1230 |
≥6 |
≥2.5 | |||
|
PSB390 |
≥390 |
≥560 |
≥18 |
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