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high carbon spring steel wire
This products is mainly used for prestressed and post-tensioning technology in various shapes of prestressed concrete structures. And widely use for civil engineering construction such as large scale railroad, high-way bridges, buildings trussed, overhead crane beams, industrial and prefabricated concrete floor, wall board, tubular pipes, PC water pipes, TV towers and nuclear power station etc.
Active standard:GB/T5223, ASTM A421, BS5896, JIS G3536, ISO6934, EN10138 or other special required standards.
GB/T5223-2002 Technical standards for PC Wire.
|
Nominal Dia. (d /mm)
|
Tolerance (mm) |
Tensile strength à /MPa Not less than
|
Yield Strength (Ã /MPa) Not less than
|
Elongation at max load (Lo=200mm) ´ /% Not less than |
Bending Times Not less than |
Bending Radius R/mm |
Relaxation Propertied |
|
||||
The relaxation at 1000 h (Initial load to 70% of nominal tensile strength) (r/%) Not less than |
|
|||||||||||
4.8 |
±0.05 |
1470 1570 1670 1770 1860 |
1290 1380 1470 1560 1640 |
|
4 |
15 |
2.0 |
|||||
5.0 | ||||||||||||
6.0 |
±0.05 |
1470 1570 1670 1770 |
1290 1380 1470 1560 |
3.5 |
4 |
15 |
||||||
6.25 | ||||||||||||
7.0 |
20 |
|||||||||||
8.0 |
±0.06 |
1470 1570 |
1290 1380 |
4 |
20 |
|||||||
9.0 |
25 |
|||||||||||
|
Nominal Dia. (d /mm)
|
No. of Helix rib |
Lining Dia. and Tolerance (mm) |
Outline Dia. and Tolerance (mm) |
Width of Single rib (±/mm) |
Layer length (c/mm) |
Nominal cross section S /mm²
|
Re. mass per meter (g/m) |
||
4.00 |
4 |
3.85±0.05 |
4.25±0.05 |
0.90~1.30 |
24~30 |
12.57 |
98.6 |
||
4.80 |
4.60±0.05 |
5.10±0.05 |
1.30~1.70 |
28~36 |
18.09 |
142 |
|||
5.00 |
4.80±0.05 |
5.30±0.05 |
|||||||
6.00 |
5.80±0.05 |
6.30±0.05 |
1.60~2.00 |
30~38 |
28.27 |
222 |
|||
6.25 |
6.0±0.05 |
6.70±0.05 |
30~40 |
30.68 |
241 |
||||
7.00 |
6.73±0.05 |
7.46±0.10 |
1.80~2.20 |
35~45 |
38.48 |
302 |
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