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Steel Wire for Pre-stressed Concrete
 

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Processing:Continuous drawing, hot-dip galvanized surface, stabilizing treatment
Features:High tensile strength, stable modulus of elasticity, non-joint gauge, little residual stress, good corrosion resistance for post-galvanizing surface.
Standard: GB/T17101-1997, Hot-dip Galvanized Steel Wires for Bridge Cables
Application: Main cables of long-span suspension bridges and cables of cable-stayed bridges.
Implementing Standards and Main Technical Indicators
Implementing Standard

Nominal Diameter

mm
Tensile Strength
Yield Strength
MPaNot less than

Elongation %
Not less than

Bending
Relaxation

Numbers of Bending Tests
Not less than

Bend Radius

mm

Percen
- tage of Initial Stress to Nominal Strength

1000h stress relaxation
%Not more than

Relaxation Grade 1

Relaxation Grade 2

National Standards
Stress-relieved steel wire
4.00
1470
1570
1670
1770
1860
1250
1330
1410
1500
1580
3.5
3
10
60
4.5
1.0
5.00
4
15
6.00
1570
1670
1330
1420
70
8
2.5
7.00
1470
1250
20
80
12
4.5
8.00
9.00
1570
1330
25

U.S. Standards

4.98
6.35
7.01
1655
1655
1620
1407
1407
1377
4.0
70
80
2.5
3.5

 

U.K. Standards

4.0
1670
1770
1390
1470
3.5
4
10
4.5
4.5
1620
1350
15
5.0
1670
1770
1390
1470
15
8
6.0
1670
1770
1390
1470
15
7.0
1570
1670
1300
1390
20
12

Japanese Standards

2.9
3.5
4
4.5
5
6
7
8
9
1923
1684
1680
1603
1625
1560
1515
1472
1418
1710
1476
1480
1421
1421
1369
1325
1227
1226
3.5

4.0

4.5
80
3.0

Note: (1) In the U.K. standard, the yield strength is the yield value when the permanent deformation is 0.1%.
(2) The gauge length for measuring the elongation is set to be 100 mm in China’s national standard and in Japan’s standard, and to be 200 mm in the U.K. standard and 250 mm in the U.S. standard.
(3) In Japan’s standard, the relaxation test takes 80% of the yield load for 0.2% permanent deformation as the initial load to measure the 10h relaxation value.

 

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Product
COPYRIGHT @ Jiangyin Walsin Steel Cable Co., Ltd
Address:No.679, Binjiang west road, Jiangyin City, Jiangsu Province,P.R.C  
pc: 214443  Tel: 0086-510-86402144
Fax: 0086-510-86402664  E-mail:info@jywalsin.com
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