亚虎国际娱乐_亚虎国际平台_亚洲顶级在线娱乐平台

  Prestressed concrete steel strand, also known as 1×7 low-relaxation prestressed concrete strand, is twisted steel cable composed of 7 high-strength steel wires, which has been through the stress relief treatment (stabilized). Steel embedded in prestressed concrete structure has been pre-stretched before load been applied on, applying a prestressing force on the concrete to offset or reduce the tensile stress generated by load, thereby enhancing the crack resistance and stiffness of the components, reducing the width of cracks, as well as using high-strength steel and concrete effectively to save steel material and reduce the weight.

  Features
  High-strength, low-relaxation, supply in coil, large-length, low-consumption, strong bond with concrete, convenient construction.
  Tensile strength grades are of 1860MPa (common) and 1720, 1960, 2000 Mpa.

  Technical Parameters
Technical Parameters of Standard 1×7 Low-relaxation Prestressed Concrete Strand
Nominal
Diameter
mm
Tolerance
mm
Reference
Section
mm²
Reference
Mass
g/m
Tensile
Strength
Rm
MPa

Maximum
Force
Fm
KN
Required
Non-porpor-
tional Exten-
sion Force
Fp0.2
kN
Toel Elon-
gation Rate
Of Maxi-
mum Force
(L0 ≥500mm)
Agt(%)
Stress Relaxation Properties
The Ratio
of Initial
load to
Nominal Maxi-mum Force
%
1000h
Stress Rela-
xation
Rate
%
9.50 +0.30
-0.15
54.8 430 1720 94.3 84.9 3.5 60
70
80
1.0
2.5
4.5
1860 102 91.8
1960 107 96.3
11.10 74.2 582 1720 128 115
1860 138 124
1960 145 131
12.70 +0.40
-0.20
98.7 775 1720 170 153
1860 184 166
1960 193 174
15.20 140 1101 1720 241 217
1860 260 234
1960 274 247
17.80 191 1500 1720 327 274
1860 353 31

























  Technology Standard

  Chinese Standard    GB/T 5224
  美标   ASTM A416
  英标  BS 5896
  日标  JIS G3536
  澳新标  AS/NZS 4672
  巴西标准   NBR-7483

  
 
Home Products 亚虎国际娱乐_亚虎国际平台_亚洲顶级在线娱乐平台