Prestressed Steel Strand

17
Oct-31/2024

Prestressed Steel Strand● Steel Wire for Prestressed Concrete:The product is mainly used to produce prestressed concrete components of various structural shapes using various tensioning techniques. In the construction of large-scale railways, highway bridges, roof trusses, crane beams, indust



Prestressed Steel Strand

● Steel Wire for Prestressed Concrete:
The product is mainly used to produce prestressed concrete components of various structural shapes using various tensioning techniques. In the construction of large-scale railways, highway bridges, roof trusses, crane beams, industrial and civil prefabricated panels, wall panels, prestressed concrete TV towers, nuclear power plants, and other engineering projects. Produce two surface forms: smooth and spiral ribs. American standards ASTMA416, ASTMA421, British standard BS5896, Japanese standard JISG3536, international standard ISO6934, European standard EN10138 

● Steel Strand for Prestressed Concrete :
This product is mainly used for reinforcing prestressed concrete structures. Such as large-span railway and highway bridges, crane beams, geotechnical anchoring engineering, multi-layer industrial factories, coal mines, sports venues, etc. Main executive standard: ASTM A416

● Unbonded Steel Strand for Prestressed Concrete: 
Post tensioned unbonded prestressed steel strands are used for cast-in-place floor slabs, prefabricated beams with large loads, and other specially designed structures in large-span and large-span buildings. It has the characteristics of no need for reserved holes, no need for grouting, simple construction, material saving, and easy bending.

 

Technical parameters of steel strand - American Society for Testing and Materials standard (ASTM A416)

 

 

Grade

 

Nominal

Dia.

(mm)

 

 

Tolerance

(mm)

 

Nominal

section

area

(mm2)

 

Mass Per

1000m

(Kg/1000m)

 

Minimum

Breaking

load

 

Min Load at 1%

Extension

(KN)

 

 

Lo≥610mm

(%)

The relaxation at 1000 h (Initial

load to 70% of nominal max load)

(r/%)

Low-Relaxation

Normal-Relaxation

 

250

[1725]

9.5

 

 

±0.40

51.6

405

89.0

80.1

3.5

2.5

3.5

11.1

69.7

548

120.1

108.1

12.70

92.9

730

160.1

144.1

15.20

139.4

1094

240.2

216.2

 

270

[1860]

9.53

 

+0.65

-0.15

54.84

432

102.3

92.1

11.11

74.19

582

137.9

124.1

12.70

98.71

775

183.7

165.1

15.24

140.00

1102

260.7

234.6


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