Low Relaxation 12.7mm High Carbon Prestressed Concrete Steel Strand

Short Description:

Product: low relaxation 12.7mm high carbon prestressed concrete steel strand Standard: ASTM A416 Place of Origin: Tianjin, China (Mainland) Material: 82B/77B wire rod Tensile strength: 1860Mpa Diameter: 12.7mm Packaging Details step 1: Coils are wrapped by 8 steel strips;  step 2: Wrapped by waterproof cloth;  step 3: Wrapped by 8 steel strips (6+2) ;  step 4: Added with wooden blocks.   PRODUCTION PROCESS Inspection on wire rod→Surface treatment of wire rod→Wire drawing→Inspection on s...


Product Detail

Product Tags

2

Product:

low relaxation 12.7mm high carbon prestressed concrete steel strand

Standard:

ASTM A416

Place of Origin:

Tianjin, China (Mainland)

Material:

82B/77B wire rod

Tensile strength:

1860Mpa

Diameter:

12.7mm

Packaging Details

step 1: Coils are wrapped by 8 steel strips; 
step 2: Wrapped by waterproof cloth; 
step 3: Wrapped by 8 steel strips (6+2) ; 
step 4: Added with wooden blocks.

 

PRODUCTION PROCESS

Inspection on wire rod→Surface treatment of wire rod→Wire drawing→Inspection on semi-product→Twisting & stabilizing treatment→Winding→Inspection on finished products→Packing→Stored in warehouse

 

Shipping: the coil weight is around 2.5-3.5 tons if no special requirement, one full 20ft container is able to load 27 tons, therefore there are 8-10 coils in each container.

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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