PC WIRE

Founded in September 1996,Liaoning Tongda Building Material Industrial Co.Ltd.（Tongda）, which is specialized in the main products of High–strength and Low - relaxation PC(Prestressed Concrete) steel wire and strand…
and also deal the spring wire production, steel products, cements and hardware business
The company has the import and export license
The Brand – Tonglida -- PC Steel Strand and Wire have been used in the construction field in the world
the products quality is not only meet China National standard and also meet ASTM, BS…… standard

PRODUCTS TYPE AND SIZE

Type	Main size (mm)	Executed standard	Shape
Cold-drawn PCCP plain round wire	3.00 4.00 5.00 6.00 7.00 8.00 9.00	GB/T5223-2002 ASTM A648
Three sides indented Pc wire	4.00 5.00 6.00 7.00 8.00	EN10138 GB/T5223-2002 UNE36094-97
PC helical rib wire	4.80 5.00 6.00 7.00 8.00 9.00	GB/T5223-2002
PC strand	9.50 9.53 12.70 15.20 15.24 15.70 17.80	GB/T5224-2003 ASTM A416/A416M-2002 BS5896-1980
Pc compact strand	12.70 15.20 18.00	GB/T5224-2003 BS5896-1980
Unbonded strand	12.00 12.70 15.00 15.20 15.70	JG3006-1993

Prestressed Concrete Cylinder Pipe Wire

Nominal Diameter Tolerance Tensile Strength Yield Strength Torsion Area Reduction
Relaxation

(mm) (mm) (Mpa) (Mpa) L₀=210mm
Times/360^o
Ψ％

4.0 ±0.04 　≥1570 ≥1180 ≥8 ≥35 Initial stress of 70% tensile strength Max. 8% (1000hours）

5.0 ±0.05 　≥1570 ≥1180 ≥8 ≥35

6.0 ±0.05 　≥1570 ≥1180 ≥7 ≥30

7.0 ±0.05 　≥1570 ≥1180 ≥6 ≥30

PC Wire GB/T5223-2002

Nominal diameter (mm)	Allowed Tolerance (mm)	Tensile strength σb0.2 not less than (Mpa)	Un—proportional extensions stress σp0.2 not less than (Mpa)	Total elongation under max.forec L₀=200mm not less than(%)	Bending text		Relaxation
					Bending test Times/180°not less than	Radius (mm)	Initiate stress of % tensile strength	Loses stress 1000 hours not more than %
					Bending test Times/180°not less than	Radius (mm)	Initiate stress of % tensile strength	Ⅱ
4.00	±0.05	1470 1570 1670 1770 1860	1290 1380 1470 1560 1640	3.5	3	10	70	2.0
4.80		1470 1570 1670 1770 1860	1290 1380 1470 1560 1640		4	15	70	2.0
5.00		1470 1570 1670 1770	1290 1380 1470 1560		4	15	70	2.0
6.00					4	15	70	2.0
6.25					4	20	70	2.0
7.00	±0.10				4	20	70	2.0
8.00		1470 1570	1290 1380		4	20	70	2.0
9.00		1470 1570	1290 1380		4	25	70	2.0
10.00		1470	1290		4	25	70	2.0
12.00		1470	1290		4	30	70	2.0

Metric to British Measurement (Imperial)

         1/8 inch = 3.175 mm

         1 inch = 25.4 mm

1 mm = 0.0394 inches

          1 foot = 304.8 mm

1 meter = 3.2808 feet

          1000 ft² = 92.903 m²

100 m² = 1076.39 ft²

          1000 ft³ = 28.317 m³

10m³ = 353.14 ft³

          1000 gal = 3.7854 m³

10m³ = 2.641.73

          1 pound = 0.4536 kg

1 kg = 2.2046 pounds

          1 psf = 4.88243 kg/m²

10 kg/m² = 2.048 psf

          1 pcf = 16.019 kg/m³

10 kg/m³ = 0.624 pcf

          short ton = 907.18 kg
          (2000 lbs.)

0.90718 = 2000 pounds
tonne

          long ton = 1016 kg
          (2240 lbs.)

1 tonne = 2204.6 pounds

         1000 psi = 6.8948 MPa

1 MPa = 145.0368 psi

                     Newton (N) = kg m/s² = kilograms x 9.80665
Pascal (Pa) = N/m2