High Strength Low Relaxation 7 Wire 12.7mm PC Strand
1. Specifications: 1*7 wire.
2. Diameter: 12.7mm , 1720/1860/1960MPA ,
15.2mm , 1570/1670/1770/1860/1960MPA
15.7 mm, 1860MPA.
3. Standard for your options: ASTMA416, AS1311,BS5896, JISG3536, GB/T5224-2003.
4. Steel Material: 82B.
5 Coil Weight: 2000-4000kg/coil.
6 Features: Low Relaxation, High tensile strength.
7. Twisted Direction: Usually Left Direction or Right Direction is available.
8. Applications: Large -span bridges on railway and highway, overhead crane beam, rock-soil anchoring project, multi-story industrial buildings, stadiums, coal mines and etc.
9. Technical Data For 1*7 Bonded(Uncoated) PC Strand:
| ASTM A416 |
| Grade |
Nominal Dia. |
Tolerance (mm) |
Cross Section Area (Sn/mm2) |
Re. Mass per 1m (g/m) |
Minimum Breaking Load (Fm/KN) |
Min. Load at 1% Extension (Fp0.2/KN) |
(L0≥500mm) Agt Elongation Max Load not less than (%) |
The Relaxation at 1000 Hours (r/%) |
| (In) |
(mm) |
| 270 |
3/8 |
9.53 |
0.65
-0.15 |
54.84 |
432 |
102.3 |
92.1 |
3.5 |
2.5 |
| 4/9 |
11.11 |
74.19 |
582 |
137.9 |
124.1 |
| 1/2 |
12.7 |
98.71 |
775 |
183.7 |
165.3 |
| 3/5 |
15.24 |
140 |
1102 |
260.7 |
234.6 |
2. 1*7 Unbonded(PE Coated) PC Strand:
Unbonded(PE Coated) PC Strand:
1. Standard: ASTM A416/BS5896/JIS G3536,KS D7002,AS/NZS 4672 etc.
2.Diameter: 9.3mm/9.53mm/12.5mm/12.7mm/15.2mm/15.24mm/17.8mm/20.3mm/21.8mm/28.6mm.
3. Material: 82B.
4. Tensile Strength: 1770MPa,1810MPa,1860MPa.
5. Relaxation Value(1000h): max 2.5%.
6. Coil Weight: from 2 tons to 4tons.
7. Technical Data For Unbonded(PE Coated) PC Strand:
| Specification |
Tensile Strength(Mpa) |
Section Area(mm2) |
Grease mass /meter(g/m) |
Min Thickness of Coat(mm) |
Friction factor(µ) |
Effect modulus(k) |
Mass/Meter(kg/m) |
Zinc Weight(g/m2) |
| 1*7-12.70 |
1720 |
98.7 |
43 |
1 |
0.04-0.1 |
0.003-0.004 |
0.88 |
260 |
| 1860 |
| 1*7-15.20 |
1570 |
140 |
50 |
1.21 |
| 1670 |
| 1770 |
| 1860 |
| 1*7-15.24 |
1860 |
140 |
50 |
| 1*7-15.70 |
1860 |
150 |
53 |
1.3 |
3. PC Steel Wire
1. PC Steel Wire Specifications:
1). Type: we manufacture plain pc steel wire and spiral pc strand wire(spiral ribbed).
2). Standard: AISI,ASTM,BS,DIN,GB,JIS.
3). Remarks: common use standard: GB/T 5223-2002, BS 5896-1980, ASTM A421, ASTM A648.
4). Wire diameter: from 4mm to 10mm(4.0mm, 5.0mm, 6.0mm, 7.0mm, 8.0mm, 9.0mm, 10.0mm).
5). Materials: Alloy Or Not: Non-alloy.
6). Special Use: Cold Heading Steel.
7). Surface: spiral, plain, indented.
8). Tensile strength: 1470,1570,1670,1770Mpa,1860Mpa.
9). Raw material: SWRH77b,SWRH 82b.
10). Package Coil Weight: 1.0-2.5 tons per coil, according to your requirement.
11). Length: 1000m-3600m per coil
12). Relaxation on 1000 hours: 2.5% max.
13). Elongation at breakage: 3.5% min.
14). steel strand feature: low relaxation, stress-relieved, high tensile force.
Technical Data For Spiral PC Steel Wire
| Size/mm |
Tolerance/mm |
Area/mm2 |
Theoretical weight-g/m |
Wire Cross-sectional Size |
Rib Pieces |
Lay Length (Lg)/mm |
| Basic-round Dia (D1)/mm |
Outline Dia(D)/mm |
Rib Width(jk)/mm |
4 |
| 4 |
±0.04 |
12.57 |
98.6 |
3.85±0.05 |
4.25±0.05 |
0.90~1.30 |
24-30 |
| 4.8 |
±0.05 |
18.1 |
142 |
4.60±0.05 |
5.10±0.05 |
1.30~1.70 |
28-36 |
| 5 |
19.63 |
154 |
4.08±0.05 |
5.30±0.05 |
1.30~1.70 |
28-36 |
| 6 |
28.27 |
222 |
5.80±0.05 |
6.30±0.05 |
1.60~2.00 |
30-38 |
| 6.25 |
30.68 |
241 |
6.00±0.05 |
6.70±0.05 |
1.60~2.00 |
30-40 |
| 7 |
38.48 |
302 |
6.73±0.05 |
7.46±0.10 |
1.80~2.20 |
35-45 |
| 8 |
±0.06 |
50.26 |
394 |
7.75±0.05 |
8.45±0.10 |
2.00~2.40 |
40-50 |
| 9 |
63.62 |
499 |
8.75±0.05 |
9.45±0.05 |
2.10~2.70 |
42-52 |
| 10 |
78.54 |
616 |
9.75±0.05 |
9.75±0.05 |
2.50~3.00 |
45-58 |
15. Our Advantages:
We are PT Manufacturer from China, our full products range for post tensioning and pre-strssing construction:
1). Materials: pc strand, YJM anchor system(monostrand anchor, multistrands anchor), ducts(metal ducts, HDPE plastic ducts)
2). Equipment: Hydraulic Jack(QYC mono jack, YDC multi-strand tensioning jack), electric oil pump, YH30 embossing machie(onion jack), GYJ500 extrusion machine, ZG130 ducts making machine, grouting pump and mixer for post tensioning).
3). Bridge Equipment: Bridge Crane, Bridge Girder Launching Machine, Bridge Girder Transporting Vehicle, etc.
16. FAQ:
1) Q: Do you provide free samples?
A: Yes, sure, we provide free samles for your testing.
2) Q: How is the delivery lead time:
A: Goods in stock: within 3 days, Goods out of stock(7 days), Goods need to be customized(10-15 days).
3) What is your Minimum Order?
A: MOQ: 5 MT.
4). What information should provide before place order?
We are appreciated you provide us the followings information, so we can arrange everything quickly.
1). What diameter of pc strand do you order?
2). Do you need Unbonded(PE Coated) or Bonded(Uncoated) PC Strand?
3). What is your required quantity and destination port?
5) Q: Payment Terms?
A: TT, LC, Western Union, Paypal, etc.
6) Q: How to transport the goods:
A: by shipping, airflight, express.
Let's have a quick communications for business by following:
Mobile Phone No.: +8613673713569
Jason Wang
Audited Supplier 
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