Certificates - Thai Wire Products

ลวดเหล็กกล้าตีเกลียวสำหรับคอนกรีตอัดแรง

Prestressed Concrete Wire
High Quality Steel Wire

ลวดเหล็กตีเกลียว

เส้นผ่านศูนย์กลาง 7.9 , 9.3, 9.5 , 11.1 , 11.3 ,
12.4 , 12.5 , 12.7, 15.2 , 15.7 mm. 5/16, 3/8, 7/16, 1/2, 0.6 inch
ประเภท 3 Wires / 7 Wires Stress Relieved
ชั้นคุณภาพ 1720 - 1910 MPa
ผิวสัมผัส Plain
การผ่อนคลาย Normal / Low Relaxation
เคลือบผิวพิเศษ Zinc Coating (Option)

TIS 420-2540

STANDARD Grade Nominal
diameter		 Nominal cross-
sectional area		 Mass per length Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Nominal Permissible variation Fm min Fm max Fp 0.1 min Fp 0.2 min Low Relaxation Normal Relaxation
(mm.) (mm²) (g/m) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
TIS 420-2540 /
ISO 6934-4:1991		 1720 9.3 51.6 405.0 396.9 - 421.2 88.8 - 72.8 75.4 3.5 25 1.0*1 2.5*1 4.5*1 4.5*1 8.0*1 12.0*1
12.4 92.9 729.0 714.4 - 758.2 160.0 131.0 136.0
15.2 139.0 1101.0 1079.0 - 1145.0 239.0 196.0 203.0
1860 9.5 54.8 432.0 423.4 - 449.3 102.0 83.6 86.6
12.7 98.7 774.0 758.5 - 805.0 184.0 151.0 156.0
15.2 139.0 1101.0 1079.0 - 1145.0 259.0 212.0 220.0

AS 4672:2025

STANDARD Grade Nominal
diameter		 Nominal cross-
sectional area		 Mass per length Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Nominal Permissible variation Fm min Fm max Fp 0.1 min Fp 0.2 min Low Relaxation Normal Relaxation
(mm.) (mm.2 ) (g/m) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) (60%) (70%) (80%) (60%) (70%) (80%)
AS 4672:2025
7 wire ordinary
common size		 1750 15.2 143 1122.0 1099.6 - 1166.9 250 − 205 − 3.5 25 − − 3.5*1 − − 12.0*1
1770 9.3 52 406.0 397.9 - 422.2 92 81
1830 15.2 143 1122.0 1099.6 - 1166.9 261 214
1850 9.5 55 432.0 423.4 - 449.3 102 83.6
1860 9.3 52 406 397.9 - 422.2 96.7 85.1
15.2 140 1101 1079.0 - 1145.0 261 214
15.7 150 1172 1148.6 - 1218.9 279 246
1870 7.9 36.9 290 284.2 - 301.6 69 56
11.1 73.9 580 568.4 - 603.2 138 113
12.7 98.6 774.0 758.5 - 805.0 184 151.0

BS 5896:2012

STANDARD Grade Nominal
diameter		 Nominal cross-
sectional area		 Mass per length Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Nominal Permissible variation Fm min Fm max Fp 0.1 min Fp 0.2 min Low Relaxation Normal Relaxation
(mm.) (mm²) (g/m) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
BS 5896: 2012 Y1670S7 15.2 139 1086 ± 2.0% 232 267 204 - 3.5 25 1.0*2 2.5*2 4.5*2 - - -
Y1770S7 9.3 52.0 406.1 92.0 106 81.0
11.0 70.0 546.7 124 143 109
12.5 93.0 726.3 165 190 145
15.7 150.0 1172.0 266 306 234
Y1860S7 8.0 38.0 296.8 70.7 81.3 62.2
9.3 52.0 406.1 96.7 111 85.1
9.6 55.0 429.6 102 117 89.8
11.3 75.0 585.8 140 161 123
12.5 93.0 726.3 173 199 152
12.9 100 781.0 186 214 164
15.2 139 1086 259 298 228
15.7 150 1172 279 321 246

FprEn10138-3: 2009

STANDARD Grade Nominal
diameter		 Nominal cross-
sectional area		 Mass per length Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Nominal Permissible variation Fm min Fm max Fp 0.1 min Fp 0.2 min Low Relaxation Normal Relaxation
(mm.) (mm.2) (g/m) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) (60%) (70%) (80%) (60%) (70%) (80%)
FprEn10138-3: 2009 Y1770S7 15.7 150 1172 ± 2.0% 266 306 234 - 3.5 25 - 2.5*2 4.5*2 - - -
Y1860S7 9.3 52.0 406.1 96.7 111 85.1
9.6 55.0 429.6 102 117 89.8
12.5 93.0 726.3 173 199 152
12.9 100 781.0 186 214 164
15.2 139 1086 259 298 228
15.7 150 1172 279 321 246

ASTM A416 / A416M - 24 Low Relaxation

STANDARD Grade Nominal
diameter		 Permissible
variation		 Nominal cross-
sectional area		 Nominal
Mass per length		 Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Fm min Fm max Fp 0.1
min		 Fp 0.2
min		 Low Relaxation Normal Relaxation
(mm.) (mm.) (mm²) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
ASTM A
416/A416M -24

(Low
Relaxation)		 1725 6.4 ± 0.40 23 182 40.0 - - 36.0 3.5 - - 2.5*1 3.5*1 - - -
7.9 37 294 64.5 - 58.1
9.5 52 405 89.0 - 80.1
11.1 69.7 548 120 - 108.1
12.7 92.9 730 160 - 144.1
15.2 139 1090 240 - 216.2
1860 9.53 + 0.65,
-0.15		 55 430 102 - 92.1
11.1 74.2 580 138 - 124.1
12.7 98.7 780 184 - 165.3
15.2 140 1100 261 - 234.6
15.7 150 1200 279 - 251.4

JIS G3536 : 2014

STANDARD Grade Nominal
diameter		 Permissible
variation		 Nominal cross-
sectional area		 Nominal
Mass per length		 Characteristics Elongation
(Min.)		 Curvature
(Max.)		 Max. %Relaxation at 1,000 hr.
Fm min Fm max Fp 0.1
min		 Fp 0.2
min		 Low Relaxation Normal Relaxation
(mm.) (mm.) (mm²) (g/m) (kN) (kN) (kN) (kN) (%) (mm/m) 60% 70% 80% 60% 70% 80%
JIS G3536: 2014 SWPR7A 9.3 +0.4, -0.2 51.61 405 88.8 - 75.5 - 3.5 - - 2.5*1 - - 8.0*1 -
10.8 69.68 546 120 102
12.4 92.9 729 160 136
15.2 138.7 1101 240 204
SWPR7B 9.5 +0.4, -0.2 54.84 432 102 86.8
11.1 74.19 580 138 118
12.7 98.71 774 183 156
15.2 138.7 1101 261 222
Remarks: *1 Initial load as percentage of specific minimum breaking load (Fm)., *2 Initial load as percentage of specific actual maximum force (Fma),
*3 Initial load as percentage of specific minimum tensile strength

มาตราฐานจัดส่ง

Packaging Prestressed Concrete Strand
Type Inside Diameter (mm) Outside Diameter (mm) Width (mm) Straps Weight Approx (kg)
(Normal) 800 1250 750 8/2 2,700 - 3,300
(Specific) 850* 1450* 750 8/2 2,800 - 3,600
Packaging Prestressed Concrete Wire

PC Stand ชนิด 3 เส้น


Type Inside Diameter (mm) Outside Diameter (mm) Width (mm) Straps Weight Approx (kg)
(Normal) 1300 2000 250-300 6 1,150 - 1,300