Bare Conductors
GSW — Galvanized Steel Wire/Strand
galvanized steel wire strand, galvanized steel strand manufacturer, ASTM A475 steel strand, galvanized guy wire, overhead ground wire strand, galvanized steel guy strand, power transmission line strand, galvanized steel wire rope strand, Class A galvanized strand, Class B galvanized strand, Class C galvanized strand
- Hot-Dip Galvanized Steel Wire | High Tensile Strength
- Excellent Corrosion Resistance | Durable Performance
- Overhead Power Lines | Grounding & Earthing Systems
- Direct Factory Supply | Bulk Orders Welcome | MOQ: 10KM
- Custom Diameters & Specifications Available
- Galvanized Steel Wire Strand Manufacturer | QZ Cable
Product Description
Application
The galvanized steel wire also named Guy Wire, Earth wire with Galvanised Steel Wire (GSW) or Aluminium Clad steel (ACS) & Stay Wire. Strand is used for overhead ground lines or electrical power transmission lines. Stay or guy wire strands are produced for use with poles, towers, or any other form of guying.
The galvanized single steel wires or stranded steel wires are suitable for cores of ACSR to improve its tensile strength. And they can also be used in the aerial transmission line as the line material of ground connection to avoid the lightning strike.
Bare concentric-lay-stranded conductors are made from bare, hard-drawn, round, aluminum clad steel wires for general use of electrical purposes. Tensile strength and zinc-clad of steel wire have different grades.
- Pole and tower support systems
- Overhead line guying and anchoring
- Grounding and earthing networks
- Shielding earth wires for transmission lines
- Infrastructure requiring mechanical stability and structural reinforcement
Standard
Specification
● IEC 61089 Round Wire Concentric Lay Overhead Electrical Stranded Conductors
● ASTM A 475 Zinc-Coated Steel Wire Strand
● BS 183 General Purpose Galvanized Steel Wire Strand
● AS 1222.1 Steel Conductors and Stays—Bare overhead Part 1: Galvanized (SC/GZ)
● GB/T 1179 Round Wire Concentric Lay Overhead Electrical Stranded Conductors
Construction
Concentrically stranded Galvanized steel wire strand available in class “A”, “B” and “C” galvanizing, “A” being the least heavy and “C” being the most heavy. Manufactured without welds per ASTM A-363 or with welds per ASTM A-475. Strands are formed to remain substantially in place when severed.
Construction Parameters
ASTM A 475
| Nominal diameter of strand | Number of Wires in Strand | Nominal Diameter of Coated Wire in Strand | Approx. weight of strand | Minimun Breaking Strength of Strand | |||||
| Utilities Grade | Common Grade | Siemens- Martin Grade | High- Strength Grade | Extra-high Strength Grade | |||||
| In. | mm | mm | kg/km | kN | kN | kN | kN | kN | |
| 1/8 | 3.18 | 7 | 1.04 | 48 | – | 2.402 | 4.048 | 5.916 | 8.140 |
| 5/32 | 3.97 | 7 | 1.32 | 76 | – | 3.870 | 6.539 | 9.519 | 13.078 |
| 3/16 | 4.76 | 7 | 1.57 | 109 | – | 5.115 | 8.452 | 12.677 | 17.748 |
| 3/16 | 4.76 | 7 | 1.65 | 119 | 10.676 | – | – | – | – |
| 7/32 | 5.56 | 3 | 2.64 | 131 | – | 6.228 | 10.409 | 15.569 | 21.796 |
| 7/32 | 5.56 | 7 | 1.83 | 146 | – | 6.850 | 11.387 | 17.126 | 24.020 |
| 1/4 | 6.35 | 3 | 3.05 | 174 | 14.012 | 8.274 | 13.523 | 21.040 | 29.981 |
| 1/4 | 6.35 | 3 | 3.05 | 174 | 20.017 | – | – | – | – |
| 1/4 | 6.35 | 7 | 2.03 | 180 | – | 8.452 | 14.012 | 21.129 | 29.581 |
| 9/32 | 7.14 | 3 | 3.30 | 204 | – | 9.252 | 15.035 | 23.398 | 33.362 |
| 9/32 | 7.14 | 7 | 2.36 | 244 | 20.462 | 11.432 | 18.905 | 28.469 | 39.812 |
| 5/16 | 7.94 | 3 | 3.68 | 255 | 28.913 | 11.076 | 18.193 | 28.246 | 40.479 |
| 5/16 | 7.94 | 7 | 2.64 | 305 | – | 14.234 | 23.798 | 35.586 | 49.820 |
| 5/16 | 7.94 | 7 | 2.77 | 335 | 26.689 | – | – | – | – |
| 3/8 | 9.52 | 3 | 4.19 | 328 | 37.810 | 14.813 | 24.732 | 37.187 | 52.489 |
| 3/8 | 9.52 | 7 | 3.05 | 407 | 51.155 | 18.905 | 30.915 | 48.040 | 68.503 |
| 7/16 | 11.11 | 7 | 3.68 | 595 | 80.068 | 25.355 | 41.591 | 64.499 | 92.523 |
| 1/2 | 12.70 | 7 | 4.19 | 770 | 111.206 | 32.917 | 53.823 | 83.627 | 119.657 |
| 1/2 | 12.70 | 19 | 2.54 | 751 | – | 33.895 | 56.492 | 84.961 | 118.768 |
| 9/16 | 14.29 | 7 | 4.78 | 1000 | – | 42.703 | 69.837 | 108.981 | 155.688 |
| 9/16 | 14.29 | 19 | 2.87 | 949 | – | 42.881 | 71.616 | 107.202 | 149.905 |
| 5/8 | 15.88 | 7 | 5.26 | 1211 | – | 51.599 | 84.961 | 131.667 | 188.605 |
| 5/8 | 15.88 | 19 | 3.18 | 1186 | – | 48.930 | 80.513 | 124.995 | 178.819 |
| 3/4 | 19.05 | 19 | 3.81 | 1721 | – | 71.172 | 116.543 | 181.487 | 259.331 |
| 7/8 | 22.22 | 19 | 4.50 | 2356 | – | 97.416 | 159.691 | 248.211 | 354.523 |
| 1 | 25.40 | 19 | 5.08 | 3089 | – | 127.664 | 209.066 | 325.610 | 464.839 |
| 1 | 25.40 | 37 | 3.63 | 3065 | – | 125.885 | 205.508 | 319.827 | 456.832 |
| 1 1/8 | 28.58 | 37 | 4.09 | 4010 | – | 160.136 | 262.000 | 407.457 | 581.827 |
| 1 1/4 | 31.75 | 37 | 4.55 | 4840 | – | 198.391 | 324.720 | 505.318 | 721.502 |
Note:Class A and Class B and Class C are in same structure.
BS 183
| Construction Number of wires/wire diameter | Approximate strand diameter | Minimum breaking load of strand | Approx. | ||||||
| mass | |||||||||
| Grade 350 | Grade 480 | Grade 700 | Grade 850 | Grade 1000 | Grade 1150 | Grade 1300 | |||
| mm | kN | kN | kN | kN | kN | kN | kN | kg/1000 m | |
| 3/1.80 | 3.9 | 2.65 | 3.66 | — | — | — | — | — | 60 |
| 3/2.65 | 5.7 | 5.8 | 7.95 | — | — | — | — | — | 130 |
| 3/3.25 | 7 | 8.7 | 11.95 | — | — | — | — | — | 195 |
| 3/4.00 | 8.6 | 13.2 | 18.1 | — | — | — | — | — | 295 |
| 4/1.80 | 4.4 | 3.55 | 4.9 | — | — | — | — | — | 80 |
| 4/2.65 | 6.4 | 7.7 | 10.6 | — | — | — | — | — | 172 |
| 4/3.25 | 7.9 | 11.6 | 15.9 | — | — | — | — | — | 260 |
| 4/4.00 | 9.7 | 17.6 | 24.1 | 35.2 | — | — | — | — | 390 |
| 5/1.50 | 4.1 | 3.1 | 4.24 | 6.18 | — | — | — | — | 69 |
| 5/1.80 | 4.9 | 4.45 | 6.1 | 8.9 | — | — | — | — | 95 |
| 5/2.65 | 7.2 | 9.65 | 13.25 | 19.3 | — | — | — | — | 220 |
| 5/3.25 | 8.8 | 14.5 | 19.9 | 29 | — | — | — | — | 320 |
| 5/4.00 | 10.8 | 22 | 30.15 | 43.95 | — | — | — | — | 490 |
| 7/0.56 | 1.7 | 0.6 | 0.83 | 1.2 | — | 1.7 | 1.98 | 2.24 | 14 |
| 7/0.71 | 2.1 | 0.97 | 1.33 | 1.94 | — | 2.75 | 3.19 | 3.6 | 28 |
| 7/0.85 | 2.6 | 1.39 | 1.9 | 2.8 | — | 3.95 | 4.57 | 5.15 | 31 |
| 7/0.90 | 2.7 | 1.55 | 2.14 | 3.1 | — | 4.45 | 5.12 | 5.8 | 35 |
| 7/1.00 | 3 | 1.92 | 2.64 | 3.85 | — | 5.5 | 6.32 | 7.15 | 43 |
| 7/1.25 | 3.8 | 3.01 | 4.1 | 6 | — | 8.55 | 9.88 | 11.15 | 67 |
| 7/1.40 | 4.2 | 3.75 | 5.17 | 7.54 | 9.16 | 10.75 | 12.35 | 14 | 84 |
| 7/RSa | 4.3 | 3.85 | 5.28 | 7.7 | 9.35 | 11 | 12.65 | 14.3 | 86 |
| 7/1.60 | 4.8 | 4.9 | 6.75 | 9.85 | 11.95 | 14.1 | 16.2 | 18.3 | 110 |
| 7/1.80 | 5.4 | 6.23 | 8.55 | 12.45 | — | 17.8 | 20.5 | 23.2 | 140 |
| 7/2.00 | 6 | 7.7 | 10.55 | 15.4 | — | 22 | 25.3 | 28.6 | 170 |
| 7/2.36 | 7.1 | 10.7 | 14.7 | 21.4 | — | 30.6 | 35.2 | 39.8 | 240 |
| 7/2.65 | 8 | 13.5 | 18.5 | 27 | — | 38.6 | 44.4 | 50.2 | 300 |
| 7/3.00 | 9 | 17.3 | 23.75 | 34.65 | — | 49.5 | 56.9 | 64.3 | 392 |
| 7/3.15 | 9.5 | 19.1 | 26.2 | 38.2 | — | 54.55 | 62.75 | 70.9 | 430 |
| 7/3.25 | 9.8 | 20.3 | 27.85 | 40.65 | — | 58.05 | 66.8 | 75.5 | 460 |
| 7/3.65 | 11 | 25.6 | 35.15 | 51.25 | — | 73.25 | 84.2 | 95.2 | 570 |
| 7/4.00 | 12 | 30.9 | 42.2 | 61.6 | — | 88 | 101 | 114 | 690 |
| 7/4.25 | 12.8 | 34.75 | 47.65 | 69.5 | — | 99.3 | 114 | 129 | 780 |
| 7/4.75 | 14 | 43.4 | 59.45 | 86.8 | — | 124 | 142.7 | 161.3 | 970 |
| 19/1.00 | 5 | 5.22 | 7.16 | 10.45 | — | 14.92 | 17.16 | 19.4 | 120 |
| Construction Number of wires/wire diameter | Approximate strand diameter | Minimum breaking load of strand | Approx. | ||||||
| mass | |||||||||
| Grade 350 | Grade 480 | Grade 700 | Grade 850 | Grade 1000 | Grade 1150 | Grade 1300 | |||
| mm | kN | kN | kN | kN | kN | kN | kN | kg/1000 m | |
| 19/1.25 | 6.3 | 8.16 | 11.19 | 16.32 | — | 23.32 | 26.81 | 30.31 | 180 |
| 19/1.40 | 7 | 10.24 | 14.04 | 20.47 | — | 29.25 | 33.64 | 38.02 | 230 |
| 19/1.60 | 8 | 13.37 | 18.34 | 26.75 | — | 38.2 | 43.93 | 49.66 | 300 |
| 19/2.00 | 10 | 20.9 | 28.65 | 41.78 | 50.74 | 59.69 | 68.64 | 77.6 | 470 |
| 19/2.50 | 12.5 | 32.65 | 44.8 | 65.29 | 79.28 | 93.27 | 107.3 | 121.3 | 730 |
| 19/3.00 | 15 | 47 | 64.5 | 94 | 114.1 | 134.3 | 154.5 | 174.6 | 1050 |
| 19/3.55 | 17.8 | 65.8 | 90.27 | 131.6 | 159.9 | 188 | 216.3 | 244.5 | 1470 |
| 19/4.00 | 20 | 83.55 | 114.6 | 167.1 | 203 | 238.7 | 274.6 | 310.4 | 1870 |
| 19/4.75 | 23.8 | 117.85 | 161.6 | 235.7 | 286 | 336.7 | 387.2 | 437.7 | 2630 |
| The construction of this strand consists of six wires of 1.40 mm diameter on a centre wire of 1.50 mm diameter. The diameter of the centre wire shall not be less than 0.08 mm nor more than 0.12 mm greater than the diameter of the outer wire. | |||||||||
AS 1222.1
| Standing and wire diameter | Approx. overall diameter | Cross-section area | Approx. mass per km | Calculated breaking load (CBL) | Equivalent aluminium area | Typical d.c. resistance per km at 20°C |
| mm | mm | mm² | kg | kN | mm² | Ω |
| 3/2.00 | 4.31 | 9.426 | 74 | 11.7 | 1.4 | 20 |
| 3/2.75 | 5.93 | 17.82 | 140 | 22.2 | 2.6 | 11 |
| 7/2.00 | 6 | 21.99 | 173 | 26 | 3.2 | 8.7 |
| 7/2.75 | 8.25 | 41.58 | 328 | 49 | 6.1 | 4.6 |
| 7/3.25 | 9.75 | 58.07 | 458 | 68.7 | 8.6 | 3.3 |
| 7/3.75 | 11.3 | 77.28 | 609 | 91.3 | 11 | 2.5 |
| 19/2.00 | 10 | 59.7 | 473 | 70.5 | 8.8 | 3.2 |
| 19/2.75 | 13.8 | 112.9 | 894 | 133 | 17 | 1.7 |
| 19/3.25 | 16.3 | 157.6 | 1250 | 186 | 23 | 1.2 |
IEC 60189
| Code No. | Section Area | No./Dia of Wire | Approx. Overall Diameter | Approx. Weight | Breaking Load | DC Resistance at 20°C Max. | |||
| S1A | S1B | S2A | S3A | ||||||
| mm² | No./mm | mm | kg/km | kN | kN | kN | kN | Ohm/km | |
| 4 | 27.1 | 7/2.22 | 6.66 | 213.3 | 36.3 | 33.6 | 39.3 | 43.9 | 7.1445 |
| 6.3 | 42.7 | 7/2.79 | 8.36 | 335.9 | 55.9 | 51.7 | 60.2 | 67.9 | 4.5362 |
| 10 | 67.8 | 7/3.51 | 10.53 | 553.2 | 87.4 | 80.7 | 93.5 | 103.0 | 2.8578 |
| 12.5 | 84.7 | 7/3.93 | 11.78 | 666.5 | 109.3 | 100.8 | 116.9 | 128.8 | 2.2862 |
| 16 | 108.4 | 7/4.44 | 13.32 | 853.1 | 139.9 | 129.0 | 199.7 | 164.8 | 1.7861 |
| 16 | 108.4 | 19/2.70 | 13.48 | 857.0 | 142.1 | 131.2 | 152.9 | 172.4 | 1.7944 |
| 25 | 169.4 | 19/3.37 | 16.85 | 1339.1 | 218.6 | 201.6 | 238.9 | 262.6 | 1.1484 |
| 40 | 271.1 | 19/4.26 | 21.31 | 2141.6 | 349.7 | 322.6 | 374.1 | 412.1 | 0.7177 |
| 40 | 271.1 | 37/3.05 | 21.38 | 2148.1 | 349.7 | 322.6 | 382.3 | 420.2 | 0.7196 |
| 63 | 427.0 | 37/3.83 | 26.83 | 3383.2 | 550.8 | 508.1 | 589.3 | 649.0 | 0.4569 |
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Type and routine tests are issued from our own testing centre under the ISO 9001 quality system — test reports and certificates accompany every shipment.
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- Both drum ends sealed and protected for sea freight
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