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Steel Strand

The product is mainly used as auxiliary reinforcing strand for concrete structure.e.g.long spanned bridge'son railway and highway,overhead crane construction,multi-floor industrial building and etc,Products havebeen widely applied to the major domestic rail, road, and construction.

Commodity name： Steel Strand

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Product Introduction

Prestressed concrete with steel wire, steel wire is mainhimplemented national standards GB/T5224, GB/T5223, United States standard ASTMA416. ASTMA421British standard BS5896, JlSG3536, 1S0934, international standard KSD, South Korea standard EN101387002, European standard , Malaysian Standard MS1138:PART4:2007, Australian/New Zealand StandardAS/NZS4672or the agreed technical agreement, the following are the main specifications and technicalparameters.

一、Prestressed Concrete Steel Strand

Prestressed Concrete Steel Strand

Specification	Name	Dor.Dia(mm)	Shape
Prestressed Concrete Steel Strand Series	1x2 P.C.Strand	6.0;8.0;10.0 12.0;14.0
	1x3 P.C.Strand	6.45;8.60; 10.75;12.90;15.05
	1x7 P.C.Strand (Normal or L ow relaxation)	9.0:12.0;12.7 15.0:15.20;15.24 15.70;1 7.80 18.90;21.60
	1 x9S P.C.Stand	21.8;28.6

TechnicalSpecificatior

1x7 Steel strand's size and allowable deviation, nominal cross-sectional area, theoretical weight per meter

Steel strandstructure	Nominal Dia Dn/mm	Djameter Tolerance /mm	Strand Nominal cross-sectional area So/mm²	Theoretical weight per meter/(g/m)	Range(extened)/%of core wire's diameternot less than
1X7	9.50 (9.53)	+0.30 -0.15	54.8	430	2.5
	11.10 (11.11)	+0.30 -0.15	74.2	582
	12.70	+0.40 -0.15	98.7	775
	15.20 (15.24)		140	1101
	15.70		150	1178
	17.80 (17.78)		191 (189.7)	1500
	18.90		220	1727
	21.60		285	2237
1X71	12.70	+0.40 -0.15	98.7	775
1X71	15.20 (15.24)	+0.40 -0.15	140	1101
(1X7)C	12.70	+0.40 -0.15	112	890
	15.20 (15.24)		165	1295
	1800		223	1750
Note: Supply can be made according to the specifications in parentheses

1 x 19 Steel strand's size and allowable deviation, nominal cross-sectional area, theoretical weight per meter

Steel strand structure	Nominal Dia Dn/mm	Diameter Tolerance /mm	Strand Nominal cross-sectional area So/mm²	Theoretical weight per meter/(g/m	Range(extened)/%of core wire's diameternot less than
1X19S (1+9+9)	21.8	+0.40 -0.15	313	2482
1X19S (1+9+9)	28.6	+0.40 -0.15	532	4229

1 x 2 Steel strand's size and allowable deviation, nominal cross-sectional area, theoretical weight per mete

Steel strand structure	Nominal Dia Dn/mm		Diameter Tolerance/mm	Cross section area Sn/mm²	Re.mass per meter/(g/m)
Steel strand structure	Steel strand diameter Dn/mm	Wire Dia d/mm	Diameter Tolerance/mm	Cross section area Sn/mm²	Re.mass per meter/(g/m)
1×2	5.00	2.50	+0.15 -0.05	9.82	77.1
	5.80	2.90	+0.15 -0.05	13.2	104
	8.00	4.00	+0.25 -0.10	25.1	197
	10.00	5.00		39.3	309
	12.00	6.00		56.5	444

1 x 3 Steel strand's size and allowable deviation, nominal cross-sectional area, theoretical weight per mete

Steel strand structure	Nominal Dia Dn/mm		Steel strand measurement A /mm	Measurement A Tolerance /mm	Cross section area Sn/mm²	Re.mass per meter /(g/m)
Steel strand structure	Steel strand diameter Dn/mm	Wire Dia d/mm	Steel strand measurement A /mm	Measurement A Tolerance /mm	Cross section area Sn/mm²	Re.mass per meter /(g/m)
1×3	6.20	2.90	5.41	+0.15 -0.05	19.8	155
	6.50	3.00	5.60	+0.15 -0.05	21.2	166
	8.60	4.00	7.46	+0.20 -0.10	37.7	296
	8.74	4.05	7.56		38.6	303
	10.80	5.00	9.33		58.9	462
	12.90	6.00	11.20		84.8	666
1×3l	8.70	4.04	7.54		38.5	302

1 x7 Mechanical properties of structural steel strand

Structure	Norminal dia. Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN≥	The most vigorous of the maximum whole root strand Fm,max/kN≤	0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	Stress relaxation ability
Structure	Norminal dia. Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN≥		0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	The initial load is eq-uivalent to the perc-entage of actua maximum force	1000h stress relaxation rater/%≤
1X7	9.50 (9.53)	1860	102	113	89.8	All specifications 3.5	All specifications 70 80	All specifications 2.5 4.5
	11.10 (11.11)		138	153	121
	12.70		184	203	162
	15.20 (15.24)		260	288	229
	15.70		279	309	246
	17.80 (17.78)		355	391	311
	18.90		409	453	360
	21.60		530	587	466
	9.50 (9.53)	1960	107	118	94.2
	11.10 (11.11)		145	160	128
	12.70		193	213	170
	15.20 (15.24)		274	302	241
	18.90	1820	400	444	352
	15.70	1770	266	296	234
	21.60	1770	504	561	444
1X7I	12.70	1860	184	203	162
1X7I	15.20 (15.24)	1860	260	288	229
(1X7)C	12.70	1860	208	231	183
	15.20 (15.24)	1820	300	333	264
	18.00	1720	384	428	338

1x19 Mechanical properties of structural steel strand

Structure	Norminal dia.Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN≥	The most vigorous of the maximum whole root strand Fm,max/kN≤	0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	Stress relaxation ability
							The initial load is eq-uivalent to the perc-entage of actual maximum force	1000h stress relaxation rater/%≤
1X19S (1×19+9)	21.8	1860	583	645	513	3.5	70 80	2.5 4.5
	28.6		990	1096	854
1 applicable to mining support × The relaxation rate of steel strands for 19 structures is not required.

1 x2 Mechanical properties of structural steel strand

Structure	Norminal dia.Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN	The most vigorous of the maximum whole root strand Fm,max/kN	0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	Stress relaxation ability
Structure	Norminal dia.Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN		0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	The initial load is eq-uivalent to the perc-entage of actual maximum force	1000h stress relaxation rater/%≤
1X2	5.00	1720	16.9	18.9	14.9	All specifications 3.5	All specifications 70 80	All specifications 2.5 4.5
	5.80		22.7	25.3	20.0
	8.00		43.2	48.2	38.0
	10.00		67.6	75.5	59.5
	12.00		97.2	108	85.5
	5.00	1860	18.3	20.2	16.1
	5.80		24.6	27.2	21.6
	8.00		46.7	51.7	41.1
	10.00		73.1	81.0	64.3
	12.00		105	116	92.5

1 x 3 Mechanical properties of structural steel strand

Structure	Norminal dia. Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN≥	The most vigorous of the maximum whole root strang Fm,max/kN≤	0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	Stress relaxation ability
Structure	Norminal dia. Dn/mm	Tensile strength(Rm/MPa)	Strand entire root most vigorously Fm/kN≥		0.2%Yield strength Fp0.2/kN≥	Elogation at max load Not less than Agt/%≥	The initial load is eq-uivalent to the perc-entage of actual maximum force	1000h stress relaxation rater/%≤
1X3	6.20	1720	34.1	38.0	30.0	All specifications 3.5	All specifications 70 80	All specifications 2.5 4.5
	6.50		36.5	40.7	32.1
	8.60		64.8	72.4	57.0
	10.80		101	113	88.9
	12.90		146	163	128
	6.20	1860	36.8	40.8	32.4
	6.50		39.4	43.7	34.7
	8.60		70.1	77.7	61.7
	8.74		71.8	79.5	63.2
	10.80		110	121	96.8
	12.90		158	175	139

Mechanics properties of steel strand-KSD7002

Strand type	Nominal diameter(mm)	Tolerance(mm)	Area of sectionr(mm²)	Re.mass per meter(g/m)	Tensile strength not less than(Rm/MPa )	Breaking force(Fm/kN)	Non proportiona extension not less than(Fp0.2/kN)	Elongation not less than(Agt/%)	Stress relaxation ability
									Tne initial load is equivalent to the perc-entage of nominal maximum force	The relaxation at 1000h not more than
SWPC7BN SWPC7BL	9.50	+0.40 -0.20	54.84	432	1860	102	86.8	All specifications 3.5%	AIl specifications 60% 70% 80%	AIl specifications 1.0% 2.5% 4.5%
	11.10		74.19	580		138	118
	12.70		98.71	774		183	156
	15.20		138.7	1101		261	222

Mechanics properties of steel strand-ASTMA416

Grade	Nominal dia(mm)	Tolerance(mm)	Cross section area (So/mm²)	Be.mass per 1000m (Kg/1000m)	Minimum Breaking load	Min Load at 1% Extension(KN)	Lo≥610mm(%)	The relaxation at 1000h (Initial load to 70% of nominal max load)(r/%) Not more than
Grade	Nominal dia(mm)	Tolerance(mm)	Cross section area (So/mm²)	Be.mass per 1000m (Kg/1000m)	Minimum Breaking load	Min Load at 1% Extension(KN)	Lo≥610mm(%)	Low-Relaxation	Nomal-Relaxation
250 [1725]	9.53	±0.40	5161	405	89.0	80.1	3.5	2.5	3.5
	11.11		69.68	548	120.1	108.1
	12.70		92.90	730	160.1	144.1
	15.24		139.35	1094	240.2.	216.2
270 [1860]	9.53	+0.65 -0.15	5484	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

British Standard-BS5896

Strand type	Nominal diameter(mm)	Tolerance(mm)	Area ofsectionr(mm²)	Theoretical Weight per 1000 metre(kg)	Tensile Strength	Specified characte-ristic breaking Load	Specified characte-ristic 0.1% yielding Load	Load at 1% Elongation Lo≥500mm	Minimun Elongation at MAX load	Relaxation Value 1000h
										60% Initial Load	70% Initial Load	80% Initial Load
Standard 7-wire	9.3	+0.3	52	408	1770	92	78	81	3.5	1.0	2.5	4.5
		-0.15
	11	-0.3	71	557	1770	125	106	110	3.5	1.0	2.5	4.5
		-0.15
	12.5	+0.4	93	730	1770	164	139	144	3.5	1.0	2.5	4.5
		-0.2
	15.2	+0.4	139	1090	1670	232	197	204	3.5	1.0	2.5	4.5
		-0.2
Super 7-wire	9.6	+0.3	55	432	1860	102	87	90	3.5	1.0	2.5	4.5
		-0.15
	11.3	-0.3	75	590	1860	139	118	122	3.5	1.0	2.5	4.5
		-0.15
	12.9	+0.4	100	785	1860	186	158	163	3.5	1.0	2.5	4.5
		-0.2
	15.7	+0.4	150	1180	1770	265	225	233	3.5	1.0	2.5	4.5
		-0.2
Die-drawn 7-wire	12.7	+0.4	112	890	1860	209	178	184	3.5	1.0	2.5	4.5
		-0.2
	15.2	+0.4	165	1295	1820	300	255	264	3.5	1.0	2.5	4.5
		-0.2
	18	+0.4	223	1750	1700	380	323	334	3.5	1.0	2.5	4.5
		-0.2

Japanese Standard-JISG3536

Steelgrade	Nominal diameter(mm)	Tolerance(mm)	Area of sectionr(mm²)	Theoretical Weight per 1000 metre(kg)	Breaking Load(≥KN)	Load at 0.2% Permanent elongation(≥KN)	Minimum elongation at Max Load≥(%)	Relaxation Value≤(%)
SWPR7A	9.3		51.61	405	88.8	75.5	3.5	2.5
	10.8		69.68	546	120	102	3.5	2.5
	12.4		92.901	729	160	136	3.5	2.5
	15.2		38.70	1101	240	204	3.5	2.5
SWPR7B	9.5		5484	432	102	86.8	3.5	2.5
	11.1		74.19	580	138	118	3.5	2.5
	12.7		98.71	774	183	156	3.5	2.5
	15.2		138.70	1101	261	222	3.5	2.5

Australian Standard (AS/NZS 4672)

Strand type	Nominal Diameter(mm)	Area of sectionr (mm²)	Theoretical Weight per 1000 metre		Tensile Strength	Minimum breaking force(KN)	Specified charactenstic 0.1% yielding load	Specified characteristic 0.1 % yielding load	Minimum elongation at Max Load≥(%)	Relaxation value 1000h
Strand type	Nominal Diameter(mm)	Area of sectionr (mm²)	Nominal Value(kg)	Tolerance%	Tensile Strength	Minimum breaking force(KN)	Specified charactenstic 0.1% yielding load	Specified characteristic 0.1 % yielding load	Minimum elongation at Max Load≥(%)	70% Initial Load	80% Initial Load
7-wire ordinary	9.3	51.6	405	+4/-2	1720	88.8	72.8	75.4	3.5	2.5	3.5
	9.5	55.0	432		1850	102	83.6	86.6
	11.1	73.9	580		1870	138	113	117
	12.4	92.9	729		1720	160	131	136
	12.7	98.6	774		1870	184	151	156
	12.9	100	785		1840	186	158	165
	15.2	140	1101		1790	250	205	212
	15.2	140	1101		1860	261	214	222
	18.0	190	1492		1780	338	277	287
	18.0	190	1492		1850	353	289	300

Malaysian Standard (MS1138: PART4)

Strand type	Nominal Diameter(mm)	Area of sectionr (mm²)	Theoretical Weight per 1000 metre		Tensile Strength	Minimum breaking force(KN)	Specified charactenstic 0.1 % yielding load	Specified characteristic 0.1% yielding load	Minimum elongation at Max Load≥(%)	Relaxation value 1000h
			Nominal Value(kg)	Tolerance%						70% Initial Load	80% Initial Load
7-wire ordinary	9.5	54.8	432	+4/-2	1860	102	83.6	86.6	3.5	2.5	4.5
	12.7	98.7	774		1860	184	151	156
	15.2	139	1101		1860	259	212	220

Steel strand wire stands as a testament to the remarkable fusion of strength, flexibility, and durability, making it an indispensable material across various industries. This concise exploration delves into the distinctive characteristics of steel strand wire, highlighting its versatility and wide-ranging applications in engineering, construction, telecommunications, and beyond.

At its core, steel strand wire is crafted from high-quality steel, meticulously engineered to deliver exceptional tensile strength and resilience. Its composition undergoes rigorous manufacturing processes, resulting in a product that boasts superior load-bearing capabilities, making it ideal for applications requiring robust structural support.

One of the key features of steel strand wire is its remarkable flexibility despite its inherent strength. This attribute enables it to be effortlessly shaped and manipulated, allowing for versatile usage in an array of construction projects. Whether reinforcing concrete structures, erecting suspension bridges, or securing slopes in civil engineering projects, steel strand wire offers unmatched adaptability to meet diverse design requirements.

Moreover, steel strand wire's corrosion-resistant properties make it well-suited for outdoor applications, where exposure to environmental elements is unavoidable. From coastal regions to harsh industrial environments, its protective coating ensures long-term durability, safeguarding structures against degradation and minimizing maintenance costs over time.

In the realm of telecommunications, steel strand wire plays a pivotal role in the deployment of aerial cables for telecommunication networks. Its high tensile strength and minimal elongation characteristics make it an ideal choice for supporting cables over long spans, ensuring reliable signal transmission even in challenging terrain.

Furthermore, steel strand wire finds extensive utility in the field of agriculture, particularly in vineyard trellising and orchard support systems. Its robust construction provides sturdy support for growing crops, while its flexibility allows for natural movement, promoting healthy plant growth and maximizing yields.

Beyond its industrial applications, steel strand wire serves as a foundational element in the creation of artistic installations and sculptures. Its malleability enables artists to fashion intricate shapes and forms, while its enduring strength ensures structural integrity, resulting in captivating works of art that stand the test of time.

In summary, steel strand wire epitomizes the harmonious blend of strength, flexibility, and longevity, making it an indispensable asset in various industries and creative endeavors. Whether fortifying infrastructure, enhancing telecommunications networks, or cultivating agricultural landscapes, its versatility and reliability continue to redefine the possibilities of modern engineering and innovation.

Key words:

Zinc-coated wire | Galvanized Wire | Spool Wire | Barbed Wire | Steel strand

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