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Steel wires for the prestressing of concrete

Steel wires for prestressed concrete main implementation of national standards GB/T5223-2014.strand Executive GB/T5224-2003 standard,American standard ASMA416,ASTMA421,British Standard BS5896,Japanese Standard JlSG3536,international standards IS06934,the European standard EN10138 or consultation by the two sides agreed to supply the technology, the following main specifications for the products and technical parameters.

Commodity name： Steel wires for the prestressing of concrete

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This product is mainly used for prestressde and post-tensioning tech-nology in big,medium and small sized of various shapes of PC structures,and widely used for civil engineering construction of large scale railroad,high-way bridges,buildings trusses,overhead crane besms industrial and civil prefabricated concrete floor,wall board,tubular piles,powers and nuclear power station,etc.

Steel wire with plane surface size and Tolerance each meter reference quality《GB/T5223-2014》

Nominal diameter dn/mm	Diameter allowable deviation /mm	Nominal cross-sectional area Sn/mm²	Reference mass per meter /(g/m)
3.00	±0.04	7.07	55.5
4.00	±0.04	12.57	98.6
5.00	±0.05	19.63	154
6.00		28.27	222
6.25		30.68	241
7.00		38.48	302
8.00	±0.06	50.26	394
9.00		63.62	499
10.00		78.54	616
12.00		113.1	888

PC Steel wire with spiral ribs size and Tolerance《GB/T5223-2014》

Nominal diameter dn/mm	Spiral rib Quantity/piece	Base circle size		Outer wheel profile dimensions		Single auxiliary size	Spiral rib lead C/mm
Nominal diameter dn/mm	Spiral rib Quantity/piece	Base diameter D1/mm	Allowable deviation /mm	Outer contour diameter D/mm	Allowable deviation /mm	width a/mm	Spiral rib lead C/mm
4.00	4	3.85	±0.05	4.25	±0.05	0.90-4.30	24-30
4.80	4	4.60		5.10		1.30-1.70	28-36
5.00	4	4.80		5.30		1.30-1.70	28-36
6.00	4	5.80		6.30		1.60-2.00	30-38
6.25	4	6.00		7.70		1.60-2.00	30-40
7.00	4	6.73		7.46	±0.10	1.80-2.20	35-45
8.00	4	7.75		8.45		2.00-2.40	40-50
9.00	4	8.75		9.45		2.10-2.70	42-52
10.00	4	9.75		10.45		2.50-3.00	45-58

Elimination of stress-ray circular and spiral rib steel mechanical properties《GB/T5223--2014》

Nominal diameter dn/mm	tensile strength σb/MPa Not less than	Non proportional regulation Elongation stress σp0.2/MPa Not less than		Total under maximum force elongation (Lo=200mm)	Bending frequency/ (Times/180 °) Not less than	bending radius R/mm
							The initial stress is equivalent to the percentage of the nominal tensile strength,%	After 1000 hoursStress relaxation rater1% Not greater than
		WLR	WNR					WLR	WNR
3.00	1470 1570 1670 1770 1860	1290 1380 1470 1560 1640	1250 1330 1410 1500 1580	3.5	3	10	60 70 80	1.0 2.0 4.5	4.5 8 12
4.00					4	15
5.00
6.00	1470 1570 1670 1770	1290 1380 1470 1560	1250 1330 1410 1500		4	15
6.25					4	20
7.00					4	20
8.00	1470 1570	1290 1380	1250 1330		4	20
9.00					4	25
10.00	1470	1290	1250		4	25
12.00					4	30

Shape and size of two sides indented P.C.wire

d		h		a		b		R
Nominal diameter	Tolerance	Nominal size	Tolerance	Nominal size	Tolerance	Nominal size	Tolerance	Nominal size	Tolerance

5.00	±0.05	4.60	±0.50	3.50	±0.50	3.50	±0.50	3.50	±0.50
7.00		6.60

GB/T 5223-2003

Type	Nominal Diameter mm	Nomina Area mm ²	Nomina Tensile Strength Not less than MPa	Min.Strength at 0.2% Non- proportiona Extension Not less than MPa		Elongation ar Max.Load (L0=200mm) No less than	Perverse bend L0≥500mm		Relaxation
				WLR	WNR		Bend Times Not less than (Times/180 °)	Bend Radius mm	nitial Load Nomina Tensile Strength	1000h Value no more than
										WLR	WNR
Smooth indented helica rib	4.00	12.57	1470 1570 1670 1770 1860	1290 1380 1470 1560 1640	1250 1330 1410 1500 1580	3.5%	3	10	60% 70% 80%	1.0% 2.5% 4.5	4.5% 8% 12%
	4.80	18.10					4	15
	5.00	19.63
	6.00	28.27	1470 1570 1670 1770	1290 1380 1470 1560	1250 1330 1410 1500
	6.25	30.68						20
	7.00	38.48
	8.00	50.26	1470 1570	1290 1380	1250 1330
	9.00	63.62						25
	10.00	78.54	1470	1290	1250
	12.0	113.1						30

AS 1310-1987

Type	Nominal Diameter mm	Tolerange mm	Range of Tensile Strength Not less thanMPa		Min Strength at 0.2%Non- proportional Extension Not less thanMPa	Min Elongation after fracture L0=250mm	Perverse bend L≥500mm		Relaxation
			Min	Max			Bend Times Not less than （Times/180 °）	Bend Radius mm	Initial Strength Nominal Min Tensile Strength	1000h Value no more than
										Normal	Low
Cold drawn wire	2.0	±0.025	2000 1850	2250 2100	75% Min. Tensile Strength	1.5%	******	******	******	******	******
	2.5
Round wire and indented wire	3.0	±0.005	1700 1850 1700 1550 1700 1550 1620 1700	1950 2100 1950 18000 1950 1800 1870 1950	85% Min. Tenslle Strength	2.5%	All the wire 3 times without fracture	10	70% 80%	6.5% 8.5%	2.0% 3.0%
	3.0							10
	4.0					3.5%		10
	5.0							15
	5.0							15
	7.0							20
	7.0							20
	7.0							20
	8.0	±0,075	1450 1550	1700 1800				25
	8.0							25

ASTM A421-1998

Nominal Diameter		Min Tenslle Strength MPa		Min.Strength at 1%Extenslon Not less than MPa		Min. Elongation L₀=250mm	Relaxation
in	mm	Type BA MPa	Type WA MPa	Type BA MPa	Type WA MPa		Initial Strength Nominal Min Tensile Strength	1000h Value no more than Normal
0.192	4.88	-	1725	-	1465	4.0%	70% 80%	2.5% 3.5%
0.196	4.98	1655	1725	1407	1465
0.250	6.35	1655	1655	1407	1407
0.276	7.01	1620	1620	1377	1377

BS 5896-1980

Nominal Diameter mm	Nominal Tensile Strengt MPa	Nominal Area mm²	Min. Breaking Load kN	Load at 1% Elongation kN	Min. Elongation at Max Load L0.200mm	Ductility Test		Relaxation
						Reverse Bends		Initial Load Actual Breaking Load	1000h Value No more than
						Bends Times Not less than (times/180 °)	Bend Radius mm		Relax Class 1	Relax Class 2
7 7	1570 1670	38.5	60.4 64.3	51.3 54.3	3.5%	4 times for smooth wires 3 times for indented wires	20	60% 70% 80%	4.5% 8% 125	1.0% 2.5% 4.5%
6 6	1670 1770	28.3	47.3 50.1	40.2 42.6			15
5 5	1670 1770	19.6	32.7 34.7	21.8 29.5			15
4.5	1620	15.9	25.8	21.9			15
4 4	1670 1670	12.6	21.3 22.3	17.9 19.0			10

JIS G 3536-1994

Type	Nominal Diameter mm	Diameter Tolerance mm	Min. Breaking Load kN	Min.Load at 0.2% Non-proportional Extension kN	Min.Elongation L₀-100mm %	Relaxation
						Initial Load Nominal Breaking Load	1000h Value no more than
							Normal	Low
SWPR1AN SWPR1AL SWPD1N SWPD1L	2.9	±0.03	12.7	11.3	3.5	70%	8.0%	2.5%
	4	±0.04	21.1	18.60
	5	±0.05	31.9	27.90	4.0
	6		44.1	38.70
	7		58.3	51.00	4.5
	8	±0.06	74.0	64.20
	9		90.2	78.00
SWPR1BN	5	±0.05	33.8	29.90	4.0
	7		62.3	54.90	4.5
	8	±0.06	78.9	69.10

PC WIRE-Low Relaxation

STANDARD	Gade (Mpe)	Diameter (mm)		Nomi nal Area (mm²)	Weight (kgk)		Breaking Load (min) (kN)	Yield Load (min)(kN)			Indented Deph (mm)	Elogatio n(%)	Reverse Bend (times)	Staightness mm.	Relaxation at 1000 Hr.(%mm) lnitial Load (%)
STANDARD	Gade (Mpe)	Norminal	Dia	Nomi nal Area (mm²)	Nomind	Tolerince	Breaking Load (min) (kN)	0.1%	0.2%	0.3%	Indented Deph (mm)	Elogatio n(%)	Reverse Bend (times)	Staightness mm.	60	70	80
JIS G3536-1999	SWPDIL Deformed SWPRILR ound	4.00 5.00 6.00 7.00 8.00 9.00	±0.04	12.57	98.7		21.1		18.6			≥3.5 ≥4.0 ≥4.0 ≥4.5				≤2.5 II
			±0.05	9.64	154.0		31.9		27.9
			±0.05	28.27	222.0		44.1		38.7
			±0.05	38.48	302.0		58.3		51.0
			±0.05	50.27	395.0		74.0		64.2			≥4.5
			±0.06	63.62	499.0		90.2		78.0			≥4.5
BS5896-1980	1770	4.00	±0.04	12.6	98.9	±2.0	22.3	18.5		19.0	0.07-0.17	≥3.5	4 for Plain wig.3 for Indented wire	Not exceed 30 mm,Over lmgth 1 m	≤1.0 (A)	≤2.5 II	≤4.5 II
	1670	4.00	40.04	12.6	98.9	±2.0	21.0	17.5		17.9	0.07-0.17
	1620	4.50	±0.05	15.9	125.0	±2.7	25.8	21.4		21.9	0.07-0.17
	1860	5.00	±40.05	19.6	154.0	±3.1	36.5	30.3		31.0	0.07-0.17
	1770	5.00	±40.05	19.6	154.0	±3.1	34.7	28.8		29.5	0.07-0.17
	1670	5.00	±10.05	19.6	154.0	±3.1	32.7	27.2		21.8	0.07-0.17
	1770	6.00	±0.05	28.3	222.0	±3.7	50.1	41.6		42.6	0.10-0.20
	1670	6.00	±40.05	28.3	222.0	±3.7	47.3	39.3		40.2	0.10-0.20
	1670	7.00	±40.05	38.5	302.0	±4.3	64.3	53.4		54.7	0.10-0.20
	1570	7.00	±0.05	38.5	302.0	±4.3	60.4	50.1		51.3	0.10-0.20
AS/NZS 4672- 2007	1770	4.00		12.6	98.9	±2.0	22.3	18.5	19.0			≥3.5	4 for Plain wire.3 for Indented wire	Not exceed 25 mm,Over length 1 m			≤3.0 II
	1770	5.00		19.6	154.0	±3.1	34.7	28.8	29.5
	1670	5.00		9.6	154.0	±3.1	32.7	27.2	27.8
	670	6.00		28.3	222.0	±3.7	47.3	39.3	40.2
	670	7.00		38.5	302.0	±4.3	64.3	50.1	51.3
	1570	8.00		50.3	395.0	±5.9	79.0	65.6	67.1
	470	9.00		63.6	499.0	±7,2	93.5	74.8	76.7
EN10138-2004	Y1860C	4.00		12.6	98.4	±2.0	23.4	20.8			0.06-0.13 0.06-0.13 0.06-0.13	≥3.5	4 for Plain wire.3 for ndented wire	Not exceed 25 mm,Over lngth 1 m			≤4.5 I
	W1770C	4.00		12.6	98.4	±2.0	22.3	19.6
	Y1770C	5.00		19.6	153.1	±3.1	34.7	30.5
	Y1670C	5.00		19.6	153.1	±3.1	32.7	28.8			0.06-0.13
	Y1770C	6.00		28.3	221.0	±4.4	50.1	44.1			0.09-0.16
	Y1670C	6.00		28.3	221.0	±4.4	47.3	41.6			0.09-0.16 0.09-0.16 0.09-0.16
	Y1670C	7.00		38.5	300.7	±6.0	64.3	56.6
	Y1570C	7.00		38.5	300.7	±6.0	60.4	53.2
ASTM A421- 2005	WA	4.98	±0.0 5	19.48	152.9		33.60			28.54		≥4.0		Not exceed 3 nch,Over length 60 inch			≤3.5 II
		6.35		31.67	248.6		52.41			44.56
		7.01		38.59	302.9		62.52			53.14
	BA	4.98		19.48	152.9		32.24			27.41 44.56 53.14
		6.35		31.67	248.6		52.41
		7.01		38.59	302.9		62.52

1=%OF ACTUAL BREAKING LOAD II-%OF MINIMUM BREAKING LOAD

Steel wire stands as a cornerstone of modern engineering, embodying strength, resilience, and adaptability in its very essence. In this concise exploration, we uncover the distinctive features of steel wire, underscoring its diverse applications and indispensable role across various industries.

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One of the hallmark traits of steel wire is its exceptional flexibility despite its formidable strength. This unique characteristic allows it to be seamlessly integrated into intricate designs and complex configurations, facilitating seamless installation and optimal performance in diverse environments.

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In the realm of construction, steel wire serves as a versatile building material, employed in an array of applications ranging from reinforcing concrete structures to suspending overhead cables and erecting fences. Its high tensile strength and malleability allow for precise shaping and positioning, enabling architects and engineers to realize their vision with confidence.

In the automotive industry, steel wire plays a crucial role in the fabrication of wire harnesses, springs, and other components essential for vehicle performance and safety. Its resilience and conductivity ensure reliable electrical connections, while its ability to withstand vibrations and mechanical stress enhances overall durability and longevity.

Furthermore, steel wire finds extensive utility in the manufacturing sector, where it is used in the production of industrial machinery, tools, and equipment. Its strength and versatility make it an indispensable resource for fabricating conveyor belts, lifting cables, and precision components, driving efficiency and productivity in manufacturing processes.

Beyond its industrial applications, steel wire serves as a creative medium for artists and craftsmen, who harness its inherent properties to sculpt intricate sculptures, jewelry, and decorative accents. Its ability to be shaped, bent, and formed with precision allows for the realization of intricate designs and imaginative creations.

In summary, steel wire emerges as a quintessential building block of modern engineering, embodying strength, flexibility, and durability in equal measure. From towering skyscrapers to intricate artworks, its versatility and reliability continue to shape the landscape of innovation and creativity, serving as a testament to human ingenuity and perseverance.

Key words:

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

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