12.7mm Low Relaxation PC Strand Ungalvanised Steel Stranded Wire

• Customization: Available
• Certification: ISO, CE
• Surface: Spiral
• Model NO.: UNGALVANISED STEEL STRANDED WIRE
• Technique: Drawn Wire
• Application: Rope, Manufacturing, Fencing, Construction
• Alloy or Not: Alloy
• Standard: ASTM
• Usage: Widely Used
• Certificate: ISO9001
• Model No: 12.7mm
• Shape: Coil
• Product Name: PC Strand
• Standard 2: ASTM
• MOQ: 25tons
• PCS Weight: 2.8-3.2tons/Coil
• Lead Time: 7-10days
• Transport Package: Sea Worth Package
• Specification: 12.7mm
• Trademark: ZK
• Origin: Hebei
• HS Code: 7312100000
• Production Capacity: 500000tons Each Year

Product Description

12.7mm Low Relaxation PC Strand for Construction Support High Strength 1860Mpa Manufacture's High Quality Steel Metal Product

Product Description

Low relaxation and high strength prestressed steel strands is ordinary bonded steel strands. There are commonly used specifications such as 9.53mm, 12.7mm, 15.2mm, 17.8mm, 21.6mm, etc.It is commonly used in highway bridges, railway bridges, urban interchanges, urban light rail, high-rise buildings, water conservancy and hydropower dams, port wharves, rock slope protection anchorage, basic reinforcement, tunnel roof anchor roof, prestressed grid, subway, large buildings and museums, warehouses, Tower, weight lifting, sliding film intermittent propulsion, bridge and tunnel jacking, large containers and ships, sleepers, replacement of bridge bearings, bridge and building reinforcement, reinforcement engineering, Anti-magnetic and anti-corrosion engineering (fiber anchorage), carbon fiber reinforcement, external prestressing engineering, stay cables, suspension cables, etc.

 

Product Parameters

 

Diameter	9.53mm/12.7mm/15.24mm/12.9mm/15.7mm/17.8mm
Standard	ASTM A416,GB/T5224,BS5896,EN10138
Material	82B
Tensile strength	1860Mpa
Place of Origin	China
Application	Construction, highway bridges, railway bridges
Features	High tensile. Low relaxation
Coil weight	2.8-3.2MTS
Processing services	HDPE Coating
Factory test	Nominal diameter, breaking force, elongation at rupture, tensile strength, stress relaxation property, relax value at 1000h

Standards:
The main standards in China are:

GB/T 5224-2023 [1] Steel strand for prestressed concrete (effective March 1, 2024)
GB/T 33363 - 2016 Hot-dip galvanized steel strand for prestressing
GB/T 21073-2007 Epoxy coated steel strand
JG/T 161-2016 Unbonded prestressed steel strand

Foreign standards include:
ASTM A416 / A416M - 18 7-wire steel strand for prestressed concrete,BS 5896: 2012,JIS G3536,EN 10138-3,AS/NZS 4672,NBR-7483

Details Show

Application fields: φ12.7 specification low relaxation prestressed steel strands are commonly used in exports, bridges, water conservancy, photovoltaics, wind energy, etc.

 

Application fields: φ15.2specification low relaxation prestressed steel strands are commonly used in bridges, buildings, highways, national highways, expressways, and other engineering projects.

 

Application fields: φ17.8 specification low relaxation prestressed steel strands are commonly used in airport construction, mining support, reservoirs, dams, and mountain slope support projects.

Detailed Photos

PRODUCT SPECIFICATION
 

PC STRAND GB/T5224-2014, FOR 1X7 PRESTRESSED CONCRETE STEEL STRAND

Structure	Nominal diameter	Tolerance on Diameter	Nominal Area of Section	Weight of strand	Tensile Strength, Rm	Minimum Breaking load,Fm	0,2% proof force , Fp0.2	Elongation Lo=500mm, Agt	Curvative of strand	Lay Length	The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than
	(mm)	(mm)	(mm^2)	(kg/1000m)	(N/mm^2)	KN	KN	(%)	mm	mm
1X7	9.5	+0.30 -0.15	54.8	430	1860	102	89.8	3.5	Max bow height = 25mm/ 1meter	(12-16)d	2.5
	9.5		54.8	430	1960	107	94.2
	11. 10		74.2	582	1860	138	121
	11. 10		74.2	582	1960	145	128
	12. 70	+0.40 -0.15	98.7	775	1860	184	162
	12. 70		98.7	775	1960	193	170
	15.2		140	1101	1860	260	229
	15.2		140	1101	1960	274	241
	15. 70		150	1178	1860	279	246
	17. 80		191	1500	1860	355	311

      
PC Strand ASTM A416/A416M:2012,  1X7 PRESTRESSED CONCRETE STEEL STRAND
 

Grade	Nominal diameter		Tolerance on Diameter	Nominal Area of Section		Weight of strand		Tensile Strength	Minimum Breaking load	Minimum load at 1% Extension	Elongation Lo=610mm	Lay Length	The Relaxation at 1000h (initial load to 70% of nominal max load ) (r/%) Not more than
	(mm)	(in.)	(mm)	(mm^2)	(in.^2)	(kg/ 1000m)	(lb/ 1000ft)	(N/mm^2)	(KN)	(KN)	(%)	mm
270 (1860)	9.53	3/8	+0.65,-0.15	54.8	0.085	432	290	1860	102.3	92.1	3.5	(12-16)d	2.5
	11.11	7/16	+0.65,-0.15	74.2	0.115	582	390	1860	137.9	124.1
	12.7	1/2	+0.65,-0.15	98.7	0.153	775	520	1860	183.7	165.3
	15.24	3/5	+0.65,-0.15	140	0.217	1102	740	1860	260.7	234.6
	17.78	7/10	+0.65,-0.15	189.7	0.294	1487	1000	1860	353.2	318

          
PC STRAND pr EN10138-3:2011, 1X7 PRESTRESSED CONCRETE STEEL STRAND
 

Steel Name	Steel Number	Diameter	Tensile strength	Cross-sectional area	Mass per meter	Permitted deviation on mass per meter	Characteristic value of maximum  force	Maximum value of maximum force	Characteristic value of 0.1% proof force	Min.Elong. Lo=500mm	Curvative of strand	Lay Length	Relaxation  1000h value no more than (initial load at 70% specified breaking load)
		D	Rm	Sn	M		Fm	Fm,max	Fp0.1
		mm	MPa	mm^2	g/m	%	kN	kN	kN	%	mm	mm	(%)
Y1860S7	1.1366	9.3	1860	52	406.1	±2	96.7	111	85.1	3.5	Max bow height = 25mm/ 1meter	(14-18)d	2.5
Y1860S7	1.1366	12.5	1860	93	726.3	±2	173	199	152
Y1860S7	1.1366	15.2	1860	139	1086	±2	259	298	228
Y1860S7	1.1366	15.7	1860	150	1172	±2	279	321	246
Y1960S7	1.1367	9.3	1960	52	406.1	±2	102	117	91
Y1960S7	1.1367	12.5	1960	93	726.3	±2	182	209	162
Y2060S7	1.1368	12.5	2060	93	726.3	±2	192	221	171
Y2060S7	1.1368	12.9	2060	100	781	±2	206	237	183
Y2060S7G*	1.1372	12.7	1860	112	874.7	±2	208	239	183
Y2060S7G*	1.1372	15.2	1860	165	1289	±2	307	353	270
Y1700S7G*	1.137	18	1700	223	1742	±2	379	436	334

 

(1) Classification by use
Prestressed steel strand, galvanized steel strand (for power) and stainless steel strand. Prestressed steel strand coated with anti-corrosion grease or paraffin and then wrapped with HDPE is called unbonded prestressed steel strand. Prestressed steel strand is also made of galvanized or galvanized aluminum alloy steel wire.
According to the number of steel wires in a steel strand, it can be divided into: 2-wire steel strand, 3-wire steel strand, 7-wire steel strand and 19-wire steel strand.
According to the surface morphology, it can be divided into: smooth steel strand (uncoated), notched steel strand, die-drawn steel strand (compact), galvanized prestressed steel strand, epoxy resin coated prestressed steel strand, etc.
It can also be classified according to diameter, strength level, standard or raw material.

The main characteristics of prestressed steel strand are high strength and good relaxation performance, and it is relatively straight when unfolded. The common tensile strength grade is 1860 MPa, and there are strength grades such as 1720, 1770, 1960, 2000, 2160, 2230, and 2360 MPa. The yield strength of this steel is also very high.

(2) Classification by material properties
Steel strand, aluminum-clad steel strand and stainless steel strand.

(3) Classification by structure
Prestressed steel strand can be divided into 7-wire, 2-wire, 3-wire and 19-wire structures according to the number of steel wires. The most commonly used is the 7-wire structure.
Galvanized steel strand and aluminum-clad steel strand for power are also divided into 2, 3, 7, 19, 37 and other structures according to the number of steel wires. The most commonly used is the 7-wire structure.

(4) Classification by surface coating layer
It can be divided into (smooth) steel strand, galvanized steel strand, epoxy-coated steel strand, aluminum-clad steel strand, copper-coated steel strand, plastic-coated steel strand, etc. 

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FAQ
1. Who are we?
We are based in Shandong, China, start from 2016, sell to South America(20.00%), Africa(20.00%), Southeast Asia(15.00%), Central America(10.00%), North America(5.00%), Oceania(5.00%), Mid East(5.00%), Eastern Asia(5.00%), Western Europe(5.00%), South Asia(5.00%), Domestic Market(5.00%). There are total about 50-60 people in our office.

2. How can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;

3. What can you buy from us?
Stainless Steel strand,Galvanized Steel strand, Carbon Steel strand. Wire Rod, Cable
4. What services can we provide?
Accepted Delivery Terms: FOB, CFR, CIF, EXW, FCA;
Accepted Payment Currency:USD, EUR, JPY, HKD, CAD;
Accepted Payment Type: T/T, L/C, MoneyGram, Credit Card, PayPal, Western Union, Cash;
Language Spoken:English, Chinese, Spanish, Japanese, Portuguese, German, Arabic, French, Russian, Korean, Hindi, Italian.