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Pre-stressed concrete wire (PC wire) is a high-grade, low-unwinding steel wire that is essentially used to counter the low-pressure characteristics innate in concrete. It is produced using high-carbon steel that is high in tensile strength, made to demanding standards in light of its normal use in basic applications like extensions and different constructions.
The prestressed concrete wire can be drawn to an assortment of breadths and made to an assortment of stress load specifications. At the point when installed in concrete, it very well might be uncoated, however, for applications that open it to the elements, it tends to be electrified or epoxy-covered, like rebar. Additionally, contingent upon the application, PC wire can have an external completion that is smooth, ribbed, or scratched.
Depending on the surface morphology, there are twisting rib (winding ribbed or helix scored) prestressed steel wire, light round prestressed steel wire, or scratches (indented) prestressed steel wire, the pressing factor wave (pleated) prestressed steel wire, etc.
Depending on the force level, there are 1470MPa, 1570MPa, 1670MPa, 1770MPa, and 1860MPa PC wires.
Depending on the width, there are PC wires available from 4mm to 12 mm width and more.
Depending on the surface covering, the high tractable PC wires can be available in electrified prestressed aluminum conductor steel wire, prestressed epoxy covered steel wire, and no covering prestressed steel wire.
Depending on the treatment interaction, there are low unwinding prestressed steel wire and cool drawn prestressing steel wire (no leeway execution prerequisites).
The essential utilization of the PC wire is in the development of buildings and bridges. The wires are additionally utilized in the development of stadiums, roads, railway sleepers, tunnels, and others.
Be that as it may, the segmental design utilized in bridge development is one of the significant applications of the item. Over the estimated time frame, the bridges section is probably going to command the market. The fragment is relied upon to represent 48.6% of the worldwide market by 2025.
The non-industrial nations like Malaysia, India, South Africa, and others are putting resources into different extension tasks to associate the remote regions of the country to metropolitan regions. According to the Indian authorities, the country needs a venture of $646 billion over the course of the following five years. The majority of this venture is expected to be dissipated in the roads, metropolitan infrastructure area, and power.
With the developing demand for infrastructure in agricultural nations, the market is probably going to notice a steady interest from the scaffold portion over the estimated time frame.
The building fragment was represented 31.7% in 2016 of the worldwide market. The rising reputation of skyscraper development is probably going to drive industry development over the figure time frame.
The developing real estate sector in the creating economies is probably going to be the critical impetus for section development. Besides, expanding urbanization in the developing economies is probably going to produce a solid demand for the building section.
The other fragment incorporates arena, roadwork, rail route sleepers, tunnels, and others. The section is relied upon to decay to 19.7% in 2025. The low interest from others section is because of difficulties, for example, feasibility restraint, infrastructure funding hole, and others.
The developing economies are the essential wellspring of new infrastructure advancement. Since these are developing economies, the test of monetary funding frequently delays or defers the task. Notwithstanding, it is expected that with the joint company of created nations the funding hole can be survived.
Kinwey offers Prestressed Concrete Wires (pc wire) in mainly two types: Mono pc wire and Multi-wire strand.
PC steel wires are widely used in concrete construction industry for pre-stressed steel structures: large-span bridges ( stay cable system), overhead crane beam, cement poles, coal mines rock-soil anchoring project, multi-storey frameworks (slab and hollow floors), subway, railway sleepers, dams, shell safety of nuclear power stations, high-rise buildings (television tower, water towers, concrete silo, sewage treatment, hydropower project, stadiums) and etc.
Quality: ASTM A-416, BS 5896, JIS G3536, the standards and cutomized specifications.
Common wire materials for production: High tensile wires, plain or galvanized.
The process involves the continuous heating and stretching of a cold drawn high-carbon steel wire to produce a finished product with a much improved yield stress and greatly reduced load relaxation.
Prestressing concrete steel wire can be divided according to wire diameter, the intensity level, the surface coating or cross-section:
1. According to diameter, PC steel wire can be categorized as: 4mm, 4.8mm, 5.0mm, 5.1mm, 6.0mm, 6.35mm, 7.0mm, 7.8mm, 8.0mm, 9.0mm, 10.0mm, 11mm, 12mm and so on.
2. According to tensile strength, pc wire can be classified as: 1470MPa, 1570MPa, 1670MPa, 1770MPa and 1860MPa.
3. According to the surface coating, pc wire can be classified as: uncoated prestressed steel wire, prestressed epoxy coated steel wire and galvanized prestressed steel wire.
4. According to forms of the surface, it can be classified as: Round plain wires, spiral ribbed (spiral ribbed or helix grooved) steel wires, crimped wires, slotted (indented) wires, and so on.
5. According to wire treatment process, pc wire can be categorized as follows: cold-drawn pc wire and low relaxation pc wire.
6. According to wires applied, pc wire can be classified as single individual pc wire and helically stranded wire ( pc strand).
7. According to applications, pc wire / strand can be divided into:
Un-bonded strand: zinc coated, grease filled; uv stabilized polymer sheath, for post tensioning
Bonded strand, retardant, galvanized bright, with PE shielding, for stable cable, suspension wire cable for bridge construction
8. According to structures, stranded wire can be classified into 2 wire strand, 3 wire strand or 7 wire strand mostly.
Post-tensioning is very useful to defeat the natural weakness of concrete in tension and to optimize its strength in compression. In concrete structures, using high-tensile steel wire / strand placed in the element prior to casting will:
1, Reduces occurrence of cracks .
2, Increase in durability.
3, Less deformations (improved serviceability).
4, Increase in shear capacity.
Since concrete is weak in tension, the reinforcing steel bar / rebar is used inside concrete for strengthening and reinforcing the tensile strength of concrete. Reinforcing steel bars are used to absorbs the tensile, shear, and sometimes the compressive stresses in a concrete structure.
PC Wire, PC Strand Wire, PC Steel Wire For Vietnam,
PC Steel productions as below:
Comm : PC STEEL BAR/PC WIRE
Size: Φ7.1 , Φ9.0, Φ6 , Φ5
PC Wire 0.5" size for Bridge Project. in Lahore (Pakistan).
High Tensile Steel Wire (low Relaxation Prestressed Concrete Wire ) For Amman – Jordan
Bright plain high tensile steel wire of 7mm diameter as specified :
1 Steel required has to be bright plain-high tensile steel wire7mm diameter and will be used in manufacturing prestressed concrete poles for medium voltage networks. 2 The steel should conform in all respects with the requirements of the latest edition of BS.5896 or Chinese specifications [prestressed wire 7.00-1570-WLR-P-GB/T5223/2002] or equivalent. 3 The nominal tensile strength of the steel should be (1570N/mm2). 4 The steel should be of Low relaxation “quality and the wire is pre-straightened and will run out straight form the coil when used at site. 5 No joint is allowed in the wire which should be one piece in the coil. 6 Steel shouldbesuppliedinlargediametercoilsof1.8 -2.4m. 7 The weight of Each coil should be approximately 1000Kgs. 8 The packing o f each coil ensures good protection to the steel during loading, shipping, unloading, transportation, and storing at the site of the purchaser. For that, every coil is tightly wrapped by proper and secure seaworthy packing. 9 Each coil has a separate label made of steel sheet with a reason able size. 10 Mechanical and other relevant tests should be carried out on sufficient number of samples from the materials. Our engineer will operate these tests in the laboratory. The purchaser has the right of testing some samples in a 3rd party (for example SGS) laboratory at the manufacturer Expense.
Uncoated 7 Wires PC Strands With Following Sizes ( ½ And 0.6 Inches ) For In Uae And Oman.
Grades : low relaxation according to ASTM- 416 , Grade 270 ( 1860 MPa).
7 Wire PC Strand, 15.24mm (ASTM A416 Gr 270 Low Relaxation) , 2.0ton – 3.5tons per coil
PC indentened Wire for Damascus
Straightened indented cold drawn pre-stressed steel wires of nominal diameter 7 mm.
according to the EN 10138/4/979 or BS 5896/80
- Nominal tensile strength: 1570 N/mm2
- Yield limit : 1420 N/mm2
- Guaranteed Yield point: at 0.2 % of permanent elongation 1380 N/mm2.
- Deflections : Max. 12 mm in 1 meter long.
- Diameter tolerance : 7 mm ± 0.05 mm
- Relaxation: Class 1 or Class 2
- Weight of Coil : manufacturer Choice , preferable less than 1000 Kg .
- Coil nominal inner diameter: 1800-2000 mm.
- Coil nominal outer diameter: about 2200 mm.
- Indentation depth: 0.15 mm± 0.05 mm , three indented faces with angle 45° , pitch 8 mm.
PC still wire for prestressed concrete railways sleepers, diameter 3 mm for Damascus
Specifications of the material (tensile strength; surface; coils weight, standard).
- Materiral : Prestressed concrete pc wire steel dia 7mm.
- Standard ACC BS 5896 – 1980 and EN 138/4/1979 OR equivalent
- Tensile strength :1570 N/mm2.
- proof strength :1420 N/ MM2.
- Diameter :7 mm.
- Relaxation :class1.
- deviation :max 12mm for L1m.
- the Surface:
indented pc wire steel.
indent depth 0.15 mm +- 0.5.
indented on three faces at a 45 degree angle.
- Coils weight: (500 , 700) kg.
- Interior diameter (1800-2000)mm
- Outer diameter of the coils approx. (2200 ) mm.
Standard: all Production (pc wire), control and testing according to above standard.
- inspection :
will be by a neutral third party, through a competent inspection company selected by payer.
- Diameters :7 mm. - Tolerance of diameter 7mm +-0.5
- Quantity: 300 ton.
Delivery syria port( lattakia)
PC Plain Cold Drawn Wire 4 mm Diameter For Germany
PC wire strand 4mm
PC wire strand 5mm
Spiral Steel Wire-OD2.7mm for Malaysia
NTW Wire - Non Tensions Wire-OD6mm
Prestressed PC Wire- 4 side indented oval shave
Size: OD 5mm
OD 7mm
Supply Prestressing Steel Wire 140/160 Dia 9.4mm In Length 2337mm, Round Smooth, Cold Drawn Acc. To En10138-2
Material grade:smooth wire st1460/1620 min.
Size:dia.9.4mmx2337mm length
Galvanized Steel Strand
The vertical hot-dip galvanized technology ensures coating thickness.
Common structure: 7 strands / 19 strands
Application: for ACSR, stay wire, Guy wire, barrier cable, guardrail strand, overhead earth wire
Material: high carbon steel
Galvanized steel wire size: Φ1.44mm-4.770mm
Strand size:7×（1.44-4.2 mm）;19×（1.44-3.5mm）
Tensile strength: different Grade from min.1470 N/mm2 to min.1960N/mm2
Zinc coating: According to ASTM A475 Class A
Meets ASTM Specifications A475 or A363 or ASTM B498 or BS EN 50189
PC Steel Wire S Grooved, Supply to Iran
Name
pc steel wire Designation Diameter 4mm 4.8mm 5mm 6mm 7mm Grade ASTM A 421 Nominal cross section area (mm2) 18.7 Diameter Tolerance 0.00mm / ± 0.05mm Yield stress (N/mm2) 1400
If you are looking for more details, kindly visit 7.0mm PC Wire.
Min.
Tensile stress (N/mm2) 1670 Min. Elongation (%) 3.5 Min. Relaxation (%) 2.0 Max. Groove number 4 Groove direction S
Cold Drawn PC Wire in Coils
Material: Prime Alloy Steel Wire for in coils for prestressing of concrete
Technical Specifications:
- Designation as per British Standard BS 5896/2 Wire-1670-7-DE-relax 2
Explanation of designation (Basic specifications)
- Standard BS 5896-section 2
- Diameter of Wire: 7 mm.
- Surface condition: smooth (E)
- Tensile strength: 1670 MPa
- Relaxation : class 2 (1% @ 60% initial load, 2.5% @ 70% initial load and 4.5% @ 80% initial load)
- Coil outer diameter: 2.3 m. max.
- Yield stress (0.1 proof Stress): 1390 MPa
- Elongation: 3.5%
- Ductility: 4 Times 20 mm. Bending
Packing: Mill's Standard with Coil Weight of 1700-2400 Kg.
Indented PC Wire, Steel
- Materiral :
Prestressed concrete pc wire steel dia 7mm.
- Standard ACC BS 5896 – 1980 and EN 138/4/1979 OR equivalent
- Tensile strength :1570 N/mm2.
- proof strength :1420 N/ MM2.
- Diameter :7 mm.
- Relaxation :class1.
- deviation :max 12mm for L1m.
-the Surface:
indented pc wire steel.
indent depth 0.15 mm +- 0.5.
indented on three faces at a 45 degree angle.
- Coils weight: (500 , 700) kg.
- Interior diameter (1800-2000)mm
- Outer diameter of the coils approx. (2200 ) mm .
- Diameters :7 mm. - Tolerance of diameter 7mm +-0.5
Delivery to Syria
PC Bars
Steel Bars for manufacturing of PC Poles and Spun Piles.
PC Strand, or prestressed concrete steel strand, is a twisted steel cable composed of 2, 3, 7 or 19 high strength steel wires and is stress-relieved (stabilized) for prestressed concrete or similar purposes.
Classification
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PC strand is classified according to the number of steel wires in a strand: 2 wire strand, 3 wire strand, 7 wire steel strand[1] and 19 wire steel strand. It can be classified according to the surface morphology and can be divided into: smooth steel strand, scoring strand, mold pulling strand (compact), coated epoxy resin steel strand. They can also be classified by diameter, or intensity level, or standard.
Specifications
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In the description and list of the table we often see, there are 15-7Φ5, 12-7Φ5, 9-7Φ5 and other specifications of the prestressed steel strand. To 15-7Φ5, for example, 5 said a single diameter 5.0mm of steel, 7Φ5 said seven of the steel wire to form a strand, and 15 that the diameter of each strand of 15mm, the total meaning is "one The beam consists of 7 strands of diameter 15 mm (each having a total diameter of about 15.24 mm, a dimensional deviation +0.40 -0.20; a diameter of about 5.0 mm per filament). The general sectional area is calculated according to 140mm ^ 2. The theoretical breaking value is 140 * 1860 = 260.4 kN, which can withstand the tension of 156.24-169.26 kN according to the prestressing standard of 60% -65%.
Materials
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Using high-carbon steel wire rod, after surface treatment it is cold drawn into steel wire, and then the strand structure will be a number of steel wires stranded into shares. Next the elimination of stress by way of a stabilization process. In order to extend durability, the wire can have metal or non-metallic coatings, such as galvanized, or epoxy resin coating. In order to increase the bond strength with the concrete, the surface can have nicks and so on. The prestressed strands of the mold are twisted to form a mold compression process, the structure is more compact, and the surface layer is more suitable for anchoring. Production of unbonded prestressed steel strand (unbonded steel strand) using ordinary prestressed steel wire, coated with oil or paraffin after the packaging into high-density polyethylene (HDPE) bags.
Features
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The main characteristic of the prestressed steel strand is high strength and relaxation performance is good, the other when the more straight. Common tensile strength levels of 1860 MPa, as well as 1720, 1770, 1960, 2000, 2100 MPa and the like intensity levels. The yield strength of this steel is also higher.
Application
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In most of the post-tensioned and pre-tensioned prestressed project, smooth steel strand is the most widely used prestressed steel. Stranded strand is mainly used to enhance the project, but also for nuclear power and the like works. Galvanized steel strand commonly used in the bridge of the tie rod, cable and external prestressing works. Epoxy coated steel stranded wire is similar to galvanized prestressed steel wire.
Standards
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Countries have standards for prestressed strand, such as: China Standard GB / T 5224, American Standard ASTM A416, British standard BS 5896 and the Japanese standard JIS G3536, the Australian standard AS / NZS 4672, Brazilian standard NBR-7483[2]
References
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