Pre-stressed concrete (PC) strand is a vital component in the construction industry, commonly used for reinforcing concrete structures such as bridges, buildings, and highways. Selecting the right PC strand is crucial to ensure the structural integrity, durability, and performance of concrete elements. Here is a comprehensive guide to help you choose the most suitable PC strand for your construction project:

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1. Understand PC Strand Properties:

PC strands are made from high-strength steel wires twisted together to form a helical strand. When embedded in concrete, PC strands provide tensile strength and help counteract the forces of compression. Key properties to consider include:

• Tensile Strength: The maximum stress a PC strand can withstand before breaking.

• Diameter: The diameter of the individual wires and the overall diameter of the PC strand.

• Elongation: The percentage increase in length of the PC strand under tension.

• Corrosion Resistance: The ability of the PC strand to resist corrosion, especially in harsh environments.

• Coating: Some PC strands are coated with epoxy or zinc to enhance corrosion resistance and bonding with concrete.

2. Determine Project Requirements:

Assess the specific requirements of your construction project to determine the type and specifications of PC strand needed. Consider factors such as:

• Design Load: The anticipated loads and stresses that the concrete structure will be subjected to.

• Environmental Conditions: The exposure to moisture, chemicals, temperature variations, and other environmental factors that may affect the performance of the PC strand.

• Concrete Mix Design: The type and strength of concrete being used, as well as any special requirements for pre-stressing.

• Construction Method: The installation method and requirements for anchoring, tensioning, and grouting the PC strand.

  
  

Three-Wire PC Strand

3. Choose the Right Grade:

PC strands are available in different grades, typically designated by their tensile strength. Common grades include 270 ksi, 250 ksi, and 270 ksi low-relaxation. Select the grade of PC strand that meets the design requirements of your project while considering factors such as cost and availability.

4. Consider Coating and Protection:

Depending on the environmental conditions and durability requirements of your project, you may choose PC strands with protective coatings or treatments. Epoxy-coated or galvanized PC strands offer enhanced corrosion resistance and longevity, particularly in aggressive environments such as coastal areas or industrial settings.

5. Verify Compliance with Standards:

Ensure that the PC strand manufacturer complies with relevant industry standards and specifications, such as ASTM A416/A416M for steel strand, ASTM A884/A884M for epoxy-coated steel strand, and ASTM A/AM for galvanized steel strand. Certification and testing reports from reputable third-party laboratories can provide assurance of quality and performance.

6. Evaluate Supplier Reputation:

Choose a reputable and experienced supplier or manufacturer of PC strand with a track record of delivering high-quality products and excellent customer service. Consider factors such as product availability, lead times, technical support, and after-sales service when selecting a supplier.

7. Review Cost and Budget:

Compare the cost of different PC strands while considering the overall budget and long-term cost implications of your construction project. Balance the upfront cost of the PC strand with factors such as durability, performance, and lifecycle costs to make an informed decision.

By following this guide and considering the key factors outlined above, you can choose the right PC strand that meets the specific requirements and performance criteria of your construction project, ensuring the structural integrity and longevity of concrete elements.

If you are looking for more details, kindly visit reinforcement lap length (table).

PC Strand :Understanding the Basics

PC Strand Basics

PC strand, also known as prestressed concrete strand, is a type of steel reinforcement used in construction. It is made by taking high-tensile steel wire and subjecting it to a process known as prestressing.

During the prestressing process, the steel wire is stretched to a specific tension and then anchored in place. This creates a compressive force within the concrete that counteracts any tensile forces that may occur during the life of the structure. As a result, PC strand is able to provide a higher level of strength and stability to concrete structures than traditional reinforcing methods.

PC strand is typically made from high-carbon steel and is available in a variety of sizes and grades to suit different construction needs. The wire is made by drawing it through a series of dies to achieve the desired size and shape.

PC Strand Uses

PC strand is used in a variety of construction projects, including bridges, buildings, and other infrastructure projects. It is used to reinforce concrete in pre-tensioned and post-tensioned applications. It is also used in the construction of parking garages, stadiums, and other large structures. It can also be used in the repair and retrofitting of existing structures.  One of the most common uses of PC strand is in pre-tensioned concrete. This method of prestressing involves stretching the PC strand before the concrete is poured, and then anchoring the strand in place. The concrete is then poured around the strand, creating a compressive force that counteracts any tensile forces that may occur during the life of the structure.

In addition to its strength and stability benefits, PC strand also offers other advantages over traditional reinforcing methods. For example, it requires less steel overall, which can reduce the overall weight of the structure and decrease the amount of steel needed to be produced. This can also help to reduce the overall cost of the project.

Another advantage of PC strand is that it can be easily cut and bent to fit into tight spaces, making it an ideal solution for structures with complex or irregular shapes. Additionally, its smooth surface can help to reduce the risk of concrete cracking and improve the durability of the structure.

Madison Steel Is Your Source

PC strand is made in many countries worldwide, with the United States being the largest producer. In the US, Madison Steel is one of the leading distributors of PC strand. They offer a wide range of products for different applications such as bridges, buildings, and other infrastructure projects.

Overall, PC strand is a versatile and reliable reinforcement option for concrete structures. Its ability to provide a high level of strength and stability makes it an ideal choice for a wide range of construction projects. With the help of logistic professionals like Madison Steel, Prestressed strand is widely available and can be easily incorporated into any construction project.  Call 404-343-, us at [ protected] or visit us online at madisonsteel.com/customize-my-solution/ for a quote.

PC Strand, PC Wire and bars for prestressed construction

PC Wire and PC Strand Expand Constructions' Life Span

In order to improve service performance of constructions, we can put prestressing force ahead. Structures or constructions receive prestressing force ahead can completely or partially bear the load caused by the tensile stress, therefore it can avoid structural damage or delay the structural damage time. Our company is one of the leading manufacturers of PC wire, PC strand and reinforcing steel bars. Our prestressing concrete wire strand with high bonding force, low relaxation and high corrosion resistance is your best choice. We have various kinds of PC wire and PC strand, and can supply products according to different diameters, different length, different surface treatment and different standards. All can be produced according to customers' special requirements.

Prestressing Concrete Single Wires and Stranded Wires

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 , JIS G, 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.

PC Wire / Strand Classifications

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: MPa, MPa, MPa, MPa and MPa.
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.

Prestressing steel wire / pc wire, functions differently compared with reinforcing steel (rebars):

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.

Newly Exported Products

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. or Chinese specifications [prestressed wire 7.00--WLR-P-GB/T/] or equivalent. 3 The nominal tensile strength of the steel should be (N/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 Kgs. 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 ( 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 /4/979 or BS /80
- Nominal tensile strength: N/mm2
- Yield limit : N/mm2
- Guaranteed Yield point: at 0.2 % of permanent elongation 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 Kg .
- Coil nominal inner diameter: - mm.
- Coil nominal outer diameter: about 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 &#; and EN 138/4/ OR equivalent
- Tensile strength : N/mm2.
- proof strength : 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 (-)mm
- Outer diameter of the coils approx. ( ) 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 mm, Round Smooth, Cold Drawn Acc. To En-2
Material grade:smooth wire st/ min.
Size:dia.9.4mmxmm 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. N/mm2 to min.N/mm2
Zinc coating: According to ASTM A475 Class A
Meets ASTM Specifications A475 or A363 or ASTM B498 or BS EN

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)

 Min.

Tensile stress (N/mm2) 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 /2 Wire--7-DE-relax 2
Explanation of designation (Basic specifications)
- Standard BS -section 2
- Diameter of Wire: 7 mm.
- Surface condition: smooth (E)
- Tensile strength: 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): MPa
- Elongation: 3.5%
- Ductility: 4 Times 20 mm. Bending
Packing: Mill's Standard with Coil Weight of - Kg.

Indented PC Wire, Steel
- Materiral :
Prestressed concrete pc wire steel dia 7mm.
- Standard ACC BS &#; and EN 138/4/ OR equivalent
- Tensile strength : N/mm2.
- proof strength : 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 (-)mm
- Outer diameter of the coils approx. ( ) 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.

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