Low relaxation PC stranded wire is the idea that pre-stress steel strands buried in concrete will gradually lose the applied stress in a mathematically proportional manner as time goes on. A high-grade, low-relaxation, 7-strand steel cord known as pre-stressed concrete strand (PC strand) is used to reinforce and strengthen pre-stressed concrete structures.
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For its exceptional quality and dependability, Low Relaxation PC Strand is well known. The most common materials used to introduce prestressed in a Pre-Stressed Concrete (PSC) structure are Prestressed Concrete Wire and Strand (PC) strands.
Uses/Applications:
When prestressing concrete for the construction of bridge beams, shopping centres, parking garages, high-rise buildings, highways, roads, and other different types of constructions, steel strands known as LRPC (Low Relaxation Pre-Stressed Concrete) are utilized.
When pre-stressing concrete to build different sorts of constructions, low relaxation PC strands (LRPC) are used ( Road, River, Railway Bridges and Flyovers, Atomic reactor domes, Slabs, Silos, Hangers, Aqueducts, High rise buildings, Viaducts and Railway sleepers).
A high-grade, low-relaxation, 7-strand steel cord known as pre-stressed concrete strand (PC strand) is used to reinforce and strengthen pre-stressed concrete structures. This strand is made of high-carbon steel with a high tensile strength since it is used in essential applications, and it is produced to the highest standards to guarantee durability.
Download PDF: Manufacturing Business of Low Relaxation Pre Stressed Concrete Steel Strand LRPC Most Profitable and High Demandable Business of Low Relaxation Pre Stressed Concrete Steel Strand LRPC
Manufacturing Process:
The creation of this concrete mixture is the first step in the LRPC production process. After the concrete has been made, it is poured into a mould to set. After that, the strand is put inside the mould to cure. Hydraulic jacks are utilized to compress the strands after the curing process.
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Depending on the project they are being used for, these strands are often compressed at various amounts. For instance, only 200 tonnes per metre of pressure may be used for shorter spans or lighter loads, whereas 600 tonnes per metre of pressure may be applied for longer spans or heavier loads.
Benefits Of Starting Business Of Low Relaxation Pre-Stressed Concrete Steel Strand (LRPC):
Among the advantages of LRPC business are:
1. Higher temperatures result in better performance.
2. Reduces the cost of the project by using fewer anchorages, sheathings, wedges, and workers.
3. Reduces the amount of concrete used because the structural elements are smaller.
4. Utilize thermo-mechanical processing to do away with the need for additional post-straightening treatment.
5. Less loss of relaxation.
6. Increased breaking loads
7. Greater resilience to corrosion and fatigue.
8. Increased proof loads.
9. Increased resilience to corrosion and fatigue
Market Size in India:
During the projected period of 2019–2024, the pre-stressed concrete steel strand market is anticipated to expand at a CAGR of 5.5%. Pre-stressed concrete steel strand is anticipated to have the greatest market in the Asia-Pacific region, followed by North America and Europe.
In the coming years, a sizable increase in demand for low relaxation pre-stressed concrete steel strand is anticipated in India. This is a result of the growing need for infrastructure development as well as the want for quicker and more effective construction techniques. Pre-stressed concrete steel strand is in high demand in India due to the country's burgeoning building market.
Global Market Outlook:
During the forecast period, the global market for low relaxation pre-stressed concrete steel strand (LRPC) is anticipated to expand (2019-2024). The largest market for LRPC is anticipated to be in the Asia-Pacific region, followed by North America and Europe.
The Asia-Pacific region's expanding building industry is the primary cause of the rising demand for LRPC there. This prosperity has also been fueled by the region's access to a skilled labour force. During this time, it is anticipated that stronger safety requirements in North America and Europe will increase demand for LRPC.
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Everbright, a reliable PC Strand supplier ( manufacturer / exporter) of China.
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Everbright presents an engineering wire product of high quality, durability and service ability in building materials for more than 20 years. We provide economic pc wire products complying with international standards.
We supply and distribute a wide range of steel wires products to numerous construction projects in USA, Vietnam, Egypt, and many satisfied customers all over the world.
Our Customers
Mainly in field of Construction, Building Materials, Steel plates & Rebars, Prestressing wire, Railways, Bridges, Transportation and other engineering.
Our Benefits
We supply quality products at competitive prices.
ISO 9001 certified manufacturers of Structural steel PC Wire Products.
PC STRAND is mainly used for concrete structure, such as railway and highway, overhead crane construction, multi-floor industrial building and etc. Products have been widely applied to the engineering construction of large scale of railroads, highways, bridges.
The number of steel wires in PC strands: 2 wire, 3 wire, 7 wire, 12 wire, 17 wire, 19 wire and more.
Stranded wire types according to the surface shapes: smooth plain steel strand, indented steel strand, Helix strand, compact steel strand (compact), Epoxy coated PC Strand (7 wires individually coated), etc.
It can also be categorized by wire diameter, or intensity level, or by standard.
Common sizes: Diameter 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm indented PC wire for metal building materials.
Wire Shapes: Plain wire, Spiral ribbed steel wire
Standard: GB/T5223, ASTMA421, BS5896, JISG3536, ISO6934, EN10138
Type of Surface: Helix(screw / spiral ), unbonded, coated and uncoated plain steel, indented, hot dipped galvanized.
Coil weight: 1-3 tons
Elongation: 3.5%
Tensile Strength:1470Mpa-1860Mpa
Function:
Low relaxation pc wire is used for prestressed steel structure, prestressed and post-tensioning, in large, medium and small sizes.
Structures:
7 wire, 12 wire, 17 wire, 19 wire and more.
7 wire strand and 19 wire strand construction:
Construction: 1x7 wire ( Left figure on the above photo)
Tensile strength: 1570, 1770, 1960 N/mm2
Diameter: 0.6-6.0 mm
Lay direction: S or Z
Construction: 1x19 wire ( Right figure on above photo)
Tensile strength: 1570, 1770, 1960 N/mm2
Diameter: 1-15.0 mm
Lay direction: S or Z
We supply and delivery the below mentioned popular specifications to different countries and we are looking forward to working with you upon your enquiry.
12.70 mm Unbonded PC strand ( 7 wires), for railway sleepers construction project
1x7-high tensile pc strand wire 1/2" ( 12.70 mm), high tension 1570Mpa, spiral ribbed steel wire,
standard: ASTM A416, for concrete construction
Indented PC Wire Strand 5mm
Low relaxation pc steel strand, grade 270, in each coil minimum 3000 Kgs.
15.24mm 7-Wire PC STRAND WIRE, 1860Mpa, for POST Tensioning
Uncoated PC Wire 15.24mm, for the post tensioning slabs, tanks and other special engineering structures, for Karachi Pakistan
High Tensile Spiral PC Wire
10.7mm PC Wire, for Vietnam construction projects in concrete reinforcing
Epoxy coated Steel Strand
Blue coated pc steel strand, 7 wires individually coated
Pre-stressed Concrete Stranded Wire for Concrete Flooring Construction Projects in Egypt
Standard BS 5896 PC Wire,
No of wires / strand 7,
Diameter 9.3 mm
Area = 52 mm2,
Strength = 1770 N/mm2,
Relaxation = 2.5% at 70% breaking load after 1000h
Indent = 0.09 mm +- 0.03 mm euro norm pattern
Delivery = CIF Alexandria
For pre-stressing in concrete reinforcement construction project
Vietnam Market
Popular sizes
PC strand / PC steel bar / Pc wire
Spiral pc wire: 5mm, 6mm, 7.1mm, 9.3mm, 10.7mm, 15.24mm
PC Strand for USA Market
Sizes:
15.7mm Low Relaxation Pc strand - SET.4006 for Nigeria Market
Following specifications:
Prestressed Strand 7/15.2 mm Low relaxation
with galvanized Duct 72mm Ø, bearing plate, anchors and wedges.
7 wires PC strand to Iran and UAE and Oman Market
For Iron customers supplying of foundry and metallurgical materials
Sizes:
Uncoated 7 wires PC strands with following sizes ( ½ and 0.6 inches )
Grades : low relaxation according to ASTM- 416 , Grade 270 ( 1860 MPa).
200 hr. & 1000 hr. relaxation tested.
UAE Market:
PC Steel Strand, size 15.24 mm 3 wire grade 270k
PC Steel Strand, size 15.24 mm 4 wire grade 270k
PC Steel Strand, size 15.24 mm 5 wire grade 270k
PC Steel Strand, size 15.24 mm 7 wire grade
Dubai Market Sizes:
7 wire low relaxation pc wire strand 15.24 mm
7 wire low relaxation pc wire strand 12.97 mm
High Tensile PC Strand, to Bangladesh Market
Popular Types
Rwanda Market
Size: PC Strand 12.7 mm diameter
South American Market
Sizes:
12.7 mm strands/ 7 wire (ASTM A722/A416)
PC Strand to Turkey Market
Type 1:
12.70mm PC Strand, ASTM A 416/A 416M Grade 270 Low Relaxation
to Istanbul
Type 2:
Pc strand 1x7 ply 3mm
Low Relaxation PC Strand
KSA / Kingdom of Saudi Arabia Market:
12.7mm PC Strands
9.53mm PC Strands
15.24mm PC Strands
Standard ASTM A416,
Grade 270
Prestressing Strand Wires for Pakistan Market
PC Strand BS 5896 , 1860 mpa , low relaxation , 7-wired:
PC Strand Wire ASTM A416 15.24mm 270Ksi
1x7 15.24mm, 9.3/9.53mm
FOB & CFR Karachi Pakistan
Grade: ASTM A416 / BS 5896, 1860MPa / 270Ksi
MTC and 3rd party test certificate provided
POST TENSIONING WIRE SEPCS: (15.24mm MTC must cover all below parameters)
Tendons conforming to ASTM A-416-96; Grade-270
Freyssinet C range system.
Nominal diameter per strand: 15.24 mm (0.6’’) ;
7 strands Wire, Cross-sectional area of tendons: A=980mm²
Nominal steel area per strand 140 mm2.
Nominal tensile strength 1860 N/mm2.
Nominal breaking strength of one strand 260.7 kN
Nominal yielding stress 1675 N/mm2
Nominal yielding force of one strand 234.6 kN
Maximum relaxation at 1000 hours under 0.7pk ≤ 2.5 %
Coefficient of friction μ 0.24 (rad-1)
Coefficient k 0.007 (rad/m)
PC Strand BS 5896 to
Market of Kingdom of Bahrain:
PC Strand BS 5896 , 1860 mpa, low relaxation ,
7-wired:
Size: 9.3mm
Size: 12.5mm
Stranded Wire for Egypt Market
Commodities:
Our Australia customer who provides concrete slab solutions in Australia, United Kingdom and United Arab Emirates. Also a leading provider of Specialist Engineering and Construction services with a core focus on the design and delivery of Post Tensioning Systems and Structural solutions.
·Material: PC Strand
·Diameter: 12.7mm
·Type: Ungalvanized 7 Wire PC Strand Relaxation
·Grade: 270K Grade (1860MPa), Left Hand Lay, with soluble oil as per ASTM A416 specification
Australia:
15.2 mm diameter strand; 1x7 PC Strand
12.7 reinforcing steel PC strand
details to St Helens Park NSW 2560 Australia.
Our customer is the leader of Post-Tension company in Thailand
who is expanding market to South East Asia country:
PC Strand 12.7mm Low Relaxation, specifications as below:
Standard Nominal tensile strength N/mm2 Nominal diameter mm. Nominal area mm2 Nominal weight kg/1000m. Minimum breaking strength kN. Relaxation 1000 hrs. % TIS 420-2510 & ISO 6934-4 : 1991 1860 12.7 98.7 774 184 2.5* 15.2 139 1101 259 ASTM A416-96 Grade 271(1860) 12.7 98.7 775 183.7 2.5* 15.2 140 1102 260.7Pc Steel Strand
India customers in marketing and distribution of prestressed concrete strands/wires and other prestressed concrete products in India:
PC Steel Strand Size 15.24 mm 7 Wire Grade 270k
PC Strand 15.4mm according to ASTM A416
PC Strands for DOHA
PC Strands in sizes 15.2mm & 15.7mm. The specifications as below:
Pre-stressing of strands shall be 7-wire super low relaxation strand class 2 according to EN 10138/ BS 5896-3.
Uncoated super low relaxation seven-wire high tensile strand of 15.2mm & 15.7 mm dia.
Properties:
Area 150mm sq
Nominal Tensile Strength 1860 N/mm sq
Nominal Yield Strength 1640 N/mm sq
The pre-stressing force at stressing to be 194 KN per strand.
12.9 and 15.7 Prestressed Concrete Strand Wire, for Singapore Market
Prestressed Concrete Strand Wire:
12.9-1x7 PC Wire, BS5896:1980 Standard
15.7-1x7 PC Wire, BS5896:1980 Standard
For construction of multi warehouse and industrial factories in Singapore
Central America Market
UNBONED WIRE PC STRAND
Standard ASMT A416/A416M-2002
Grade 1860Mpa
Size 1x7 size - 12.7 mm
Color Blue
Ship to Panama
Albania Market
Albania customers in construction import steel strands as following:
Strand diameter mm: 15,7
Norm: prEN 10138
Strand type: Super
Nominal diameter ( identification ): T15S
Nominal area mm: 2 150,00
fptk N/mm: 2 1.860
fp(1)k N/mm2: 1.670
Mass gr./m: 1.172
Tensione 1% di allungamento KN: 251
Breaking load ( Ptk ) KN: 279
Elastic limit 0,1% ( Pt0,1k ) KN: 248
Relaxation after 1.000 h.0,7 fpt %: 2,5
Relaxation after 1.000 h.0,8 fpt %: 4,5
Elastic modulus KN/mm2: 196 +/- 10
External diameter of strand greased and coated mm: 18,50
Weight of grease for metre of strand g/m: 78
Weight of strand greased and coated g/m: 1.290
Panama Market
PC Strand Unbonded ½”
PC steel strand size: 15.24 mm
Malaysia Market
We supply and distribute
PC Strand to Malaysia customers, with the below mentioned sizes
Product : Low Relaxation, PC Strand
FOB CIF Port Klang, Malaysia
Size:
9.53mm
12.7mm
15.24mm
P.C.Strand 12 MM for Post-Tension Contracted work located in Middle East
P.C.Strand 12 MM
With DCLD Approval
Specifications :
Size- 12.7 mm
Spec-ASTM-A416M-12a
Grade: 1860 (270k)
PC Wire for concrete poles for electric transmission and for telecommunications
PCWire 7mm under ASTM A421 Standard
PC Strand 12.70mm under ASTM A416 Standard
Pc strand 15,7 mm greased in PE, Romania Market
Pc strand 15,7 mm R=1860 N/mm2, greased and sheathed
To
Constanta - Romania.
Everbright Wire Products: PC Strand, PC Wire, Wire Rope 6x37, Binding Wire, Wire Ropes, Bead Wire, Nail Wire, Galvanize Wire, Razor Wire, Fencing Wires, Spring Wires, etc.
Kindly tell us what you are looking for, we will provide you with final and best price ASAP, and we will send you our catalog, certificates and samples.
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