High Carbon Steel Strand Wires For Prestressed Concrete - China

Prestressed Steel Strand - High Tensile & Low Relaxation

High carbon prestressed steel strand is twisted by 2, 3, 7 or 19 pieces of high tensile steel wires.

After surface treatment, high carbon steel wire rods are cold drawn to steel wires, then according to the strand structure, twisting a certain number of steel wires into a strand, next is the stabilization process of eliminating stress.

In order to extend the durability, the wires would have metallic or non- metallic coating like galvanization, and in order to increase the bond strength with concrete, the wires surface may have nicks.

High carbon steel strands are mainly used for prestressed concrete structure.

Classification:

According the number of steel wires in a steel strand, it can be divided into two- wire strand, three- wire strand, seven- wire strand and nineteen- wire strand.

According to the surface morphology of the strand, it can be divided into smooth steel strand, nick steel strand, compacted steel strand and galvanized steel strand and so on.

Three- wire high carbon steel strands with black surface and their cross- section in the blue background show their structure.

High carbon three- wire steel strand has stable structure and mainly used for bridges.

An end high carbon steel strand and its cross- sectional picture show it was twisted evenly by 7 pieces of high carbon steel wires.

High carbon steel strand for prestressed concrete have high tensile strength and low relaxation.

Specifications:

Material: 77B, 82B.

Diameter range: 1.2mm - 36mm.

Standards: GB/ T 5224, ASTM A416, BS 5896, JIS G3536, AS/ NZS 4672, NBR- 7483.

Surface: galvanized, un- galvanized, coated PVC/ PE/ NYLOY, nicked, smooth.

Style: 1×2, 1×3, 1×7 and 1×19.

Packing: Baling strip strapped, inner plastic cover, outer paper- plastic packing cloth.

Mechanics properties of steel strand - GB/ T 5224

Structure Nominal Diameter ( mm) Tolerance ( mm) Cross- sectional area ( S/ mm2) Theoretical weight per 1000m ( Kg/ 1000m) Tensile strength no small than ( Mpa) Yield strength no small than ( Mpa) Elongation no small than ( % ） 1000h Relaxation Rate not more than ( % )

1×2 8.00 ＋ 0.25 － 0.10 25.1 197 1470 1320 3.5 2.5

10.00 39.3 309 1570 1410

12.00 56.5 444 1720 1550

1×3 10.80 ＋ 0.20 － 0.10 58.9 462 1860 1670

12.90 84.8 666 1960 1760

1×7 9.50 ＋ 0.40 － 0.20 54.8 430 1720 1550

11.10 74.2 582 1860 1670

12.70 98.7 775 1960 1760

15.20 140 1101 1470 1320

1570 1410

1670 1500

1720 1550

1860 1670

1960 1760

17.80 191 1500 1720 1550

Mechanics properties of steel strand - ASTM A416

Grade Nominal diameter Tolerance ( mm) Cross- sectional area ( mm2) Theoretical weight per 1000m ( Kg/ 1000m) The minimum breaking force The minimum load when elongate 1% Elongation ( % ) 1000h Relaxation Rate not more than ( % )

In mm

250 0.375 9.53 ＋ 0.40 － 0.40 51.61 405 89.0 80.1 3.5 2.5

0.438 11.11 69.68 548 120.1 108.1

0.500 12.70 92.90 730 160.1 144.1

0.600 15.24 139.35 1094 240.2 216.1

270 0.375 9.53 ＋ 0.65 － 0.15 54.84 432 102.3 92.1

0.438 11.11 74.19 582 137.9 124.1

0.500 12.70 98.71 775 183.7 165.1

0.600 15.24 140.00 1102 260.7 234.6

Features:

High corrosion resistance with zinc coating.

High tensile strength.

Low relaxation.

High abrasion resistance.

Firm connection with concrete.

Good performance at elevated temperature.

High fatigue resistance.

Applications:

In the most post- tensioned prestressing and pre- tensioned prestressing projects, smooth steel strand is the most widely used prestressed steel.

Compacted steel strand is mainly used for hoisting operation and nuclear power project.

Galvanized steel strand is often used as tie bar and cable of bridges and also external prestressing projects.

Three- wire steel strands make up tough cables used for bridge construction.

High carbon steel strand has high tensile strength and low relaxation, so that it can be used as cables in bridge construction.

Seven high carbon steel strands in a girder box for bridge reinforcement.

High carbon steel strand has high toughness and it is ideal for prestressing concrete.

Company Contact:

• Posted By: SWIRE High Carbon Steel Wire Company

• Phone: 8631874682533

• Address: Industrial Park, Anping County, Hengshui City, Heb, Hengshui City, China

• Email:

• Website: http://www.highcarbonsteelwire.com/

• Business Description: Professional for Manufacturing High Carbon Steel Wire
  
  SWIRE High Carbon Steel Wire Company was established in the year 1989, for selling high carbon steel wires, high tensile steel wire meshes and their related products.
  
  After years of hard working and operating, we have been succeeded in developing our company to one of the best leaders of this field, and expanding our business gradually.
  
  Today we have excellent staff and high technologies for manufacture.
  
  Now we produce high carbon steel wires and its related products with high quality and in various kinds, including:
  
  High carbon steel wires.
  
  Galvanized high carbon steel wires.
  
  High carbon steel spring wires.
  
  High carbon steel strand wires.
  
  High carbon steel wires for prestressed concrete.
  
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  High carbon steel tire wires.
  
  High carbon steel hose wires.
  
  High carbon steel wire meshes.
  
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  We also supply services on: 　
  
  Product maintenance.
  
  After sale service.
  
  Customers' specialized order.
  
  Why we are the best:
  
  Expert
  
  Our company was established in 1989, and twenty five year extensive experience cultivated high skilled staff.
  
  Outstanding employees
  
  Our employees would have regular training and examination, competing with each other to ensure continual improvement.
  
  High tech equipment
  
  Our company have introduced the foreign advanced high tech equipment to manufacture high quality high carbon steel wires and its related products, so as to satisfy different customers' different requirements.
  
  Stable customer source
  
  Our company has many stable customers, and we all have the decision of a long term cooperation.
  
  They all very satisfied with our products.
  
  We have the high quality product, the service skilled sale team, the consummation training service, formidable market support and strict surveillance mechanism, therefore we are your best choice.
  
  Our service is always here waiting respectively for your coming, please do not hesitate to contact us at swire@highcarbonsteelwire .
  
  com if you have any question, we will reply as soon as possible.