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Reinforcing steel bar, Concrete reinforcement, Prestressed steel anchor
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Reinforcing steel bar, Concrete reinforcement, Prestressed steel anchor
Reinforcing steel bar, Concrete reinforcement, Prestressed steel anchor
ClassificationWater and electricity construction industry
Release date2015-10-12
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Introduction


Reinforcing steel bar(Rebar) refers to the use of reinforced concrete and prestressed concrete steel, its cross-sectional area is circular, sometimes rectangular with rounded corners. Including round bar, ribbed steel bars, torsion bars. Reinforced concrete with steel refers to straight or reinforced concrete reinforced with steel plate strip, its shape into round bar and deformed bar two, the delivery status of two straight and circular disc.


steel tie bar balcony applicationsteel tie bar roof pouring


A: Steel bar classification:
Many varieties of steel, can be divided into ordinary carbon steel and low alloy steel. Carbon steel carbon content of their number, divided into low-carbon steel (carbon content less than 0.25%), carbon steel (carbon content of 0.25% -0.6%) and high-carbon steel (carbon content of 0.6% -1.4% ). Low carbon intensity low but good plasticity, known as soft steel; high-strength high-carbon steel, but the ductility, weldability is poor, known as a hard steel. Ordinary low-alloy steel, in addition to the elements contained in the carbon steel, but also added a small amount of alloying elements such as manganese, silicon, vanadium, titanium, etc., most low-alloy steels are soft.

1, according to the production process: hot-rolled steel cold-drawn steel cold drawn steel heat treated steel strand;


2, according Intensity: Level I grade grade grade steel;


3, according to shape: round bar, rebar (thread, Herringbone, crescent pattern);


4, according to the chemical composition: carbon steel, low alloy steel.


B. Ther are 2 steel types for the  concrete reinforcemen:
One is the strength of steel, the steel (such as angle, channel, I-beam, etc.) composition;
The other is a flexible steel, which is commonly referred to bars. Flexible steel bars and wire also includes two categories.

C.  the steel according to shape into two round bar and ribbed bars.

1. Light Park ordinary low carbon steel is actually a small bar and a disc park.

2. deformed bar surface ribbed steel rebar is, usually with two longitudinal ribs and evenly distributed along the length direction transverse ribs. Transverse ribs helical shape, herringbone, crescent three kinds. With a nominal diameter of a few millimeters. Deformed bar nominal diameter corresponds to the cross section such as round bar nominal diameter.


                  Steel bar coil   

                 Straight steel bar


Steel nominal diameter 8-50 mm, recommended 6.5,8,12,16,20,22,25,28,32,36,40 mm diameter. Steel: 20MnSi, 20MnV, 25MnSi, BS20MnSi. Steel bar main bear tensile strength. Deformed bars since the ribs of the role, and concrete have greater bonding capacity, and thus better able to withstand the outside.Action force. Steel is widely used in a variety of building structures. Especially for large, heavy, light and thin-walled high-rise building structure.


1)British Standard: BS4449:2005
Steel Grade: 460B 500B



Diameter 
Dia(mm)

6.0
8.010121416182022252832

Theoretical Weight
(kg/m)

0.222
0.3950.6170.8881.211.582.02.472.983.854.836.31


2)ASTM Standard: ASTM A615/A 615M-09
Steel Grade: GR40 GR60


Bar Designation No.345678910

Diameter Dia(In)

3/8''
1/2''5/8''3/4''7/8''1''1-1/8''1-1/4''

Diameter Dia(mm)

9.5
12.715.919.122.225.428.732.3

Theoretical Weight
(kg/m)

0.560
0.9941.5522.2353.0423.9735.0606.404


3)Standard:  JIS G3112:2010  KS D 3504
Steel Grade: SD390 SD490 SD400 SD500


Bar Designatio No.D10D13D16D19D22D25D29D32

Diameter Dia(mm)

9.53
12.715.919.122.225.428.631.8

Theoretical Weight
(kg/m)

0.560
0.9951.562.253.043.985.046.23


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