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CRB550 cold-rolled ribbed steel Size and scope of application
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CRB550 cold-rolled ribbed steel Size and scope of application
CRB550 cold-rolled ribbed steel Size and scope of application
Classification:Water and electricity construction industry
Release date:2015-10-12
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Introduction


Mechanical properties of CRB550 steel:

CRB550 is one of grades which is specified in the ordinary cold-rolled ribbed steel by national standards. CRB550 specifications d range of 4-12mm, tensile and yield strength is 500 to 550. The maximum total elongation Agt> 2%.


CRB550 cold-rolled ribbed steel Size and scope of application:

CRB550 cold-rolled ribbed steel bar as a larger application range in concrete slab reinforcement and its size is 5 mm, 5.5 mm and 6 mm in diameter, 6.5 mm, 7 mm, 8 mm, 9 mm, 10 mm and 11 mm, 12 mm ten series. CRB550 cold-rolled ribbed steel bar is heavily as reinforced (more than 6 mm in diameter) is applied to reinforced concrete site casting class building.


Because CRB550 cold-rolled ribbed steel bar of the design value of tensile strength, compressive strength design value of 400 n/mm2 respectively, 380 n/mm2, so its application range is relatively wide. CRB550 steel should be used as a component of reinforced concrete structures reinforced, steel welding nets, stirrup, construction of prestressed steel bar in reinforced and prestressed concrete structures.


1. Load-bearing bar

Reinforced concrete structure, according to structural calculations, in tension or pressure steel, reinforced in the main part of the configuration.


2. Welded steel mesh

Longitudinal reinforcement and transverse reinforcement were arranged in a certain distance and at right angles to each other, all intersections are welded together mesh.


3, stirrups

Shear strength to meet and join forces to make concrete compression zone reinforcement and work together, in addition to leaving the position of the fixed primary reinforcement member (beam or column) of a variety of steel reinforced steel skeleton of the constitution . Sub-single limb stirrups, stirrups rectangular opening, closed rectangular hoops, diamond stirrups, polygonal stirrups, stirrups and well-shaped circular stirrups like.


4. structural bar

Reinforced concrete structure, according to the steel structure to be set, with respect to the reinforcement force is concerned. Reinforced structure to withstand major force not only the maintenance of, and Rachel, distribution role. Type structural steel are: distribution of ribs, lumbar muscle structure, erect steel, vertical steel girder, reinforced with vertical load-bearing walls, additional reinforcement plate angle.


5. prestressed concrete structure of the non-prestressed reinforcement

Prestressed reinforcement bars outside are non-prestressed reinforcement, which is usually the primary steel, two bars, three bars.



Pole Reinforcement application 1 Pole Reinforcement application 2


Reinforced steel bar can be made into reinforcing mesh by large CNC welding machine. Steel mesh application is very extensive, its name because of geographical and used to call it a lot, there are mainly two kinds of cold rolled steel, hot rolled steel fabric. One of the ribbed and not ribbed. Ribbed steel fabric, rib steel, light steel fabric, shape steel mesh, D6, D8, D10... A5 and A6... C6, C10... B6, B12... E8... Steel fabric such as different name.


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