Product Description Model NO.: CRB550 Type: Carbon Steel Bar Diameter: 3-12mm Technique: Cold Drawn Special Use: Cold Heading Steel Specification: JIS, GB, AISI, SGS HS Code: 7227900 Application: Structural Steel Bar Surface Treatment: Polished Steel Grade: 500 Series Alloy: Non-alloy Trademark: PUERSEN Origin: China Ribbed bars
 
cold rolled ribbed bars is a construction steel materials.Its rolling with rib on Three side on normal temperature, can keep high tensile strength and high quality.
 
 It is widely used as the fitting bar for various steel bar concrete structure engineering and making of various construction components. With its high strength and the fixing strength with concrete, its sufficient plastic property, it can enhance the technical and the quality of the engineering, reduce the cost of raw materials and the cost of engineering at the same time. The finished products can be round coil or straight sizes. 

Advantage:
1, high strength steel, construction steel and savings reduce the project cost. CRB550 grade cold-rolled and hot-rolled ribbed steel bars compared to plain bars for cast structure (in particular floor roof) can save 35%  40% of steel. If not consider hook, steel savings even more. According to the market price of steel, each using one ton cold-rolled ribbed steel bars, steel cost savings of around $ 800.
2, cold-rolled ribbed steel bars and concrete bond properties between the good. Therefore, for the member, the member from fundamentally eliminate anchorage zone cracking, wire slippage and damage phenomenon, and enhances the member ends carrying capacity and crack resistance; reinforced concrete structure, the crack width than light circle steel, even smaller than hot-rolled rebar.
3, cold rolled ribbed steel elongation compared with the same kind of cold steel big.

Steel Bar Grade

Wire Rod Grade

Chemical Composition

C

Si

Mn

v/Ti

S

P

CRB550

Q235

0.09~0.15

≤0.03

0.25~.055

-

≤0.050

≤0.045

CRB650

Q215

0.14~0.22

≤0.03

0.30~0.65

-

≤0.050

≤0.045

Steel Bar Grade	Presentation	Wire Diameter
CRB550	Make coils:50~2000KG	3-12mm
CRB550	Cut straight: 1~12m	3-12mm

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