Steel bar Grade

Wire rod

Grade

Chemical Composition %

C

SI

Mn

S

P

CRB550

Q235

0.14~0.22

d"0.03

0.30~0.65

d"0.050

d"0.045

CRB650

Q235

0.14~0.22

d"0.03

0.30~0.65

d"0.050

d"0.045

CRB550

Cold-rolled ribbed steel bar

Cold Drawn plain and Round Bar

Specification

4-12mm,larger in steps of 0.5mm

Recommendation

Specification  (mm)

4mm,5.5mm,7mm,8.5mm,

10.5mm 12mm

4mm,5mm,6mm,7mm,8mm,

9mm,10mm,11mm 12mm

Surface Condition

With rib on Three sides

Plain and round

Production Standard

GB13788-2002

BS4482:1985

Properties

Elongation 10  08%

Elongation 5  012%

Tensile strength b 0550 Mpa

Tensile strength b 0510 Mpa

Designed strength fy0360Mpa

Designed strength fy0320Mpa 

Specifications:

Standard: GB13788-2008

Material:  Q235,

Wire dia: 5-12m

Length: 4-12mm

Applications of angle steel :

Framework of all kinds of construction and engineering

Construction joist

Iron tower

Advantages and features :