Definition:

Cold-rolled ribbed steel bars are made from hot-rolled round wires through cold-rolling, with uniformly distributed transverse ribs on the surface alongside the length direction.

Technical Parameters

STANDARD		Re YIELD STENGTH Mpa/(ksi)	Rm TENSILE STRENGTH Mpa/(ksi)	Rm/Re RATIO	ELONGATION (Reduction of area)	SHEAR STRENGTH (N/mm2)	BEND TEST


ASTM Standard Specification for Steel wire/ Steel Welded Wire Reinforcement,Plain,for Concrete	ASTM A 82M-07	Rp0.5≥485(70)	≥550(80)	≥1.05	(Z≥30%)	-	D=2d

	ASTM A185M-06≥φ3.15mm	≥450(65)	≥515(75)	≥1.05	(Z≥30%)	≥241xSmax	D=2d

BS 4482：2005 Steel Wire for the Reinforcement of Concrete	500 <8mm	≥500	≥510	≥1.02	Agt≥1.0%	-	D=4d

	500 ≥8mm	≥500	≥525	≥1.05	Agt≥2.5%

BS 4483：2005 Steel Fabric for the Reinforcement of Concrete	B500A	≥485	≤650	≥1.03 (ifd<8mm,≥1.02)	Agt≥2.5 (ifd<8mm,≥1.0)	≥125xSmax	D=4d

	B500B	≥485	≤650	≥1.03 (ifd<8mm,≥1.02)	Agt≥4.0%

	B500C	≥485	≤650	≥1.13	Agt≥6.0%

BS 4449：2005 Steel for the Reinforcement of Concrete-Weldable Reinforcing Steel	B500A	≥500	≤650	≥1.05 (ifd<8mm,≥1.02)	Agt≥2.5% (ifd<8mm,≥1.0)	≥121xSmax	if d≤16(D=4d) if d>16(D=7d)

	B500B	≥500	≤650	≥1.08	Agt≥5.0%

	B500C	≥500	≤650	≥1.15,≤1.35	Agt≥7.5%

AS/NZS 4671：2001 Steel Reinforcing Materials	500L	≥500	≤750	≥1.03	Agt≥1.5%	≥250xSmax	D=4d

	500N	≥500	≤650	≥1.08	Agt≥5.0%

	500E	≥500	≤600	≥1.15,≤1.4	Agt≥10.0%

SS 561：2010 Steel Fabric for the Reinforcement of Concrete	500A	≥485	≤650	≥1.03	Agt≥2%	≥250xSmax	D=4d

	500B	≥485	≤650	≥1.06	Agt≥4.0%

	500C	≥485	≤650	≥1.13	Agt≥6.0%

Parameters:

Material: CRB550/ CRB650/ CRB800/ CRB600H/ CRB680H/ CRB800H,

Diameter: 5~12mm for CRB550/ CRB600H/ CRB680H,

4,5,6mm for CRB650/ CRB800/ CRB800H,

Length: ≤12m (Transportation restriction)

Production Standard:

GB/T13788-2017, Cold rolled ribbed steel bars (Chinese),

Other standards negotiable.

Advantages

1. Save Steel Consumption

Normally cold-rolled ribbed bars have higher strength than hot-rolled wires, so it can save steel consumption in some cases, that's why we see its application in some projects to substitute conventional steel bars or as prestress concrete reinforcement.

2. Welding Friendly

Cold-rolled ribbed bars are easier for mesh-welding compared to hot-rolled ribbed bars because there are no longitudinal ribs alongside the length of the bar which adversely affect the connectiveness of the logitudinal bars and the cross bars.

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Cold Rolled Ribbed Steel Wire

Definition:

Technical Parameters

Parameters:

Production Standard:

Advantages