Billets

We manufacture continuous cast billets at our state of art technology provided by PRIMETAL. Facilities have been designed in a unique integrated manner, in which the hot metal from our Quantum Electric Arc Furnace (QEAF) is refined in ladle refining furnace (LRF) and then casted in continuous casting machine (CCM). Our CCM is high speed caster capable to cast 6 meter per minutes. The CCM is equipped with M-EMS, closed casting technique having 3 strands. The billets are cut in to sizes using diagonally shear cut and loaded in the tilt-over-cooling-bed (TOCB) to ensure natural and homogenize cooling. We stack the billets from the cradle of TOCB in the billet storage yard using magnetic EOT cranes according to the grades and sizes. The heat number and grade color are strictly maintained for identification and traceability in each and every billets.

Available Sizes

160X160 mm2 size, length 12000 mm

160X160 mm2 size, length 6000 mm

130X130 mm2 size, length 12000 mm

130X130 mm2 size, length 6000 mm

                   Available Grades

Billets produced here are 3sp, 4sp, 5sp as well as SAE 1015, 1020, 1025 and 1030 grades. For re-rolling mills to produce rebar, we provide billets for B500CWR, B420DWR and B500DWR chemical composition as per ISO 6935-2: 2016. We also produce billet for structural steel like MS Angel, MS Channel and MS Square bar complying ISO 630 standard. Likewise, we can produce billets on demand as per customer requirement based on national & international standard.

Physical Properties of Billets

Dimensions and physical properties

Size tolerance

Length tolerance

Bend per meter

Rhomboidity

Corner radius

Angular Twist

Surface quality

Internal quality

Maximum Value*

±2%

±100 mm

4 mm

±2%

4 mm

1° per meter

Free from scabs, cracks and overlaps

Free from blow holes, pin holes, shrink holes and harmful internal cracks

 

   

 GPH Quantum Rebar

  1. GPH Quantum B500CWR Rebar (Available sizes-8mm, 10mm, 12mm, 16mm, 20mm, 22mm, 25mm, 28mm, 32mm, 40mm & 50mm)

 

Standard conform Steel grade

BDS ISO 6935-

2-2016 Grade B500CWR

BS 4449:2005+A3:2016

Grade B500C

GOST R52544-

2006 Grade A500C

DIN 488-

1:1984 Grade BSt 500S & BSt 500M

IS 1786:2008

Grade Fe500

JIS G3112:1987

Grade SD50 & SD490

GB GB/T 1499.2-2018

Grade HRB500

GPH QUANTUM B500CWR

Country of Origin

Bangladesh

British

Russian

Germany

Indian

Japanese

Chinese

Product Chemical  Composition, max. (%)

C=0.24

Mn=1.66

P=0.058

S=0.058

Si=0.60

N=0.014

CE=0.55

C=0.24

P=0.055

S=0.055

Cu=0.85

N=0.014

CE=0.52

 

C=0.24

Mn=1.70

P=0.055

S=0.055

Si=0.95

N=0.013

Cu=0.55

CE=0.52

C=0.24

P=0.055

S=0.055

N=0.013

C=0.32

P=0.060

S=0.060

S & P=0.115

N=0.012

CE=0.53

C=0.32

Mn=1.80

P=0.040

S=0.040

Si=0.55

CE=0.60

C=0.25

Mn=1.60

P=0.045

S=0.045

Si=0.80

N=0.012

CE=0.57

C=0.18-0.24

Mn=0.80-1.00

P=0.040

S=0.040

Si=0.15-0.35

N=0.012

CE=0.50

Yield Strength, Ys

500 MPa (min.)

500 MPa (min.)/ 650 MPa (max.)

500 MPa (min.)

500 MPa

(min.)

500 MPa (min.)

490-628 MPa

500 MPa

(min.)

500 MPa (min.)

Tensile Strength, Ts

-

-

 

600 MPa (min.)

550 MPa

(min.)

565 MPa (min.)

618 MPa (min.)

630 MPa

(min.)

Ys*1.15 MPa (min.)

Ts/Ys Ratio

1.15 min.

≥1.15, <1.35

1.08 min.

1.05 min.

1.08 min.

-

1.25 min.

1.15 min.

Total Elongation at Maximum force, EMF

 

7 % min.

 

7.5 % min.

-

-

-

-

 

7.5 % min.

 

7.0 % min.

% Elongation after Fracture, min. (%)

16 (GL=5D mm)

-

14 (GL=5D mm)

10 (GL=5D mm)

12 (GL=5D mm)

12-14 (GL=5D mm)

15 (GL=5D

mm)

14% min (GL=5D mm)

  1. GPH Quantum B500DWR Rebar (Available sizes-8mm, 10mm, 12mm, 16mm, 20mm, 22mm, 25mm, 28mm, 32mm, 40mm & 50mm)

Standard conform Steel grade

BDS ISO 6935-

2-2016 Grade B500DWR

IS 1786:2008

Grade Fe 500D

GPH QUANTUM B500DWR

Country of Origin

Bangladesh

Indian

Product Chemical Composition, max. (%)

C=0.35

Mn=1.88

P=0.048

S=0.048

Si=0.60

N=0.014

CE=0.66

C=0.27

P=0.045

S=0.045

S & P=0.085

N=0.012

CE=0.53

C=0.25-0.32

Mn=0.90-1.40

P=0.040

S=0.040

Si=0.15-0.35

N=0.012

CE= 0.62

Yield Strength, Ys

500 MPa

(min.)/ 650 MPa (max.)

500 MPa

(min.)

500 MPa

(min.)/ 650 MPa (max.)

Tensile Strength, Ts

-

565 MPa

(min.)

630 MPa (min)

Ts/Ys Ratio

1.25 min.

1.10 min.

1.25 min.

Total Elongation at Maximum force, EMF

8% min.

5% min.

8 % min.

% Elongation after Fracture, min. (%)

13 (GL=5D mm)

16 (GL=5D mm)

14 (GL=5D mm)

  1. GPH Quantum B420DWR Rebar (Available sizes-8mm, 10mm, 12mm, 16mm, 20mm, 22mm, 25mm, 28mm & 32mm)

Standard conform Steel grade

BDS ISO 6935-

2-2016 Grade B420DWR

ASTM A615/A615M-15a G60[420]

ASTM A706/A706M-14 G60[420]

DIN 488-

1:1984

Grade BSt 420S

IS 1786:2008

Grade Fe415D

JIS G3112:1987

Grade SD40 & SD390

GB 1499.2-

2007 Grade HRB400

GPH QUANTUM B420DWR

Country of Origin

Bangladesh

American

American

Germany

Indian

Japanese

Chinese

Product Chemical Composition, max. (%)

C=0.33 Mn=1.56 P=0.048 S=0.048 Si=0.60 N=0.014 CE=0.61

P=0.06 max.

C=0.33 Mn=1.56 P=0.043 S=0.053 Si=0.55 CE=0.55

C=0.24 P=0.055 S=0.055 N=0.013

C=0.27

P=0.05

 S=0.05

S & P=0.095

 N=0.012 CE=0.53

C=0.29 Mn=1.80 P=0.040 S=0.040 Si=0.55 CE=0.55

C=0.25 Mn=1.60 P=0.045 S=0.045 Si=0.80 N=0.012 CE=0.57

C=0.25-0.32 Mn=1.00-1.40 P=0.040 S=0.040 Si=0.15-0.35 N=0.012

CE= 0.60

Yield Strength, Ys

420 MPa

(min.)/ 546 MPa (max.)

420 MPa (min.)

420 MPa (min.)/

540 MPa (max.)

420 MPa

(min.)

415 MPa

(min.)

392-510 MPa

400 MPa

(min.)

420 MPa(min)

546 MPa(Max)

Tensile Strength, Ts

-

620 MPa (min.)

550 MPa (min.)

500 MPa

(min.)

485 MPa

(min.)

559 MPa (min.)

540 MPa

(min.)

625 MPa (min)

Ts/Ys Ratio

1.25 min.

-

1.25 min.

1.05 min.

1.10 min.

-

1.25 min.

1.25 min.

Total Elongation at Maximum force, EMF

8% min.

-

-

-

-

-

7.5% min.

8 %min.

% Elongation after Fracture, min. (%)

14 (GL=5D mm)

7-9 (GL=200 mm)

10-14 (GL=200 mm)

10 (GL=5D

mm)

14.5 (GL=5D mm)

16-18 (GL=5D mm)

16 (GL=5D

mm)

16 (GL=5D mm)

  1. GPH Quantum B600C-R Rebar (Available sizes-16mm, 20mm, 22mm, 25mm, 28mm, 32mm, 40mm & 50mm)

Standard conform Steel grade

BDS ISO 6935-

2-2016 Grade B600C-R

IS 1786:2008

Grade Fe 600

GPH QUANTUM B600C-R

Country of Origin

Bangladesh

Indian

Product Chemical Composition, max. (%)

 

P=0.070

S=0.070

 

C=0.32

P=0.045

S=0.045

S & P=0.085

N=0.012

CE=0.53

C=0.25-0.27

Mn=1.00-1.20

P=0.040

S=0.040

Si=0.15-0.35

N=0.012

CE= 0.56

Yield Strength, Ys

600 MPa

(min.)

600 MPa

(min.)

600 MPa

(min.)

Tensile Strength, Ts

-

660 MPa

(min.)

660 MPa (min)

Ts/Ys Ratio

1.15 min.

1.06 min.

1.15 min.

Total Elongation at Maximum force, EMF

7% min.

-

7 % min.

% Elongation after Fracture, min. (%)

10 (GL=5D mm)

10 (GL=5D mm)

12 (GL=5D mm)

Bar size, Nominal Unit Weight, Dimensions and Dimensional Tolerances of GPH QUANTUM B500CWR, B500DWR, B420DWR & B600C-R Rebar

 

Nominal Diameter

Nominal

Cross sectional area

Nominal Unit Weight

Permissible Deviation as

per BDS ISO 6935- 2:2016

Approximate Length per MT

mm

mm²

kg/m

(%)

Meter

Feet

8

50.3

0.395

±8

2,534.31

8,314.66

10

78.5

0.617

±6

1,621.96

5,321.38

12

113.1

0.888

±6

1,126.36

3,695.40

16

201.1

1.58

±5

633.58

2,078.67

20

314.2

2.47

±5

405.49

1,330.35

22

380.3

2.98

-

335.12

1,099.46

25

490.9

3.85

±4

259.51

851.42

28

616

4.83

±4

206.88

678.75

32

804.2

6.31

±4

158.39

519.67

40

1257

9.86

±4

101.37

332.59

50

1964

15.42

±4

64.88

212.86

 

Note: As per BDS ISO 6935-2:2016 standard (BSTI Approved)

Actual Unit Weight= (Actual sample weight, in Kg/Actual Length of the sample, in meter) Actual Diameter, in mm=12.74X√Actual Unit Weight

Available Rebar Delivery Type: Straight and Bend condition

Available Rebar length: 6-12 meters with +100mm tolerance

Bend Test Requirements of GPH Quantum Rebar:

Bar Size

Mandrel Size As per BDS ISO 6935-2:2016 Standard,

mm

mm

≤16

3d

16<d≤32

6d

32<d≤50

7d

After testing, the bars shall show neither rupture nor cracks visible to a person of normal or corrected vision.

Note: d=Nominal diameter of the specimen. Test bends 180 unless noted otherwise.

 

Re-Bend Test Requirements of GPH Quantum Rebar:

Bar Size

Mandrel Size As per BDS ISO 6935-2:2016 Standard,

mm

mm

≤16

5d

16<d≤25

8d

25<d≤50

10d

 

The angle of bend before heating (Ageing) shall be at least 90ᴼ, after that sample shall be heated to 100ᴼ C for an hour and cooled in an air and the angle of Re-bend shall be  at least 20ᴼ. Both angles shall be measured before unloading. After testing, the bars shall show neither rupture nor cracks visible to a person of normal or corrected vision. Bend and Re-bend test are performed as per BDS ISO 6935 Standards. The test is conducted for each lot of production frequently to confirm the bendability.

 

 Section Items (Upcoming)

 

Equal Leg Angles

               

Standard Conforming:

                                                                                                     

 

BDS ISO 657-1:2008

BDS ISO 630-3:2012

ASTM A572 Grade 50

 

Product Sizes (mm):

38x38x4, 50x50x5, 64x64x4, 75x75x7,

90x90x7, 100x100x8, 100x100x10, 120x120x10

Channels

Standard Conforming:

ASTM A572 Grade 50

BDS ISO 657-11:2008

BDS ISO 630-3:2012

 

Product sizes (mm):

40x20, 50x25, 60x30, 76x38, 80x45, 100x50, 127x64, 152x74

Beam (I Beam & H Beam)

Structural steel is most often used in the construction industry in the form of structural beams. They provide structural support to buildings, while the web of the beam provides resistance to shear forces, such as breaking, tearing apart, or collapsing the flange resists bending of the section.

 

                  

 

 

Standard Conforming:

 

ASTM A572 GRADE 50.

BDS ISO 657-15:2008,

BDS ISO 657-16:2008,

BDS ISO 630-3:2012

 

Product sizes (mm): 80, 100, 120, 140, 160

 

FLAT Bar

 

 

Standard Conforming:

ASTM A572 GRADE 50

 

Product size (mm): 210x10

Square Bar:

 

 

 

Standard Conforming:

BDS ISO 1035-2:2006

BS EN 10059:2003

 

 

Product Sizes: 10 mm & 12 mm

 

 

  1. Threaded re-bar with coupler (Incorporate threaded bar and coupler brochure)

Used With: 12 to 50mm Rebar sizes (ASTM #4 to #18)

 

Coupler Complying Standards: Eurocode 2, BS 8110, DIN 1045, ACI 318, IBC, AASHTO, ASME Sec III Div 2

 

Gas Product: LOX, GOX, LIN, LARG, GAN, Garg.

LOX: Liquid Oxygen

GOX: Gaseous Oxygen

LIN: Liquid Nitrogen

LARG: Liquid Argon

GAN: Gaseous Nitrogen

Garg: Gaseous Argon

EVENTS & PUBLICATIONS

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