Header_TechSpecs

Rolling Mill Process

Steel Bars Mechanical Properties (PNS 49:1991)

CLASSIFICATION PNS GRADE ASTM YIELD STRENGTH (MPa) TENSILE STRENGTH (MPa)
230 Structural 33 230 390
Hot-Rolled
Non-Weldable 275 Intermediate 40 275 480
Deformed
Steel Bar
415 High Tensile 60 415 620

230 Structural 33 230 390
Hot-Rolled
Weldable 275 Intermediate 40 275 480
Deformed
Steel Bar
415 High Tensile 60 415 550*

* Shall not be less than 1.25 times the actual yield strength
CLASSIFICATION SIZE ELONGATION
200mm GAGE LENGTH (%)
BENDING ANGLE
(DEGREE)
PIN DIAMETER COLOR CODING
D<25 18 180° 3D WHITE
Hot-Rolled D>=25 16 4D
Non-Weldable D<25 10 180° 4D YELLOW
Deformed D>=25 8 5D
Steel Bar D<25 8 5D
D>=25 7 180° 6D GREEN

D<25 20 180° 3D WHITE/RED
Hot-Rolled D>=25 18 4D
Weldable D<25 16 180° 4D YELLOW/RED
Deformed D>=25 14 5D
Steel Bar D<25 14 5D
D>=25 12 180° 6D GREEN/RED

D = Nominal Diamter of Bar Specimen

Download PNS 49 Table Proposed PNS 49 2001 Proposed PNS 211 2001

Standard Bending Guide

GRADE REBAR DIAMETER PIN DIAMETER – D
Gr230 10mm – 20mm
25mm – 36mm
3X Rebar Diameter
4X Rebar Diameter

Gr275 10mm – 20mm
25mm – 36mm
4X Rebar Diameter
5X Rebar Diameter

Gr415 10mm – 20mm
25mm – 36mm
5X Rebar Diameter
6X Rebar Diameter

Steel Bars Weight Table

NOMINAL DIAMETER (mm) DOT MARK NOMINAL AREA (sq.m) UNIT WEIGHT (kg/m) NOMINAL WEIGHT PER PIECE ASTM A 615:1995
6m (kg) 7.5m (kg) 9m (kg) 10.5m (kg) 12m (kg) BAR NO. DIAMETER
in mm
6 28.27 0.222 1.332 2.664 2 .250 6.350
8 1 50.26 0.395 2.370 4.740
10 2 78.54 0.616 3.696 4.620 5.544 6.468 7.392 3 .375 9.525
12 3 113.10 0.888 5.330 6.662 7.994 9.327 10.659 4 .500 12.700
16 4 201.06 1.579 9.474 11.843 14.211 16.580 18.948 5 .625 15.875
20 5 314.16 2.466 14.796 18.495 22.194 25.893 29.592 6 .750 19.050
25 6 490.88 3.854 23.124 28.905 34.686 40.467 46.248 8 1.000 25.400
28 7 615.75 4.833 28.998 36.248 43.497 50.747 57.996 9 1.128 28.651
32 8 804.25 6.313 37.878 47.348 56.817 66.287 75.756 10 1.270 32.258
36 9 1017.88 7.991 47.946 59.933 71.919 83.906 95.892 11 1.410 35.814
40 10 1256.64 9.865 59.190 73.987 88.785 103.582 118.380 14 1.693 43.002
50 1963.49 15.413 92.478 115.597 138.717 161.836 184.956 18 2.257 57.328

1) Permissible variation in actual weight of a steel bar from the theoretical weight shall not exceed 6%. While for 8mm diameter & below, it shall not exceed 10%
2) 6mm diameter steel bar is covered by the PNS 211 standard
TECHSPECS-Diagram

Deformation Requirements (in mm)

NOMINAL DIAMETER [D] MAX. AVERAGE SPACING OF LUGS [L] HEIGHT OF LUGS [H] MAX. VALUE SUMMATION OF GAPS OF LUGS [G]
MINIMUM MAXIMUM
10
12
16
20
25
28
32
36
40
7.0
8.4
11.2
14.0
17.5
19.6
22.4
25.2
28.0
0.4
0.5
0.7
1.0
1.2
1.4
1.6
1.8
2.0
0.8
1.0
1.4
2.0
2.4
2.8
3.2
3.6
4.0
7.8
9.4
12.6
15.7
19.6
22.0
25.1
27.5
31.4