Quality Control

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Quality control process, starts from the selection of the suppliers and it is controlled from the arrival of the raw material (billets), all the way to the sales. Billets are initially classified according to their chemical composition and stored in predetermined locations. These actions are done to control the quality of the final mechanical specification of the product.

The final product testing is done in a modern testing lab, equipped with a computerized testing device, to measure the mechanical properties of the final product.


Steel grade Mechanical properties
Ultimate rupture strength Yield strength Elongation Cold bend test by
N / mm'2 N / mm'2 % 180 Deg
min min min
3ps 370 245 26 good
5ps 490 285 20 good

Steel grade Fraction of total mass of the elements, %
C Mn Si S max P max Cr max Ni max Cu max
3ps 0.14 ~ .22 0.4 ~ 0.65 0.05 ~ 0.15 0.05 0.04 0.3 0.3 0.3
5ps 0.28 ~ 0.37 0.5 ~ 0.8 0.05 ~ 0.15 0.05 0.04 0.3 0.3 0.3

 

Reinforcement Steel Bars Specification:

 
1-Deformed-Reinforcement Bars:
The production of steel bars for construction (reinforcing bars) including, all standard diameters and standard lengths of 12 m and special orders can be produced with different lengths from 4 meters up to 12 meters.
The deformed bars are available in accordance with (ASTM A 615) (grade 40) & (grade 60) standard and may also can be produced to other international standards, upon request.


Mechanical and Chemical Properties:
ا A-III , GOST 5781-57
 ASTM A615 M

DEFORMED-REINFORCEMENT BARS DEFORMED-REINFORCEMENT BARS

 

 

STANDARD SYSTEM SARKIS TUFENKJI Co. Partners
SIZE Q 8 10 12 14 16 18 20 25 32
WEIGHT (W) min 0.370 0.575 0.835 1.13 1.45 1.88 2.32 3.62 5.93 Kg/m
max 0.395 0.615 0.885 1.20 1.60 2.00 2.50 3.80 6.30
OBLIQUE
RIBS
HEIGHT (As) min 0.45 0.55 0.6 0.7 0.75 0.85 1 1.25 1.6 mm
max 0.75 1 1.2 1.3 1.45 1.65 2 2.5 3.2
WIDTH (Bs) min 0.65 0.8 0.95 1.15 1.3 1.5 1.6 2 2.5 mm
max 0.95 1.3 1.6 1.8 1.95 2.15 2.3 3 308
LONGITUDINAL
RIBS
Height (A1) min 0.35 0.5 0.6 0.7 0.8 0.9 1 1.3 1.7 mm
max 1 1.4 1.6 1.9 2.2 2.5 2.8 3.2 4
Width (B1) min 0.7 0.9 1.1 1.3 1.5 1.6 1.7 2 2.8 mm
max 1.5 1.9 2.3 2.7 3 3.3 3.7 4.4 5.5
SPACING (Cs) min 4.4 5.5 6.6 7.7 8.8 9.9 11 14 18 mm
max 5.6 7 8.3 10 11.2 12.5 14 17.5 22
DEGREE (q) 45 ~ 60 Deg


QUALITY GR 40 GR 60
MECHANICAL PROPERTIES YIELD STRENGTH (N\mm'2) min 350 min 540
TENSILE STRENGTH (Nmm'2) min 500 min 680
% ELONGATION L0 = 10d min 16 min 11
CHEMICAL COMPOSITION C % 0.2 ~ 0.26 0.28 ~ 0.36
Si % 0.25 max 0.35 max
Mn % 0.6 ~ 0.9 0.9 ~ 1.1
S % 0.060 max 0.060 max
P % 0.060 max 0.060 max
C ev % 0.45 ~ 0.5 0.5 ~ 0.55


A- Production of steel GR 40


Cross Sectio
mm2
L0
mm
L1
mm
Yield Force
kgf
Re %0.2
kgf/mm2
Tensile Forc
kfg
Rm
kfg/mm2
Rm/Re Elongation % E Modulus
kfg/mm2
78.5 100 146.2 3162. 40.28 4662 59.39 1.47 46.2 20449

ORIENT


B- Production of steel GR 60
Producing by Termix


E Modulus
kfg/mm2
Elongation %
Rm/Re Rm
kfg/mm2
Tensile Forc
kfg
Re %0.2
kgf/mm2
Yield Force
kgf
L1
mm
L0
mm
Cross Sectio
mm2
18273 15.6 1.49 75.79 8567 50.88 5751 138.7 120 113.04

ORIENT


2-Equal Bars:

A T A T A T A T A T A T A T
30 12 20 10 16 8 16 7 12 5 24 4.5 50 4
40 12 25 10 20 8 14 5 29 4.5
30 10 25 8 16 5 34 4.5
40 10 30 8 20 5 47 4.5
50 10 40 8 25 5 48 4.5
50 8 30 5 50 4.5
40 5
50 5

EQUAL BARS




3-Square Bars:
A X A 20 X 20 16 X 16 14 X 14 12 X 12 10 X 10 8 X 8
A X A 14.9 X 14.9 10.7 X 10.7 9.7 X 9.7

Square Bars



4-Equal Angles:

A X T 35 X 35 X 3.5 30 X 30 X 3.5 30 X 30 X 3 25 X 25 X 2.5

Equal Angles

STANDARD - DIN 17100 GRADE - ST 37 - 2
MECHANICAL PROPERTIES TENSILE STRENGHT (N/mm2) 350 / 470
YIELD STRENGTH (N/mm2) 230
ELONGATION (%) 24
CHEMICAL COMPOSITION C (%) 0.07 ~ 0.17
Si (%) 0.03 ~ 0.30
Mn (%) 0.20 ~ 0.60
S (%) max 0.05
P (%) max 0.05