PRODUCTS

Product

The company implementing technology · quality and trust

Product

Dongil Steel Co., Ltd. does the best to become a world-class steel company
by investing in equipment continuously and manufacturing globally competitive products with the best quality.

  • Cold Drawn Steel Square Bar제품이미지
  • Cold Drawn Steel Hexagonal Bar제품이미지
  • Cold Drawn Steel Rectangular Bar제품이미지

Square · Hexagonal · Rectangular

Hot-rolled steel product refers to the cold-drawn product with hot-rolled bars and rods. Hot-forged product is a high value-added material used for precision parts of automobiles and machines through cold & hot forging and machine processing.
In line with more delicate requests of customers, eddy current testing, ultrasonic testing, and other kinds of testing are conducted to make faultless and high-polishing products with precise dimensions.

Usage : Auto-Parts, Oilpresure Pitting, Shipbuilding Hardware, Rail, Bolt-Nut

Quality of the material : Carbon Steel

Oridyct Standards : 8 ~ 60mm

UsageㆍQuality of the materialㆍProduct standard

◀ Touch and drag left and right ▶
Product Grade Size Range Applications
Square Bar
Hexagonal Bar
Cold Drawn
Rectangular Bar		 S10C ~ S55C 6MM ~ 80MM 8MM ~ 60MM
12MM ~ 60MM
Width 30MM ~ 75MM
Thickness 20MM ~ 60MM

Mechanical Properties

◀ Touch and drag left and right ▶
Division Tension Strength
(kgf/㎟)		 Hardness
(HRB)		 Remark
Rolled steel for general structure over 45 over 70 SS330, SS400, SS490, SS540
Carbon steel for Machine structure ~S25C over 50 over 75 S10C, S12C, S15C, S17C, S20C, S25C
30C~ over 60 over 85 S30C, S35C, S38C, S40C, S45C(S)

Dimension Tolerance

◀ Touch and drag left and right ▶
Diameter(㎜) h7 h8 h9 h10 h11 h12
More than 6.0 below 10.0 0 -0.015 0 -0.022 0 -0.036 0 -0.058 0 -0.090 0 -0.15
More than 10.0 below 18.0 0 -0.018 0 -0.027 0 -0.043 0 -0.070 0 -0.11 0 -0.18
More than 18.0 below 30.0 0 -0.021 0 -0.033 0 -0.052 0 -0.084 0 -0.13 0 -0.21
More than 30.0 below 50.0 0 -0.025 0 -0.039 0 -0.062 0 -0.10 0 -0.16 0 -0.25
More than 50.0 below 80.0 0 -0.030 0 -0.046 0 -0.074 0 -0.12 0 -0.19 0 -0.30

ToleranceㆍDiameter Deviation

◀ Touch and drag left and right ▶
Product Shape Product Standard
(Diameter x Length)		 Dimension Tolerance Grade Application
Diameter(㎜) Length(㎜)
CD BAR Round (R) ~13.0 4,000~6,000 h9
13.0~ 4,000~6,000
Hexagon (Hx) 12.0~60.0 4,000~6,000 h11
Square (Sq) 8.0~60.0 4,000~6,000 h12
Diameter deviation Within diameter tolerance 30%

Chemicals

Standard Name Chemicals and Mechanical Property
Rolled carbon steel for cold - finished steel bars Chemical component
Carbon steel for machine structural use Chemical component
top