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ERW

Product Standard

Range of ERW tube

External
diameter		 Thickness
1.0 1.2 1.6 1.8 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 6.8 7.5 8.0 8.5
21.7
25.4
27.2
31.8
34.0
38.1
41.5
42.7
48.6
54.0
60.5
70.0
74.6
76.3
89.1
92.5

Electric Resistance Welded Carbon Steel Tubes for Automobile Structural Purposes

KS D 3598
Type Code Chemical Composition(%) Tensile Test Flaring Test Flattening Test Bend Test
C Si Mn P S Tensile
Strength
N/㎟(kg/㎟)		 Yield Point
and Yield
Strength
N/㎟n(㎏/㎟)		 Elongation(%)
Test Piece 11
Test Piece 12
Longitudinal		 Size after
Pressed
and Flattened
(D is the
outer radius
of a pipe)		 Distance
from the
Plane Table (H)
(D is the
outer radius
of a pipe)		 Bend
Angle		 nternal
Radius
(D is the
outer
radius of
a pipe)
G STAM 290GA 0.12↓ 0.35↓ 0.60↓ 0.035↓ 0.035↓ 294↑(30↑) 177↑(18↑) 40↑ 1.25D ½D 180° 4D
STAM 290GB 294↑(30↑) 177↑(18↑) 40↑ 1.25D ½D 180° 4D
STAM 340G 0.20↓ 0.35↓ 0.60↓ 0.035↓ 0.035↓ 343↑(35↑) 196↑(20↑) 35↑ 1.20D ⅔D 90° 6D
STAM 390G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 392↑(40↑) 235↑(24↑) 30↑ 1.20D ⅔D 90° 6D
STAM 440G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 441↑(45↑) 304↑(31↑) 25↑ 1.15D ¾D 90° 6D
STAM 470G 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 471↑(485↑) 324↑(33↑) 22↑ 1.15D ¾D 90° 8D
STAM 500G 0.30↓ 0.35↓ 0.30 ~ 1.00 0.035↓ 0.035↓ 500↑(51↑) 353↑(36↑) 18↑ 1.15D ⅞D 90° 8D
H STAM 440H 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 441↑(45↑) 353↑(36↑) 20↑ 1.15D
STAM 470H 0.25↓ 0.35↓ 0.30 ~ 0.90 0.035↓ 0.035↓ 471↑(48↑) 412↑(42↑) 18↑ 1.10D
STAM 500H 0.30↓ 0.35↓ 0.30 ~ 1.10 0.035↓ 0.035↓ 500↑(51↑) 431↑(44↑) 16↑ 1.10D
STAM 540H 0.30↓ 0.35↓ 0.30 ~ 1.10 0.035↓ 0.035↓ 539↑(55↑) 481↑(49↑) 13↑ 1.05D