KS D3568 Structural Tubes

KS D3568 Structural Tubes

Standard : SPSR400 490 540 590
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Product Details

KS D3568 Structural Tubes

Standard : SPSR400 ,490,540,590

Application 

1.city & industrial water

2.irrigation & agriculture water

3.oil & gas supply

4. sprinkler

5.fire hydrant,

6.ship piping etc.

Surface :black painting ,varnish painting, anti rust oil, hot galvanized, cold galvanized, 3PE etc .

Package: hexagonal bundled or loose packing.

Weight and Dimension(KS D 3568(STK) JIS G 3466(STK)

Diameter

weight

area

Moment inertia

Section modules

Radious of Gyration

AXB

Wall thickness

Kg/m

cm

cm4

cm

cm

20x20

1.2

1.6

0.697

0.872

0.865

1.123

0.53

0.67

0.52

0.769

0.751

25x25

1.2

0867

1.105

1 03

0.824

0.965

1.6

1.12

1.432

1 27

1.02

0.942

30x30

12

1 06

1.345

1 83

1 22

1.17

1.6

1.38

1.752

2.31

1.54

1.15

40x40

1.6

1.88

2.392

5.79

2.90

1.56

2.3

2.62

3.332

7.73

3.86

1.52

50x50

1.6

2.38

3.032

11.7

4.68

1.96

2.3

3.34

4.252

15.9

6.34

1.93

3.2

4.50

5.727

20.4

8.16

1.89

60x60

1.6

2.88

3.672

20.7

689

2.37

2.3

406

5.172

28.3

9.44

2.34

3.2

5.50

7.007

369

12.3

2.30

75x75

1.6

3.64

4.632

41.3

11.0

2.99

2.3

5.14

6.552

57.1

15.2

2.95

3.2

701

8.927

75.5

20.1

2.91

4.5

9.55

12.17

986

26.3

2.85

90x90

2.3

6.23

7.932

101

22.4

3.56

3.2

8.51

10.85

135

29.9

3.52

100x100

2.3

695

8.852

140

27.9

3.97

3.2

9.52

12.13

187

37.5

3.93

40

117

14.95

226

45.3

3.89

4.5

13.1

16.67

249

49.9

3.87

6.0

17.0

21.63

311

62.3

3.79

125x125

3.2

12.0

15.33

376

60.1

4.95

4.5

16.6

21.17

506

80.9

4.89

5.0

18.3

23.36

553

884

4.86

6.0

21.7

27.63

641

103

4.82

 rectangle

diametion

weight

area

moment of inertia

Section modulus

redious of gyration

AXB

thickness

w

a

IX

IY

zx

zy

ix

iy

mm

mm

kg/m

cm2

cm4

cm4

cm3

cm3

cm

cm

30x20

1.2

0.868

1.105

1.34

0.711

0.890

0.711

1.10

0802

16

1.124

1.4317

1.66

0.879

1.11

0.879

1.80

0784

40x20

1.2

1.053

1.3453

2.73

0.923

1.36

0.923

1 42

0.828

1.6

1.357

1.7517

3.43

1.15

1.72

1.15

1.40

0 810

50x30

1.6

1.88

2.392

7.96

3.60

3.18

2.40

1.82

1.23

2.3

2.62

3.332

10.6

4.76

4.25

3.17

1 79

1.20

60x30

1.6

2.13

2.721

12.5

4.25

4 16

2.83

2.15

1.25

2.3

2.98

3.792

16 8

5.65

5.61

3.76

2.11

1.22

3.2

3.99

5.082

21 4

7.08

7.15

4.72

2.05

1.18

75x45

16

2.88

3.672

284

12 9

7.56

5.75

2.78

1.88

2.3

4.06

5.172

38.9

17.6

10 4

7.82

2.74

1.84

3.2

5.50

7.007

508

22.8

13.5

10.1

2.69

1.80

80x40

1.6

2.88

3.672

30.7

10.5

7.68

5.26

2.89

1.69

2.3

4.06

5.172

42.1

14.3

10.5

7.14

2.85

1.66

3.2

5.50

7.007

54.9

18 4

13.7

9.21

2.80

1.62

100x50

1.6

3.64

4.632

61.3

21.1

12.3

8.43

3.64

2.13

2.3

5.14

6.552

84.8

29.0

17.0

11.6

3.60

2.10

3.2

7.01

8.927

112

380

22.5

15 2

3.55

2.06

4.5

9.55

12.17

147

489

29.3

19.5

3.47

2.00

125x75

2.3

6.95

8.852

192

87.5

30.6

23.3

4.65

3.14

3.2

9.52

12.13

257

117

141

31.1

4.60

3.10

4.0

11.7

14.95

311

141

19.7

37.5

4.56

3.07

4.5

13.1

16.67

342

155

54.8

41.2

4.53

3.04

6.0

17 0

21.63

428

192

68.5

51.1

4.45

2.98

150x75

3.2

10 8

13.73

402

137

53.6

36.6

5.41

3.16

150x100

3.2

12 0

15.33

488

262

65.1

52.5

5.64

4.14

4.5

16.6

21.17

658

352

87.7

704

5.58

4.08

6.0

21 7

27.63

835

444


888

5.55

401

Mechanical Properties  

Symbol of grade

Tensile test

Tensile strength N/mnftkgf/innf)

Yield strength

N/mmXkgf/miif)

Elongation(No.5 test piecet%))

SPSR400

(STKR400)

Min 400 (Min. 400)

Min 245 (Min. 245)

Min 23 (Min. 23)

SPSR490

Min 490

Min. 325

Min 23

(STKR490)

(Min. 490)

(Min. 325)

(Min. 23)

SPSR540

Min, 540

Min, 390

Min, 20

SPSR590

Min. 590

Min. 440

Min. 20

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