JIS G3452 SGP

JIS G3452 SGP

JIS G3452 Grade SGP is a substance that is often used in industrial applications. JIS G3452 SGP Galvanized Pipe is used to transmit steam, water, oil, gas, and air, among other things, at relatively moderate operating pressures.

PRODUCT FEATURES

Main Features and Applications of JIS G3452 SGP Pipe

  1. Used to transport water (not drinking water), air, steam, oil, and gas, as well as other fluids at relatively low pressures. Plastic-lined steel pipe manufactured by coating JIS G3452 SGP is used for water delivery pipelines (carbon steel pipe for ordinary piping)
  2. There are two distinct types: black pipe and white pipe. Temperature range of operation: -15 to 350°C.
  3. MZN grade groove corrosion-resistant ERW steel pipe is also available to defend against groove corrosion along ERW steel pipe welds.

Dimension Tolerance of JIS G3452 SGP Steel Pipe

<40A

±0.5 

50A≤ & <125A

±1

150A, 175A

±1.6

200A≤

±0.8%

Chemical Composition of JIS G3452 SGP Pipe

Letter symbol of grade

P %

S %

SGP

0.40 max.

0.40 max.

Mechanical Composition of JIS G3452 SGP Pipe

Letter symbol of grade

Tensile Test

Tensile Strength

N /mm²

Elongation %

JIS G3452 No.11 and No.12 Test Pieces

JIS G3452 No.5Test Pieces

Longitudinal

Transverse

JIS G3452 SGP

290 min.

30 min.

25 min.

Remarks

1. When the tensile test is carried out for No. 12 or No. 5 test piece for the pipe under 8 mm in wall thickness, the minimum value of elongation shall be obtained by subtracting 1.5 %from the values of elongation given in Table 3-1 for each 1 mm decrease in wall thickness, and rounding off to an integer by JIS z 840i.

Examples of calculations are given in the referenced Table.

2. The values of elongation given in Table 3-1 shall not be applied to the pipe whose nominal size is32 A or smaller. However, the value of elongation shall be recorded.

3. In sampling the tensile test pieces, No.12 and No.5 test pieces shall be taken from the portion which does not involve welded seams.

JIS G3452 SGP Pipe Hydrostatic Test or Nondestructive Test

JIS G3452 chapter 10.6 shall be used to test the SGP black pipe, and the resultant hydrostatic or nondestructive characteristic shall conform to one of the following two. Whichever of them is preferred shall be determined by the purchaser’s specification or at the manufacturer’s discretion.

Hydrostatic property (Applicable till the end of 1990) When 25 kgf/P 25 bar (1) hydrostatic pressure is applied, the black pipe must endure it without leaking.
 Note (1) 1 bar = 105Pa

Dimensions of steel JIS G3452 SGP pipes

Nominal Size

Outside
Diameter
(mm)

Carbon Steel
Pipes for Ordinary
Piping <SGP>
(JIS G3452)

Carbon Steel Pipes for Pressure Service
<STPG> (JIS G3452)

Nominal thickness

A

B

Thickness (mm)

Sch10

Sch20

Sch30

Sch40

Sch60

Sch80

6

1/8

10.5

2.0

1.7

2.2

2.4

8

1/4

13.8

2.3

2.2

2.4

3.0

10

3/8

17.3

2.3

2.3

2.8

3.2

15

1/2

21.7

2.8

2.8

3.2

3.7

20

3/4

27.2

2.8

2.9

3.4

3.9

25

1

34.0

3.2

3.4

3.9

4.5

32

1.1/4

42.7

3.5

3.6

4.5

4.9

40

1.1/2

48.6

3.5

3.7

4.5

5.1

50

2

60.5

3.8

3.2

3.9

4.9

5.5

65

2.1/2

76.3

4.2

4.5

5.2

6.0

7.0

80

3

89.1

4.2

4.5

5.5

6.6

7.6

90

3.1/2

101.6

4.2

4.5

5.7

7.0

8.1

100

4

114.3

4.5

4.9

6.0

7.1

8.6

125

5

139.8

4.5

5.1

6.6

8.1

9.5

150

6

165.2

5.0

5.5

7.1

9.3

11.0

200

8

216.3

5.8

6.4

7.0

8.2

10.3

12.7

250

10

267.4

6.6

6.4

7.8

9.3

12.7

15.1

300

12

318.5

6.9

6.4

8.4

10.3

14.3

17.4

350

14

355.6

7.9

6.4

7.9

9.5

11.1

15.1

19.0

400

16

406.4

7.9

6.4

7.9

9.5

12.7

16.7

21.4

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