PVC-U pipes for non-pressure buried drainage and sewerage systems-Metric

Item

Requirements

1

density kg/m³

1350   ~1550

2

Ring stiffness

SN2

≥2   kN/m²

SN4

≥4   kN/m²

SN8

≥8   kN/m²

SN12.5

≥12.5 kN/m

SN16

≥16   kN/m¹

3

Falling Weight Impact Test(0℃,TIR)

≤10%

4

Vical softening Temperature(℃)

≥79 ℃

5

Longitudinal Reversion Rate(%)

≤5%

6

Flat performance

No cracks, no rupture

7

Tensile Yield Strength(MPa)

≥40 MPa

8

Elongation at break

d≤315   mm

≥80%

315   mm<d≤630   mm

≥50%

d>630     mm

≥50%

O.D. (mm)

Wall thickness mm

SN2

SN4

SN8

SN12.5

SN16

SDR51

SDR41

SDR34

SDR28

SDR26

emin

em，Max

emin

em，Max

emin

em，Max

emin

em，Max

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em，Max

110

—

—

3.2

3.8

3.2

3.8

4.0

4.6

4.2

4.9

125

—

—

3.2

3.8

3.7

4.3

4.5

5.2

4.8

5.5

160

3.2

3.8

4.0

4.6

4.7

5.4

5.8

6.6

6.2

7.1

200

3.9

4.5

4.9

5.6

5.9

6.7

7.2

8.2

7.7

8.7

250

4.9

5.6

6.2

7.1

7.3

8.3

9.0

10.1

9.6

10.8

315

6.2

7.1

7.7

8.7

9.2

10.4

11.3

12.7

12.1

13.6

355

7.0

7.9

8.7

9.8

10.4

11.7

12.7

14.2

13.6

15.2

400

7.9

8.9

9.8

11.0

11.7

13.1

14.3

16.0

15.3

17.1

450

8.8

9.9

11.0

12.3

13.2

14.8

16.1

18.0

17.2

19.2

500

9.8

11.0

12.3

13.8

14.6

16.3

17.9

19.9

19.1

21.3

630

12.3

13.8

15.4

17.2

18.4

20.5

22.5

25.0

24.1

26.8

710

13.9

15.5

17.4

19.4

20.9

23.3

25.4

28.2

27.2

30.2

800

15.7

17.5

19.6

21.8

23.5

26.2

28.6

31.7

30.6

33.9

900

17.6

19.6

22.0

24.4

26.5

29.5

32.2

35.7

34.4

38.1

1000

19.6

21.8

24.5

27.2

29.5

32.8

35.8

39.6

38.2

42.3

1200

23.5

26.2

29.4

32.6

35.3

39.3

42.9

47.4

45.9

50.6

1400

27.4

30.4

34.3

38.0

41.2

45.6

—

一

—

—

1600

31.3

34.7

39.2

43.4

47.1

52.1

—