性     能

指    标

    密度允许偏差, %

+15， -15

    导热系数,w/(m·K)(平均温度70℃±52℃)

≤0.044

    热荷重收缩温度,℃

≥600

 燃烧性能（按GB/T 5464-1999）

不燃

    有机物含量, %

≤5.0

    管壳偏心度，mm

≤5

公称

内径

厚度

mm

(“)

mm

25

30

40

50

60

70

80

90

100

120

150

15

1/2”

22

●

●

●

20

3/4”

27

●

●

●

●

●

●

●

25

1”

34

●

●

●

●

●

●

●

32

1-1/4”

43

●

●

●

●

●

●

●

●

●

40

1-1/2”

48

●

●

●

●

●

●

●

●

●

50

2”

60

●

●

●

●

●

●

●

●

●

65

2-1/2”

76

●

●

●

●

●

●

●

●

●

80

3”

89

●

●

●

●

●

●

●

●

●

90

3-1/2”

106

●

●

●

●

●

●

●

●

●

100

4”

114

●

●

●

●

●

●

●

●

●

●

125

5”

140

●

●

●

●

●

●

●

●

●

●

150

6”

169

●

●

●

●

●

●

●

●

●

●

200

8”

219

●

●

●

●

●

●

●

●

●

250

10”

273

●

●

●

●

●

●

●

●

●

300

12”

325

●

●

●

●

●

●

●

●

●

350

14”

356

●

●

●

●

●

●

●

●

375

15”

381

●

●

●

●

●

●

●

●

400

16”

406

●

●

●

●

●

●

●

●

450

18”

456

●

●

●

●

●

●

●

●

475

19”

483

●

●

●

●

●

●

500

20”

508

●

●

●

●

●

●

550

22”

558

●

●

●

●

●

600

24”

610

●

●

●

●

●