大口径直缝焊管规格表

外径

壁厚（mm）

DN

mm

12

14

16

18

20

22

25

28

30

32

35

36

38

40

45

50

14

356

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●

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16

406

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●

●

●

●

●

●

18

450

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●

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18

460

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●

●

●

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●

20

508

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●

●

●

●

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22

560

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●

●

●

●

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24

610

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●

●

●

●

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●

25

630

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●

●

●

●

●

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●

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26

660

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28

711

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30

762

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●

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32

812

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34

863

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36

915

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38

965

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40

1016

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42

1066

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44

1117

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46

1168

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48

1219

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52

1320

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56

1422

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