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Stainless steel pipe sizes in China and internationally

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Stainless steel pipe sizes in mm,stainless steel pipe sizes philippines,stainless steel pipe sizes metric.As an engineer, you should know the size of stainless steel pipe. Whether it's mm or meter, you can know it well. We often meet Philippine customers who ask about the size of steel pipes. Today we will list the dimensions of steel pipes.


Nominal pipe size and nominal diameter

Stainless steel pipe size (comparison table between British system and metric system)

Inches are units of length. 1 inch = 2.539999918 cm (CM). Inch or [inch] is the unit of length used in the United Kingdom (UK), that is, the United Kingdom (Commonwealth) and its former colonies. The United States and other countries also use it. In Taiwan and Hong Kong, "inch" is usually written as "inch". The common abbreviation of inch is [in] or ["]" inch "is a newly created word in modern times. It is pronounced" inch ", which is a word with two tones in Chinese characters. For others, such as" Li "pronounced" sea ", it borrows the traditional Chinese length unit" inch "and adds a word beside it to show the difference.


1、 Dimensions of stainless steel pipe

DN15 (4-inch pipe), DN20 (6-inch pipe), DN25 (1-inch pipe), DN32 (1-inch pipe), Dn40 (1-inch pipe), DN50 (2-inch pipe), DN65 (2-inch pipe), DN80 (3-inch pipe), DN100 (4-inch pipe), DN125 (5-inch pipe), DN150 (6-inch pipe), DN200 (8-inch pipe), DN250 (10 inch pipe), etc.

2、 Divide 1 inch into 8 equal parts: 1 / 8 1 / 4 3 / 8 1 / 2 5 / 8 3 / 4 7 / 8 inch.

It is equivalent to the usual 1-7 branch pipes. The smaller dimensions are expressed by 1 / 16, 1 / 32 and 1 / 64, and the unit is still inch. If the denominator and numerator can be approximately divided (for example, the numerator is 2, 4, 8, 16, 32), they should be approximately divided.

Inch means two apostrophes in the upper right corner, such as 1 / 2“

For example, the DN25 (25mm, the same below) water pipe is the British 1 "water pipe, which is also the previous 8 branch pipe.

For example, the DN15 stainless steel pipe is the British 1 / 2 "water pipe, which is also the previous 4-branch water pipe.

For example, the DN20 water pipe is the British 3 / 4 "water pipe, which is also the previous 6-branch water pipe


The relationship between outer diameter and DN and Nb is as follows

Nominal pipe size(NPS)/in

0.25

0.5

0.75

1.0

1.2

1.5

2.0

2.5

3.0

4.0

6.0

Nominal diameter

(DN)/mm

6

15

20

25

32

40

50

65

80

100

150

Nominal pipe size(NPS)/in

8.0

10.0

12.0

14.0

16.0

18.0

20.0

24.0

36.0

42.0

48.0

Nominal diameter(DN)/mm

200

250

300

350

400

450

500

600

900

1000

1200

  

Pipe specification and relevant data

Nominal diameter

inch

external diameter

Approximate inner diameter

Wall thickness

Plain / thickened


Equivalent to seamless pipe

mm

mm

mm

mm

mm

15

4'

21.25

15

2.75/3.25

22

20

6'

26.75

20

2.75/3.5

25

25

1"

33.5

25

3.25/4

32

32

1.2"

42.25

32

3.25/4

38

40

1.5"

48

40

3.5/4.25

45

50

2"

60

50

3.5/4.5

57

70

2.5"

75.5

70

3.75/4.5

76

80

3

88.5

80

4/4.75

89

100

4

114

106

4/5.0

108

125

5

140

131

5/5.5

133

150

6

165

156

5/5.5

159

200

8

219

207

6

219

250

10

273

259

7

273

300

12

325

309

8

435

350

14

377


9

485

400

16

426


9

535

450

18

478


9

590

500

20

529


9

640

600

24

630


10

755

700

28

720


10

860

800

32

820



975

  

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