Product-Product-Nantong Hengte Tube Co.,Ltd.

The product is formed with high quality welded tube and advanced galvanization technology and equipment,The galvanization layer is equally galvanized and smooth finished.Both inside and outside surface are smooth,without black spot or bleb.It features high corrosion resistance and is widely used as wire tubing under the poor condition.

Black Steel Pipe and Hot dip Galvanized Steel Pipe(ASTM A53/A53M-1996)

Nominal Diameter(inch)	Outside Diameter(mm)	Wall thickness(mm)	Standard weight class	Overpressure resistant code	Class A test pressure(Mpa)	Weight(Black Tube)(kg/m)
1/2”	21.3	2.77	STD	40	4.83	1.27
3/4”	26.7	2.87	STD	40	4.83	1.69
1”	33.4	3.38	STD	40	4.83	2.50
11/4”	42.2	3.56	STD	40	8.27	3.39
11/2”	48.3	3.68	STD	40	8.27	4.05
2”	60.3	3.91	STD	40	15.86	5.44
21/2”	73	5.16	STD	40	17.24	8.63
3”	88.9	5.49	STD	40	15.31	11.29
4”	114.3	6.02	STD	40	13.10	16.07

GB/T3092-93 GB/T3091-93

Nominal Diameter

Outside Diameter（mm）

Wall thkckness（mm）

Wenght

（kg/m）

mm

In

Nominal Diameter

Allowed tolerance

Nominal Diameter

Allowed tolerance

15

1/2

21.3

±0.5mm

2.75

+12%

1.26

20

3/4

26.8

2.75

1.63

25

1

33.5

3.25

2.42

32

1－1/4

42.3

3.25

3.13

40

1－1/2

48

3.5

3.83

50

2

60

±1%

3.5

-15%

4.88

65

2－1/2

75.5

3.75

6.64

80

3

88.5

4

8.34

100

4

114.0

4

10.85

125

5

140.0

4

13.42

150

6

165.0

4.5

17.81

BS31-1940

Nominal Dia.(in)

Outside Diameter(mm)

Wall Thickness

Nominal Weight Screwed Without Coupler

Min

Std

Max

Nominal

Minmum

mm

mm

Kg/m

1/2

12.43

12.70

12.73

1.42

1.32

0.40

3/4

18.76

15.05

19.08

1.63

1.52

0.69

1

25.11

25.40

25.43

1.63

1.52

0.95

1-1/4

31.46

31.75

31.78

1.63

1.52

1.21

1-1/2

37.80

38.10

38.13

1.83

1.73

1.64

2

50.50

50.80

50.83

2.03

1.93

2.44

2-1/2

63.20

63.50

63.53

2.03

1.93

3.03