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HFW

Brief Introduction:

HFW Pipe (High Frequency Electric Weld) is produced by continuously forming coiled hot rolled strip into a tube and welding the longitudinal seam using high-frequency electric resistance welding.

HFW Pipe has following advantages:

Smooth surfaces: Hot-rolled strip steel is continuously cold formed into smooth-surface, uniform wall pipe for superior coatability and flow characteristics.

Stronger, lighter walls: Higher strength, lighter gauge steel strip is fused by high frequency electric resistance welders into high toughness steel pipe that meets exacting tolerances and strength specifications.

Uniform dimensions and quality: HFW steel pipe products have uniform wall thicknesses made from hot-rolled steel strip. 

Nominal Size

Outside Diameter

Wall Thickness

Plain-end Weight

inch

mm

inch

mm

lb/ft

kg/m

4   

4.500

114.3

0.156

3.96

7.24

10.88

4.500

114.3

0.172

4.37

7.96

11.92

4.500

114.3

0.188

4.78

8.67

12.96

4.500

114.3

0.203

5.16

9.32

13.99

4.500

114.3

0.219

5.56

10.02

15.01

4.500

114.3

0.237

6.02

10.8

16.02

4.500

114.3

0.250

6.35

11.36

17.03

4.500

114.3

0.281

7.14

12.67

18.77

4.500

114.3

0.312

7.92

13.97

20.79

4.500

114.3

0.337

8.56

15

22.32

4.500

114.3

0.438

11.13

19.02

28.31

4.500

114.3

0.531

13.49

22.53

33.53

4.500

114.3

0.674

17.12

27.57

41.03

5

5.563

141.3

0.083

2.11

4.86

7.24

5.563

141.3

0.125

3.18

7.27

10.81

5.563

141.3

0.156

3.96

9.02

13.42

5.563

141.3

0.188

4.78

10.8

16.08

5.563

141.3

0.219

5.56

12.51

18.62

5.563

141.3

0.258

6.55

14.63

21.78

5.563

141.3

0.281

7.14

15.87

23.61

5.563

141.3

0.312

7.92

17.51

26.06

5.563

141.3

0.344

8.74

19.19

28.56

5.563

141.3

0.375

9.53

20.8

30.95

5.563

141.3

0.500

12.70

27.06

40.28

5.563

141.3

0.625

15.88

32.99

49.10

5.563

141.3

0.750

19.05

38.59

57.43

6

6.625

168.3

0.083

2.11

5.8

8.64

6.625

168.3

0.109

2.77

7.59

11.30

6.625

168.3

0.125

3.18

8.69

12.93

6.625

168.3

0.141

3.58

9.77

14.55

6.625

168.3

0.156

3.96

10.79

16.06

6.625

168.3

0.172

4.37

11.87

17.66

6.625

168.3

0.188

4.78

12.94

19.26

6.625

168.3

0.203

5.16

13.94

20.74

6.625

168.3

0.219

5.56

15

22.32

6.625

168.3

0.250

6.35

17.04

25.36

6.625

168.3

0.280

7.11

18.99

28.27

6.625

168.3

0.312

7.92

21.06

31.34

6.625

168.3

0.344

8.74

23.1

34.38

6.625

168.3

0.375

9.53

25.05

37.29

6.625

168.3

0.432

10.97

28.6

42.57

6.625

168.3

0.500

12.70

32.74

48.73

6.625

168.3

0.562

14.27

36.43

54.22

6.625

168.3

0.625

15.88

40.09

59.67

6.625

168.3

0.719

18.26

45.39

67.57

6.625

168.3

0.750

19.05

47.1

70.11

6.625

168.3

0.864

21.95

53.21

79.20

6.625

168.3

0.875

22.23

53.78

80.06

8

8.625

219.1

0.125

3.18

11.36

16.91

8.625

219.1

0.156

3.96

14.12

21.02

8.625

219.1

0.188

4.78

16.96

25.24

8.625

219.1

0.203

5.16

18.28

27.20

8.625

219.1

0.219

5.56

19.68

29.29

8.625

219.1

0.250

6.35

22.38

33.31

8.625

219.1

0.277

7.04

24.72

36.79

8.625

219.1

0.312

7.92

27.73

41.27

8.625

219.1

0.322

8.18

28.58

42.54

8.625

219.1

0.344

8.74

30.45

45.33

8.625

219.1

0.375

9.53

33.07

49.23

8.625

219.1

0.438

11.13

38.33

57.06

8.625

219.1

0.500

12.70

43.43

64.64

8.625

219.1

0.562

14.27

48.44

72.10

8.625

219.1

0.625

15.88

53.45

79.56

8.625

219.1

0.719

18.26

60.77

90.45

8.625

219.1

0.750

19.05

63.14

93.98

8.625

219.1

0.812

20.62

67.82

100.95

8.625

219.1

0.875

22.23

72.49

107.90

8.625

219.1

1.000

25.40

81.51

121.33

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