The hot expanded seamless steel pipe is relatively low density but the contraction of the strong seamless steel pipe can be referred to as thermal expansion. The roughing finishing process for expanding the diameter of a pipe by a cross-rolling method or a drawing method. Steel pipe thickening in a short period can produce non-standard and special types of seamless tubes with low-cost and high production efficiency, the current international developments in the field of tube rolling.
<template class="visibility">
What is hot expanded seamless pipe
The hot expanded seamless steel pipe is relatively low density but the contraction of the strong seamless steel pipe can be referred to as thermal expansion. The roughing finishing process for expanding the diameter of a pipe by a cross-rolling method or a drawing method. Steel pipe thickening in a short period can produce non-standard and special types of seamless tubes with low-cost and high production efficiency, the current international developments in the field of tube rolling.
</template>
Size of hot expanded seamless pipe
Nominal size
Outside Diameter
Nominal Wall Thickness (mm)
DN
NPS
OD(MM)
SCH
SCH
SCH
STD
SCH
SCH
XS
SCH
SCH
SCH
SCH
SCH
XXS
10
20
30
40
60
80
100
120
140
160
200 250 300
8 10 12
219.1 273.1 323.9
3.76 4.19 4.57
6.35 6.35 6.35
7.04 7.80 8.38
8.18 9.27 9.53
8.18 9.27 10.31
10.31 12.70 14.27
12.70 12.70 12.70
12.70 15.09 17.48
15.09 18.26 21.44
18.26 21.44 25.40
20.62 25.40 28.58
23.01 28.58 33.32
22.23 25.40 25.40
350 400 450
14 16 18
355.6 406.4 457.2
6.35 6.35 6.35
7.92 7.92 7.92
9.53 9.53 11.13
9.53 9.53 9.53
11.13 12.70 14.27
15.09 16.66 19.05
12.70 12.70 12.70
19.05 21.44 23.83
23.83 26.19 29.36
27.79 30.96 34.93
31.75 36.53 39.67
35.71 40.49 45.24
— —
500 550 600
20 22 24
508 559 610
6.35 6.35 6.35
9.53 9.53 9.53
12.70 12.70 14.27
9.53 9.53 9.53
15.09 — 17.48
20.62 22.23 24.61
12.7
26.19 28.58 30.96
32.54 34.93 38.89
38.10 41.28 46.02
44.45 47.63 52.37
50.01 53.98 59.54
— —
12.7
12.7
500 550 600
20 22 24
508 559 610
6.35 6.35 6.35
9.53 9.53 9.53
12.70 12.70 14.27
9.53 9.53 9.53
15.09 — 17.48
20.62 22.23 24.61
12.70 12.70 12.70
26.19 28.58 30.96
32.54 34.93 38.89
38.10 41.28 46.02
44.45 47.63 52.37
50.01 53.98 59.54
— —
660 700 750
26 28 30
660 711 762
7.92 7.92 7.92
12.70 12.70 12.70
— 15.88 15.88
9.53 9.53 9.53
— —
— —
12.70 12.70 12.70
— —
— —
— —
— —
— —
— —
800 850 900
32 34 36
813 864 914
7.92 7.92 7.92
12.70 12.70 12.70
15.88 15.88 15.88
9.53 9.53 9.53
17.48 17.48 19.05
— —
12.70 12.70 12.70
— —
— —
— —
— —
— —
— —
<template class="visibility">
Size of hot expanded seamless pipe
Nominal size
Outside Diameter
Nominal Wall Thickness (mm)
DN
NPS
OD(MM)
SCH
SCH
SCH
STD
SCH
SCH
XS
SCH
SCH
SCH
SCH
SCH
XXS
10
20
30
40
60
80
100
120
140
160
200 250 300
8 10 12
219.1 273.1 323.9
3.76 4.19 4.57
6.35 6.35 6.35
7.04 7.80 8.38
8.18 9.27 9.53
8.18 9.27 10.31
10.31 12.70 14.27
12.70 12.70 12.70
12.70 15.09 17.48
15.09 18.26 21.44
18.26 21.44 25.40
20.62 25.40 28.58
23.01 28.58 33.32
22.23 25.40 25.40
350 400 450
14 16 18
355.6 406.4 457.2
6.35 6.35 6.35
7.92 7.92 7.92
9.53 9.53 11.13
9.53 9.53 9.53
11.13 12.70 14.27
15.09 16.66 19.05
12.70 12.70 12.70
19.05 21.44 23.83
23.83 26.19 29.36
27.79 30.96 34.93
31.75 36.53 39.67
35.71 40.49 45.24
— —
500 550 600
20 22 24
508 559 610
6.35 6.35 6.35
9.53 9.53 9.53
12.70 12.70 14.27
9.53 9.53 9.53
15.09 — 17.48
20.62 22.23 24.61
12.7
26.19 28.58 30.96
32.54 34.93 38.89
38.10 41.28 46.02
44.45 47.63 52.37
50.01 53.98 59.54
— —
12.7
12.7
500 550 600
20 22 24
508 559 610
6.35 6.35 6.35
9.53 9.53 9.53
12.70 12.70 14.27
9.53 9.53 9.53
15.09 — 17.48
20.62 22.23 24.61
12.70 12.70 12.70
26.19 28.58 30.96
32.54 34.93 38.89
38.10 41.28 46.02
44.45 47.63 52.37
50.01 53.98 59.54
— —
660 700 750
26 28 30
660 711 762
7.92 7.92 7.92
12.70 12.70 12.70
— 15.88 15.88
9.53 9.53 9.53
— —
— —
12.70 12.70 12.70
— —
— —
— —
— —
— —
— —
800 850 900
32 34 36
813 864 914
7.92 7.92 7.92
12.70 12.70 12.70
15.88 15.88 15.88
9.53 9.53 9.53
17.48 17.48 19.05
— —
12.70 12.70 12.70
— —
— —
— —
— —
— —
— —
</template>
Manufacturing process of hot expanded seamless pipe
Circular hacksaw steel------furnace burning------round steel perforation------tube billet hot rolling------steel pipe straightening------steel pipe saw Head------Packing of finished steel pipe
<template class="visibility">
Manufacturing process of hot expanded seamless pipe
Circular hacksaw steel------furnace burning------round steel perforation------tube billet hot rolling------steel pipe straightening------steel pipe saw Head------Packing of finished steel pipe
</template>
Standard of hot expanded seamless pipe
Outside Diameter (mm) /
SCH
SCH
SCH
STD
SCH
SCH
XS
SCH
SCH
SCH
SCH
SCH
Wall Thickness (mm)
10
20
30
40
60
80
100
120
140
160
457
6.35
7.92
11.13
9.53
14.27
19.05
12.7
23.88
29.36
34.93
39.67
45.24
508
6.35
9.53
12.7
9.53
15.09
20.62
12.7
26.19
32.54
38.1
44.45
50.01
559
6.35
9.53
12.7
9.53
22.23
12.7
28.58
34.93
41.28
47.63
53.98
610
6.35
9.53
14.27
9.53
17.48
24.61
12.7
30.96
38.39
46.02
52.37
59.54
660
7.92
12.7
9.53
12.7
711
7.92
12.7
15.88
9.53
12.7
762
7.92
12.7
15.88
9.53
12.7
Remark: The above standard and specifications are just for reference, we can also produce the customized products according to customer’s requests.
<template class="visibility">
Standard of hot expanded seamless pipe
Outside Diameter (mm) /
SCH
SCH
SCH
STD
SCH
SCH
XS
SCH
SCH
SCH
SCH
SCH
Wall Thickness (mm)
10
20
30
40
60
80
100
120
140
160
457
6.35
7.92
11.13
9.53
14.27
19.05
12.7
23.88
29.36
34.93
39.67
45.24
508
6.35
9.53
12.7
9.53
15.09
20.62
12.7
26.19
32.54
38.1
44.45
50.01
559
6.35
9.53
12.7
9.53
22.23
12.7
28.58
34.93
41.28
47.63
53.98
610
6.35
9.53
14.27
9.53
17.48
24.61
12.7
30.96
38.39
46.02
52.37
59.54
660
7.92
12.7
9.53
12.7
711
7.92
12.7
15.88
9.53
12.7
762
7.92
12.7
15.88
9.53
12.7
Remark: The above standard and specifications are just for reference, we can also produce the customized products according to customer’s requests.
Providing professional one-stop procurement service for customers with excellent quality, competitive price, convenient transportation, and timely delivery.
22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC:410116 sales@threewaysteel.com 0086-0731-8873-9521 0086-198-7313-7990
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