Seamless steel pipes are widely used in various industries due to their durability and strength. In China, the price of seamless steel pipes is influenced by several factors. Understanding these factors can help businesses and consumers make informed decisions when purchasing seamless steel pipes.
One of the primary factors affecting the price of seamless steel pipes in China is the cost of raw materials. The price of steel, which is the main component of seamless pipes, fluctuates based on supply and demand. Factors such as global economic conditions, production capacity, and trade policies can impact the cost of steel. When the cost of raw materials increases, it directly affects the price of seamless steel pipes.
Another factor that affects the price of seamless steel pipes is the production process. Seamless pipes are manufactured through a complex process that involves heating and shaping steel billets. The cost of equipment, energy, and labor required for this process can vary depending on the efficiency and technology used by manufacturers. Companies that invest in advanced production techniques may be able to offer competitive prices for seamless steel pipes.
Transportation costs also play a significant role in determining the price of seamless steel pipes in China. China is a vast country with a large domestic market, and the cost of transporting goods from manufacturing facilities to customers can vary greatly. Factors such as distance, mode of transportation, and fuel prices can impact transportation costs. Manufacturers located closer to major transportation hubs or ports may have a competitive advantage in terms of pricing.
Labels a
Calculated Mass c
Nominal Linear Mass T& C b,c
Wall Thick- ness
em, Mass Gain or Loss Due to End Finishing d
Outside Diameter
Inside Diameter
Drift Diameter
Plain- end
kg
Round Thread
Buttress Thread
wpe
D
kg/m
t
D
mm
kg/m
Short
Long
RC
SCC
mm
mm
mm
1
2
3
4
5
6
7
8
9
10
11
12
13 3/8
48
339.72
71.43
8.38
322.96
318.99
68.48
15.04
—
— 17.91
—
13 3/8
54.5
339.72
81.1
9.65
320.42
316.45
78.55
13.88
—
16.44
—
13 3/8
61
339.72
90.78
10.92
317.88
313.91
88.55
12.74
—
14.97
—
13 3/8
68
339.72
101.19
12.19
315.34
311.37
98.46
11.61
—
14.97
—
13 3/8
68
339.72
101.19
12.19
315.34
311.37
98.46
11.67 f
—
14.33
—
13 3/8
72
339.72
107.15
13.06
313.6
311.15 e
105.21
10.98
—
13.98
—
13 3/8
72
339.72
107.15
13.06
313.6
311.15 e 309.63 309.63
105.21
10.91 f
—
14.33
—
13 3/8
72
339.72
107.15
13.06
313.6
105.21
10.98
—
13.98
—
13 3/8
72
339.72
107.15
13.06
313.6
105.21
10.91 e
—
—
16
65
406.4
96.73
9.53
387.4
382.57
96.73
18.59
—
— 20.13
—
16
75
406.4
111.61
11.13
384.1
379.37
108.49
16.66
—
18.11
—
16
84
406.4
125.01
12.57
381.3
376.48
122.09
14.92
—
—
—
16
109
406.4
162.21
16.66
373.1
368.3
160.13
—
—
—
18 5/8
87.5
473.08
130.21
11.05
450.98
446.22
125.91
33.6
—
39.25
—
20
94
508
139.89
11.13
485.7
480.97
136.38
20.5
27.11
24.78
—
20
94
508
139.89
11.13
485.7
480.97
136.38
20.61
27.26 g 24.27 17.84
24.78
—
20
106.5
508
158.49
12.7
482.6
477.82
155.13
18.22
22
—
20
133
508
197.93
16.13
475.7
470.97
195.66
13.03
16.02
—
NOTE See also Figures D.1, D.2, and D.3.
a Labels are for information and assistance in ordering.
b Nominal linear masses, threaded and coupled (Column 4) are shown for information only.
c The densities of martensitic chromium steels ( L80 Types 9Cr and 13Cr) are less than those of carbon steels; The masses shown are therefore not accurate for martensitic chromium steels; A mass correction factor of 0.989 shall be used.
d Mass gain or loss due to end finishing; See 8.5.
e Drift diameter for most common bit size; This drift diameter shall be specified in the purchase agreement and marked on the pipe; See 8.10 for drift requirements.
Number and Color of Bands for Product a with Length³ 1.8 m
Color(s) for Couplings
Entire Coupling
Band(s) b, c
1
2
3
4
5
H40
—
None or black band at the manufacturer’s option
None
Same as for pipe
J55 Tubing
—
One bright green
Bright green
None
J55 Casing
—
One bright green
Bright green
One white
K55
—
Two bright green
Bright green
None
N80
1
One red
Red
None
N80
Q
One red, one bright green
Red
Green
R95
—
One brown
Brown
None
L80
1
One red, one brown
Red
One brown
L80
9Cr
One red, one brown, two yellow
None
Two yellow
L80
13Cr
One red, one brown, one yellow
None
One yellow
C90
1
One purple
Purple
None
T95
1
One silver
Silver
None
C110
—
One white, two brown
White
Two brown
P110
—
One white
White
None
Q125
1
One orange
Orange
None
a In the case of coupling Material, unless otherwise specified in the purchase agreement, the manufacturer’s internal requirements shall govern.
b Special clearance couplings shall also have a black band.
c Seal-ring couplings shall also have a blue band.
Quality is another crucial factor that affects the price of seamless steel pipes. High-quality seamless pipes are more durable and have better performance, making them more desirable for various applications. Manufacturers that invest in quality control measures and adhere to international standards may charge a premium for their products. However, it is essential to consider the long-term benefits of investing in high-quality seamless steel pipes, as they can result in cost savings and improved efficiency in the long run.
NPS
OD
WT
INCH
MM
SCH10
SCH20
SCH30
STD
SCH40
SCH60
XS
SCH80
SCH100
SCH120
SCH140
SCH160
1/2″
21.3
2.11
2.41
2.77
2.77
3.73
3.73
4.78
3/4″
26.7
2.11
2.41
2.87
2.87
3.91
3.91
5.56
1″
33.4
2.77
2.9
3.38
3.38
4.55
4.55
6.35
1.1/4″
42.2
2.77
2.97
3.56
3.56
4.85
4.85
6.35
1.1/2″
48.3
2.77
3.18
3.68
3.68
5.08
5.08
7.14
2″
60.3
2.77
3.18
3.91
3.91
5.54
5.54
8.74
2.1/2″
73
3.05
4.78
5.16
5.16
7.01
7.01
9.53
3″
88.9
3.05
4.78
5.49
5.49
7.62
7.62
11.13
3.1/2″
101.6
3.05
4.78
5.74
5.74
8.08
8.08
4″
114.3
3.05
4.78
6.02
6.02
8.56
8.56
11.13
13.49
5″
141.3
3.4
6.55
6.55
9.53
9.53
12.7
15.88
6″
168.3
3.4
7.11
7.11
10.97
10.97
14.27
18.26
8″
219.1
3.76
6.35
7.04
8.18
8.18
10.31
12.7
12.7
15.09
18.26
20.62
23.01
10″
273
4.19
6.35
7.8
9.27
9.27
12.7
12.7
15.09
18.26
21.44
25.4
28.58
12″
323.8
4.57
6.35
8.38
9.53
10.31
14.27
12.7
17.48
21.44
25.4
28.58
33.32
14″
355.6
6.35
7.92
9.53
9.53
11.13
15.09
12.7
19.05
23.83
27.79
31.75
35.71
16″
406.4
6.35
7.92
9.53
9.53
12.7
16.66
12.7
21.44
26.19
30.96
36.53
40.19
18″
457.2
6.35
7.92
11.13
9.53
14.27
19.05
12.7
23.83
39.36
34.93
39.67
45.24
20″
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
22″
558.8
6.35
9.53
12.7
9.53
22.23
12.7
28.58
34.93
41.28
47.63
53.98
24″
609.6
6.35
9.53
14.27
9.53
17.48
24.61
12.7
30.96
38.89
46.02
52.37
59.54
26″
660.4
7.92
12.7
9.53
12.7
28″
711.2
7.92
12.7
15.88
9.53
12.7
Market demand and competition also influence the price of seamless steel pipes in China. When there is high demand for seamless pipes, manufacturers may increase their prices to maximize profits. On the other hand, intense competition among manufacturers can lead to price wars, driving down the price of seamless steel pipes. It is crucial for buyers to consider market dynamics and compare prices from different suppliers to ensure they are getting the best value for their money.
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