About Us
Eastern Steel Manufacturing Co.,Ltd is a leading manufacturer and distributor of seamless steel pipe, welded steel pipe, OCTG products and fittings. We supply first-step processing, semi-finished parts and finished parts to help our clients meet fabrication requirements beyond their capacity or to improve operations by moving forward the pre-production processing.
News
In this column you can find the steel pipe related articles you need, including industry trends, product standards and materials, and some technical guidelines.
Services
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Facility
Eastern Steel Manufacturing Co.,Ltd not only improve product production and sales services, but also provide additional value-added services. As long as you need, we can complete your specific needs together.
Projects
Many years of large-scale project experience in various fields（Oil & Gas, Construction, Power Energy, Marine & Offshore, Water Treatment, Exploration & Drilling Services, Pipeline & Petrochemical etc.）, professional project team is responsible from receiving until the end of the project.
Hot-rolled seamless steel pipe is a commonly used steel pipe material, widely used in petroleum, chemical, manufacturing, electricity, construction and other fields. It has good mechanical properties and corrosion resistance, and can meet the needs of various projects. The specifications of hot-rolled seamless steel pipes refer to its parameters such as diameter, wall thickness and length. The following will introduce its specifications in detail.
Diameter specifications
The diameter specifications of hot-rolled seamless steel pipes are usually in millimeters (mm). Common diameters are 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, etc.
The larger the diameter, the stronger the pressure-bearing capacity of the steel pipe. It is suitable for occasions with greater pressure, especially in the field of hydraulic tubes and boiler tubes. In engineering, the selection of diameter specifications should be determined according to specific usage requirements.
|
Specification |
Outer diameter(mm) |
Wall thickness(mm) |
|
Small diameter seamless steel pipe |
10-76 |
1.5-10 |
|
Medium diameter seamless steel pipe |
89-159 |
2.0-20 |
|
Large diameter seamless steel pipe |
168-351 |
3.0-30 |
Wall thickness specification
The wall thickness specification of hot-rolled seamless steel pipe is also in millimeters (mm). Common wall thicknesses are 1.5mm, 2mm, 3mm, 4mm, 5mm, etc.
The thicker the wall, the higher the strength of the steel pipe, which is suitable for occasions with greater pressure and load, such as heat exchanger tube. When selecting the wall thickness specification, the use environment and load requirements of the project should be considered.
|
Outer Diameter (mm) |
Wall Thickness(mm) |
|||||||||||
|
2.5 |
3.0 |
3.5 |
4.0 |
4.5 |
5.0 |
5.5 |
6.0 |
6.5 |
7.0 |
7.5 |
8.0 |
|
|
32 |
1.82 |
2.15 |
2.46 |
2.76 |
3.05 |
3.33 |
3.59 |
3.85 |
4.09 |
4.32 |
4.53 |
4.74 |
|
38 |
2.19 |
2.59 |
2.98 |
3.35 |
3.72 |
4.07 |
4.41 |
4.74 |
5.05 |
5.35 |
5.64 |
5.92 |
|
42 |
2.44 |
2.89 |
3.35 |
3.75 |
4.16 |
4.56 |
4.95 |
5.33 |
5.69 |
6.04 |
6.38 |
6.71 |
|
45 |
2.62 |
3.11 |
3.58 |
4.04 |
4.49 |
4.93 |
5.36 |
5.77 |
6.17 |
6.56 |
6.94 |
7.30 |
|
50 |
2.93 |
3.48 |
4.01 |
4.54 |
5.06 |
5.55 |
6.04 |
6.51 |
6.97 |
7.42 |
7.86 |
8.28 |
|
54 |
3.18 |
3.77 |
4.36 |
4.93 |
5.49 |
6.04 |
6.58 |
7.10 |
7.61 |
8.11 |
8.60 |
9.08 |
|
57 |
4.00 |
4.62 |
5.23 |
5.83 |
6.41 |
6.99 |
7.55 |
8.10 |
8.63 |
9.16 |
9.67 |
10.18 |
|
60 |
4.22 |
4.88 |
5.52 |
6.16 |
6.78 |
7.39 |
7.99 |
8.58 |
9.15 |
9.71 |
10.26 |
10.80 |
|
63.5 |
4.48 |
5.18 |
5.87 |
6.55 |
7.21 |
7.87 |
8.51 |
9.14 |
9.75 |
10.36 |
10.95 |
11.54 |
|
68 |
4.81 |
5.57 |
6.31 |
7.05 |
7.77 |
8.48 |
9.17 |
9.86 |
10.53 |
11.19 |
11.84 |
12.48 |
|
70 |
4.96 |
5.74 |
6.51 |
7.27 |
8.01 |
8.75 |
9.47 |
10.18 |
10.88 |
11.56 |
12.23 |
12.89 |
|
73 |
5.18 |
6.00 |
6.81 |
7.63 |
8.44 |
9.24 |
10.02 |
10.80 |
11.56 |
12.31 |
13.04 |
13.77 |
|
76 |
5.40 |
6.26 |
7.10 |
7.93 |
8.75 |
9.56 |
10.36 |
11.14 |
11.91 |
12.67 |
13.42 |
14.16 |
|
83 |
6.36 |
7.36 |
8.42 |
9.48 |
10.51 |
11.53 |
12.53 |
13.52 |
14.49 |
15.45 |
16.39 |
17.32 |
|
89 |
6.88 |
7.98 |
9.12 |
10.25 |
11.36 |
12.46 |
13.54 |
14.61 |
15.67 |
16.71 |
17.74 |
18.76 |
|
95 |
7.90 |
9.08 |
10.36 |
11.62 |
12.86 |
14.10 |
15.32 |
16.53 |
17.72 |
18.90 |
20.07 |
21.22 |
|
102 |
8.50 |
9.67 |
10.82 |
11.96 |
13.09 |
14.21 |
15.31 |
16.39 |
17.48 |
18.55 |
19.61 |
20.66 |
|
108 |
9.18 |
10.45 |
11.68 |
12.91 |
14.13 |
15.33 |
16.52 |
17.69 |
18.85 |
20.00 |
21.14 |
22.27 |
|
114 |
10.26 |
11.66 |
13.01 |
14.34 |
15.65 |
16.96 |
18.24 |
19.52 |
20.78 |
22.03 |
23.27 |
24.49 |
|
121 |
11.54 |
13.14 |
14.90 |
16.64 |
18.36 |
20.08 |
21.77 |
23.46 |
25.13 |
26.78 |
28.43 |
|
|
127 |
12.73 |
14.75 |
16.78 |
18.79 |
20.78 |
22.76 |
24.72 |
26.67 |
28.61 |
30.53 |
||
|
133 |
13.64 |
15.82 |
18.00 |
20.16 |
22.30 |
24.43 |
26.54 |
28.63 |
30.71 |
32.78 |
||
|
140 |
15.04 |
17.45 |
19.84 |
22.20 |
24.55 |
26.88 |
29.19 |
31.49 |
33.78 |
|||
|
146 |
16.37 |
18.13 |
20.72 |
23.26 |
25.77 |
28.27 |
30.76 |
33.23 |
35.68 |
|||
|
152 |
17.60 |
19.87 |
22.60 |
25.03 |
27.43 |
29.82 |
32.20 |
34.56 |
36.91 |
|||
Length specifications
The length specifications of hot-rolled seamless steel pipes are usually in meters (m), and common lengths are 6m, 9m, 12m, etc.
The length selection should be determined according to the specific project requirements. Generally, longer steel pipes are more suitable for large projects, while shorter steel pipes are more suitable for small projects or occasions that require cutting, such as pup joints processing.
|
Length(m) |
Outer diameter (mm) |
|
6 |
12.5 - 508 |
|
9 |
12.5 - 508 |
|
12 |
12.5 - 508 |
Common models and specifications
1. 20# hot-rolled seamless steel pipe
Outer diameter: 48-1219mm
Wall thickness: 4.0-80.0mm
2. 45# hot-rolled seamless steel pipe
Outer diameter: 48-1219mm
Wall thickness: 4.0-80.0mm
3. Q345B hot-rolled seamless steel pipe
Outer diameter: 48-1219mm
Wall thickness: 4.0-80.0mm
4. 42CrMo hot-rolled seamless steel pipe
Outer diameter: 48-1219mm
Wall thickness: 4.0-80.0mm
5. 27SiMn hot-rolled seamless steel pipe
Outer diameter: 48-1219mm
Wall thickness: 4.0-80.0mm
Summary
In general, the specifications of hot-rolled seamless steel pipe include parameters such as diameter, wall thickness, and length. When selecting hot-rolled seamless steel pipes, it is necessary to comprehensively consider factors such as actual use and the working environment of the pipeline to determine the appropriate model and specifications.
Read more: Seamless Steel Pipe Sizes
E-mail: sales@eastern-steels.com
