Forming Technologies
Cold Pressing
Taking advantage of the characteristics of plastic deformation of metal, the microscopic convex peaks on the surface of the workpiece are flattened by applying pressure, thereby reducing the surface roughness. High pressure is applied in the mold cavity to make a compact molded blank. Including surface rolling, surface extrusion processing, etc. Suitable for polycarbonate, polypropylene and other materials. By cold pressing processing, the tensile strength and elastic modulus of the material can be improved.
Comprehensive Size Ranges
Seamless STEEL PIPES: DN15-DN600 (½"-24")
Here are the common detailed model sizes for seamless steel pipes DN15 to DN600, with outer diameter and wall thickness in mm (mm):
| DN15 | Outer diameter: 21.3 | Wall thickness: 2.8, 3.0, 3.2, 3.5, etc. |
| DN20 | Outer diameter: 26.9 | Wall thickness: 2.8, 3.0, 3.5, 4.0, etc. |
| DN25 | Outer diameter: 33.7 | Wall thickness: 3.2, 3.5, 4.0, 4.5, etc. |
| DN32 | Outer diameter: 42.4 | Wall thickness: 3.5, 4.0, 4.5, 5.0, etc. |
| DN40 | Outer diameter: 48.3 | Wall thickness: 3.5, 4.0, 4.5, 5.0, etc. |
| DN50 | Outer diameter: 60.3 | Wall thickness: 3.8, 4.0, 4.5, 5.0, etc. |
| DN65 | Outer diameter: 76.1 | Wall thickness: 4.0, 4.5, 5.0, 6.0, etc. |
| DN80 | Outer diameter: 88.9 | Wall thickness: 4.0, 4.5, 5.0, 6.0, etc. |
| DN100 | Outer diameter: 114.3 | Wall thickness: 4.0, 4.5, 5.0, 6.0, etc. |
| DN125 | Outer diameter: 141.3 | Wall thickness: 4.5, 5.0, 6.0, 8.0, etc. |
| DN150 | Outer diameter: 168.3 | Wall thickness: 4.5, 5.0, 6.0, 8.0, etc. |
| DN200 | Outer diameter: 219.1 | Wall thickness: 6.0, 8.0, 10.0, 12.0, etc. |
| DN250 | Outer diameter: 273.0 | Wall thickness: 6.0, 8.0, 10.0, 12.0, etc. |
| DN300 | Outer diameter: 323.9 | Wall thickness: 8.0, 10.0, 12.0, 14.0, etc. |
| DN350 | Outer diameter: 355.6 | Wall thickness: 8.0, 10.0, 12.0, 14.0, etc. |
| DN400 | Outer diameter: 406.4 | Wall thickness: 8.0, 10.0, 12.0, 14.0, etc. |
| DN450 | Outer diameter: 457.0 | Wall thickness: 8.0, 10.0, 12.0, 14.0, etc. |
| DN500 | Outer diameter: 508.0 | Wall thickness: 10.0, 12.0, 14.0, 16.0, etc. |
| DN600 | Outer diameter: 610.0 | Wall thickness: 10.0, 12.0, 14.0, 16.0, etc. |
The actual size of seamless steel pipes may vary depending on the manufacturer and specific standards. In addition, there are some non-standard sizes available for special needs.
Welded Steel Pipes: DN15-DN1200 (½"-48")
Here are the detailed sizes of common models for welded steel pipes DN15 to DN1200:
|
Nominal diameter (DN) |
Outer diameter (mm) |
|
DN15 |
21.3 |
|
DN20 |
26.9 |
|
DN25 |
33.7 |
|
DN32 |
42.4 |
|
DN40 |
48.3 |
|
DN50 |
60.3 |
|
DN65 |
76.1 |
|
DN80 |
88.9 |
|
DN100 |
114.3 |
|
DN125 |
139.7 |
|
DN150 |
168.3 |
|
DN200 |
219.1 |
|
DN250 |
273 |
|
DN300 |
323.9 |
|
DN350 |
355.6 |
|
DN400 |
406.4 |
|
DN450 |
457 |
|
DN500 |
508 |
|
DN600 |
610 |
|
DN700 |
711 |
|
DN800 |
813 |
|
DN900 |
914 |
|
DN1000 |
1016 |
|
DN1200 |
1219 |
The wall thickness of welded steel pipes will vary according to different usage requirements and standards. For example, in the welded steel pipe for low-pressure fluid transport (GB/T 3091-2008), the wall thickness of the DN15 steel pipe is 2.8mm, etc. If you need more accurate size information, you can contact us directly to customize
Supports SCH5S-XXS pressure ratings, ideal for oil/gas pipelines and cryogenic applications.
Fitting Manufacturing standard
ASTM, AISI, JIS, DIN, EN
Materials
Austenitic SS: 304/304L, 316/316L, 321
Duplex SS: S31803, S32205, S32750 (Chloride Resistance)
Super Alloys: 904L, 254SMO, 317L (Extreme pH Environments)
Nickel Alloy: N06625, N08825, etc.
Compliant with ASTM/AISI/UNS standards (1.4301, 1.4401, etc.).
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