Duplex Steel Welded Pipe
Duplex Steel Welded Pipe
Duplex steel welded pipes are pipes made from duplex stainless steel (DSS) with a welded seam. They combine high strength, excellent corrosion resistance, and cost-effectiveness compared to seamless pipes in certain applications.They are used in a variety of applications including pipelines, pressure vessels, boilers, tanks, and condensers. Duplex steel welded pipes are also used in the construction industry for a variety of purposes such as structural frames, piping systems, and for other general fabrication purposes.

Grades Comparison Table
Chromium (Cr)
16–18%
Nickel (Ni)
3.5–5.5%
Manganese (Mn)
5.5–7.5%
Carbon (C)
0.08%
Molybdenum (Mo)
0%
Chromium (Cr)
18–20%
Nickel (Ni)
8–10.5%
Manganese (Mn)
≤2%
Carbon (C)
0.08%
Molybdenum (Mo)
0%
Chromium (Cr)
18–20%
Nickel (Ni)
8–12%
Manganese (Mn)
≤2%
Carbon (C)
0.03%
Molybdenum (Mo)
0%
Chromium (Cr)
16–18%
Nickel (Ni)
10-14%
Manganese (Mn)
≤2%
Carbon (C)
0.08%
Molybdenum (Mo)
2–3%
Chromium (Cr)
16–18%
Nickel (Ni)
10-14%
Manganese (Mn)
≤2%
Carbon (C)
0.03%
Molybdenum (Mo)
2-3%
Common Applications
- Chemical processing, transport and storage
- Oil and gas exploration and offshore rigs
- Oil and gas refining
- Marine environments
- Pollution control equipment
- Pulp & paper manufacturing