Duplex Stainless Steel Pipe

Duplex stainless steel offers excellent resistant to corrosion and very high mechanical strength. The high corrosion resistance of duplex stainless steel ensures significantly more uptime than carbon steels and conventional stainless steels, while the mechanical strength allows for lighter constructions, more compact system design and less welding.

We can produce and deliver nearly any duplex material requirement in pipe, tube or fittings.

Chemical Composition
Grade Chemical Composition
C (max) Si (max) Mn (max) P (max) S (max) Cr Ni Mo N Cu
S32750 0.030 0.8 1.2 0.030 0.015 24.0-26.0 6.8-8.0 3.0-5.0 0.24-0.32 0.5 max
S13803 0.030 1.0 2.0 0.030 0.020 21.0-23.0 4.50-6.50 2.50-3.50 0.08-0.20

Physical Propertie
Grade Physical Propertie
Y.S. MPa (min) T.S. MPa (min) Elongation % Hardness HRC
S32750 550 800 15 31
S13803 450 620 25 31

Size range for duplex pipes
W.T. 1.0 1.2 1.5 1.65 2.0 2.11 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0
15
16
18
19.05
22
25.4
31.8
35
38.1
42
45
50.8
55
60
65
70
75
80
90
101.6
114.3
121
127
133
141.3
159
168.3
Note: For sizes other than given, please check with our office for further confirmation.