Duplex stainless steel welded pipe
Duplex stainless steel welded pipes combine the superior properties of austenitic and ferritic stainless steels, offering excellent corrosion resistance, high strength, and good weldability. They are widely used in marine engineering, petrochemical industries, natural gas transportation, desulfurization and denitrification systems, pressure vessels, and other applications requiring high strength and corrosion resistance.
Duplex Stainless Steel Welded Pipe
We provide duplex stainless steel welded pipes that comply with international standards and maintain strict manufacturing controls to ensure outstanding mechanical performance and durability. Below is the duplex stainless steel welded pipe specification table, detailing the product’s size range.
Seamless and Welded Ferritic/Austenitic Stainless Steel Nominal Tubes SA-790/SA-790M
|
NPS |
Outer diameter | Nominal wall thickness | ||||||||
|
in |
mm |
Wall thickness 5S | Wall thickness 10S | Wall thickness 40S | Wall thickness 80S | |||||
| in | mm | in | mm | in | mm | in | mm | |||
| 1/8 | 0.405 | 10.29 |
… |
… |
0.049 | 1.24 | 0.068 | 1.73 | 0.095 | 2.41 |
| 1/4 | 0.540 | 13.72 | … | … | 0.065 | 1.65 | 0.088 | 2.24 | 0.119 | 3.02 |
| 3/8 | 0.675 | 17.15 | … | … | 0.065 | 1.65 | 0.091 | 2.31 | 0.126 | 3.20 |
| 1/2 | 0.840 | 21.34 | 0.065 | 1.65 | 0.083 | 2.11 | 0.109 | 2.77 | 0.147 | 3.73 |
| 3/4 | 1.050 | 26.67 | 0.065 | 1.65 | 0.083 | 2.11 | 0.113 | 2.87 | 0.154 | 3.91 |
| 1.0 | 1.315 | 33.40 | 0.065 | 1.65 | 0.109 | 2.77 | 0.133 | 3.38 | 0.179 | 4.55 |
| 1-1/4 | 1.660 | 42.16 | 0.0065 | 1.65 | 0.109 | 2.77 | 0.140 | 3.56 | 0.191 | 4.85 |
| 1-1/2 | 1.900 | 48.26 | 0.065 | 1.65 | 0.109 | 2.77 | 0.145 | 3.68 | 0.200 | 5.08 |
| 2 | 2.375 | 60.33 | 0.065 | 1.65 | 0.109 | 2.77 | 0.154 | 3.91 | 0.218 | 5.54 |
| 2-1/2 | 2.875 | 73.03 | 0.083 | 2.11 | 0.120 | 3.05 | 0.203 | 5.16 | 0.276 | 7.01 |
| 3 | 3.500 | 88.90 | 0.083 | 2.11 | 0.120 | 3.05 | 0.216 | 5.49 | 0.300 | 7.62 |
| 3-1/2 | 4.000 | 101.60 | 0.083 | 2.11 | 0.120 | 3.05 | 0.226 | 5.74 | 0.318 | 8.08 |
| 4 | 4.500 | 114.30 | 0.083 | 2.11 | 0.120 | 3.05 | 0.237 | 6.02 | 0.337 | 8.56 |
| 5 | 5.563 | 141.30 | 0.109 | 2.77 | 0.134 | 3.40 | 0.258 | 6.55 | 0.375 | 9.52 |
| 6 | 6.625 | 168.28 | 0.109 | 2.77 | 0.134 | 3.40 | 0.280 | 7.11 | 0.432 | 10.97 |
| 8 | 8.625 | 219.08 | 0.109 | 2.77 | 0.148 | 3.76 | 0.322 | 8.18 | 0.500 | 12.70 |
| 10 | 10.750 | 273.05 | 0.134 | 3.40 | 0.165 | 4.19 | 0.365 | 9.27 | 0.500 | 12.70 |
| 12 | 12.750 | 323.85 | 0.156 | 3.96 | 0.180 | 4.57 | 0.375 | 9.52 | 0.500 | 12.70 |
| 14 | 14.000 | 355.60 | 0.156 | 3.96 | 0.188 | 4.78 | … | … | … | … |
| 16 | 16.000 | 406.40 | 0.165 | 4.19 | 0.188 | 4.78 | … | … | … | … |
| 18 | 18.000 | 457.20 | 0.165 | 4.19 | 0.188 | 4.78 | … | … | … | … · |
| 20 | 20.000 | 508.00 | 0.188 | 4.78 | 0.218 | 5.54 | … · | … | … | … |
| 22 | 22.000 | 558.80 | 0.188 | 4.78 | 0.218 | 5.54 | … | … | … | … |
| 24 | 24.000 | 609.60 | 0.218 | 5.54 | 0.250 | 6.35 | … | … | … · | … · |
| 30 | 30.000 | 762.00 | 0.250 | 6.35 | 0.312 | 7.92 | … | … | … | … |