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Duplex heat exchanger tubes

Duplex heat exchanger tubes specification

Duplex heat exchanger tubes specification
Size range of duplex stainless steel heat exchanger tubes
  • OD: 1/2" - 4"
  • Thickness: 0.6-20mm
  • Length: Random Length
End
  • Beveled End
  • Plain End
Thickness
  • SCH 5 to SCH XXS
DSS seamless U tubes Processing Service
  • Welding
  • Punching
  • Cutting
  • Bending
  • Decoiling
Duplex heat exchanger tubes Manufacturing technique
  • Hot Rolled
  • Cold Rolled
Testing and inspection
  • 100% PMI tested
  • Tension test
  • Flaring test
  • Flange test
  • Hardness test
  • Reverse flattening test
Tolerance
  • ±1%

Duplex heat exchanger u tubes are manufactured in sizes ranging from 0.010” to 1.500” OD

Types of DSS heat exchanger tubes

Duplex SS shell and heat exchanger tubes

Duplex SS shell and heat exchanger tubes

Duplex steel u tubes

Duplex steel u tubes

Duplex tubes for heat exchanger

Duplex tubes for heat exchanger

DSS cold drawn heat exchanger tube

DSS cold drawn heat exchanger tube

Duplex steel seamless u tubes

Duplex steel seamless u tubes

DSS U Shaped Tube For Heat Exchanger

DSS U Shaped Tube For Heat Exchanger

Duplex SS shell and heat exchanger tubes chemical composition

C N Fe Si P Mn S Cr Mo Ni
1.0 0.03 0.03 2.0 0.02 3.0 - 3.5 0.14 - 0.2 4.5 - 6.5 22.0 - 23.0 Bal

Duplex steel u tubes mechanical properties

Elongation Yield Strength (0.2%Offset) Tensile Strength
15 % Psi - 80000 , MPa - 550 Psi - 116000 , MPa - 800

Duplex tubes for heat exchanger equivalent grade

STANDARD UNS WERKSTOFF NR.
Duplex 2205 S31803 / S32205 1.4462

DSS shell and heat exchanger tubes are effective in high temperature and pressure areas

Wall thickness of DSS cold drawn heat exchanger tube

OD Minimum WT
BWG 20 18 16 14 13 12 11 10 9 8 7 6 5
[mm] [inch] [mm] 0,89 1,24 1,65 2,11 2,41 2,77 3,05 3,40 3,76 4,19 4,57 5,16 5,59
12,70 1/2 lb/ft 0,190 0,256 0,327 0,399 0,441 0,487 0,519 0,555 0,586
.500 kg/m 0,283 0,381 0,487 0,594 0,657 0,725 0,773 0,826 0,873
15,88 5/8 lb/ft 0,242 0,328 0,423 0,521 0,581 0,647 0,696 0,752 0,804
.625 kg/m 0,360 0,488 0,630 0,776 0,865 0,964 1,036 1,120 1,198
19,05 3/4 lb/ft 0,400 0,518 0,643 0,720 0,807 0,872 0,948 1,021
.750 kg/m 0,595 0,771 0,957 1,072 1,202 1,299 1,412 1,521
22,23 7/8 lb/ft 0,472 0,614 0,767 0,864 0,973 1,056 1,158
.875 kg/m 0,702 0,913 1,141 1,285 1,448 1,571 1,722
25,40 1 lb/ft 0,543 0,709 0,887 0,998 1,128 1,225 1,342 1,456 1,587 1,696
1.000 kg/m 0,808 1,056 1,321 1,487 1,680 1,824 1,998 2,169 2,363 2,526
31,75 1 1/4 lb/ft 0,686 0,900 1,131 1,277 1,448 1,577 1,734 1,891 2,071 2,225 2,451 2,607
1.250 kg/m 1,022 1,340 1,684 1,902 2,157 2,349 2,583 2,816 3,085 3,313 3,650 3,882
38,10 1 1/2 lb/ft 0,830 1,090 1,375 1,556 1,769 1,930 2,128 2,326 2,556 2,753 3,047 3,253
1.500 kg/m 1,236 1,624 2,048 2,317 2,634 2,875 3,169 3,464 3,807 4,100 4,538 4,845
50,80 2 lb/ft 1,472 1,863 2,114 2,409 2,636 2,914 3,196 3,525 3,810 4,241 4,547
2.000 kg/m 2,192 2,775 3,148 3,588 3,925 4,340 4,759 5,250 5,674 6,316 6,771
63,50 2 1/2 lb/ft 1,854 2,351 2,671 3,050 3,341 3,701 4,066 4,494 4,867 5,435 5,839
2.500 kg/m 2,761 3,502 3,978 4,542 4,976 5,512 6,055 6,693 7,249 8,094 8,696
76,20 3 lb/ft 2,840 3,228 3,691 4,047 4,487 4,935 5,464 5,924 6,628 7,132
3.000 kg/m 4,229 4,808 5,497 6,027 6,683 7,350 8,137 8,823 9,871 10,622
We are stockist and distributor of duplex stainless steel heat exchanger tubes

Parts of duplex shell and heat exchanger tubes

  • Partition Plate
  • Stationary Tubesheet
  • Baffles
  • Bolt
  • Housing/Shell
  • Gasket
  • Nut
  • Tie Bars
  • Tubes
  • Shell

Hardness Test of DSS heat exchangers

Project Hardness HRC Hardness HV
Standard of pipe material 20 260
Bottom of spiral groove 36 35 355 340
Inner surface of pipe is not machined 27.5 28.5 29.7 285 290 300
Maximum hot forming temperature of duplex steel u tubes ranges between 2010 - 2100°F

Duplex steel seamless u tubes applications

  • Electric heaters
  • Gas coolers
  • Evaporators
  • Fluid coolers
  • Air heaters

Documentation of duplex stainless steel heat exchanger tubes

  • Raw material test report
  • Fumigation certification
  • Quality assurance plan
  • Heat treatment chart
  • Commercial invoice