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Duplex 2205 Pipe fittings

Duplex 2205 pipe fittings specifications

What are duplex 2205 pipe fittings?

Critical sectors like petrochemicals, oil & gas refineries, and water treatment plants require materials that handle adverse temperatures and corrosive agents. Duplex 2205 pipe fittings are a fine choice for these industries, boasting a chemical composition of austenitic and ferritic grades of stainless steel. They comprise up to 22% chromium with inclusions of nickel and molybdenum.

Duplex 2205 buttweld fittings can be of various types, such as elbows to change the direction of fluid flow, reducers, tees, unions, couplings, and crosses. Customers can acquire them in diverse sizes, although 1/8 to 4 inches is standard.

Duplex stainless steel 2205 elbow supplier in India


Specification of duplex 2205 pipe fittings

American specifications Thickness Size
ASTM A815 / ASME SA815 Sch 5s, Sch 10s, Sch 80s, Sch 40s, Sch 160s 1/2" to 24" NB inch
Grades Types End connections
S31803 / S32205 Elbow, tee, reducer, stub end, cap Welding
Technics Surface treatment Inspection
Forged sand rolling, sand blasting PMI, UT, dimension passed

We are the leading manufacturer of 2205 duplex fittings in Mumbai, check properties of duplex 2205 steel reducer here

What are the key properties of duplex 2205 pipe fittings?

These components enjoy a favorable reputation for withstanding corrosion of different types: general, localized, and stress-induced cracking. Duplex 2205 fittings present a trustable solution to the prevalent problem of chloride stress cracking in oil and gas plants and pressure vessels. A UNS S31803 duplex steel tee has a PREN of approximately 35, much higher than regular stainless steel.

An ASTM A815 UNS S32205 stub end also shows commendable strength (800 Mpa) and impact resistance. It can endure high pressure and stress without facing deformation. The temperature tolerance of a duplex 2205 elbow is admirable: up to 300°C or 572°F.

Types of duplex 2205 buttweld fittings


Duplex 2205 reducer

Duplex 2205 reducer

Duplex 2205 elbow

Duplex 2205 elbow

Duplex 2205 fittings

Duplex 2205 fittings

Uns s31803 duplex steel tee

Uns s31803 duplex steel tee

We produce UNS S31803 steel tee and 2205 duplex reducer as per customer drawing

What is the role of ultrasonic testing and radiographic inspection in detecting defects in duplex 2205 fittings?

A thorough and accurate non-destructive testing approach (NDT) certifies the quality and properties of a WERKSTOF 1.4462 end cap. Techniques like ultrasonic testing and radiographic inspection are regularly used for various fittings, diagnosing issues in the weld integrity, discontinuities, cracks, etc.

While radiography uses X-rays, UT testing transmits high-frequency ultrasonic waves through a 2205 duplex steel reducer. The former can pose health and safety threats upon mishandling, but the latter is safer and more effective even for thicker sections.

Manufacturers summaries the test results in a Mill Test Report or Certificate (MTR/MTC). Such testing ascertains compliance with the required specifications, like an ASME SA 403 duplex pipe bend or other fittings.

Chemical composition of DSS 2205 reducer


Mo C Mn Cr Ni Si P S N Fe
3.00-3.50
.030 Max
2.00 Max
22.0-23.0
4.50-6.50
1.00 Max
.030 Max
.020 Max
0.14-0.20
Balance
Check dimensions and thickness of WNR 1.4462 End Cap and DSS 2205 stub end

Mechanical properties of DSS 2205 elbow


Grade % Elongation YS (MPa) Hardness(BHN) UTS (MPa)
S31803 25 min. 450 min. 293 max. 620 min.
Check chemical composition and mechanical properties of duplex 2205 buttweld fittings

Equivalent grade of duplex 2205 tee


STANDARD WERKSTOFF NR. UNS
Duplex 1.4462 S31803 / S32205

Pressure ratings of duplex 2205 buttweld fittings


Duplex 2205 buttweld fittings pressure rating (psig)
NPS
(")
OD
(")
Wall
thickness
(in)
Schedules Temperature
100 200 400 500 300
Pressure rating
16700 16700 15500 14400 16700
1 1/2" 1.0900 0.0200 80 2303 2303 2138 1986 2303
1.0900 0.0145 40 1629 1629 1512 1404 1629
1.0900 0.0281 160 3362 3362 3120 2899 3362
2" 2.0375 0.0218 80 1985 1985 1843 1712 1985
2.0375 0.0154 40 1371 1371 1272 1182 1371
2.0375 0.0344 160 3283 3283 3047 2831 3283
3" 3.0500 0.0438 160 2787 2787 2587 2403 2787
3.0500 0.0216 40 1301 1301 1208 1122 1301
3.0500 0.0300 80 1844 1844 1712 1590 1844
4" 4.0500 0.0337 80 1596 1596 1482 1377 1596
4.0500 0.0237 40 1102 1102 1023 950 1102
4.0500 0.0531 160 2611 2611 2424 2552 2611
5" 5.0563 0.0375 80 1428 1428 1325 1231 1428
5.0563 0.0258 40 965 965 896 832 965
5.0563 0.0625 160 2474 2474 2296 2133 2474
6" 6.0625 0.0280 40 877 877 814 756 877
6.0625 0.0719 160 2382 2382 2211 2054 2382
6.0625 0.0432 80 1379 1379 1280 1189 1379
8" 8.0625 0.0322 40 771 771 716 665 771
8.0625 0.0906 160 2298 2298 2133 1982 2298
8.0625 0.0500 80 1218 1218 1131 1050 1218

Applications of duplex 2205 elbow


  • Chemical processing
  • Transport and storage
  • Oil and gas refining
  • Oil and gas exploration and offshore rigs
  • Pollution control equipment
  • Marine environments
  • Chemical process plant
  • Pulp & paper industry

Dimensions of UNS S32205 reducer


Nominal fitting size Duplex 2205 fittings All fittings Elbow & tees Reducers 180° return bend 180° return bend Caps 180° return bend
NPS O.D. at Bevel (1), (2) I.D. at End
(1), (3), (4)
Centre to end dimension Overall length Centre to centre Back to face Overall length Alignment of ends
1/2 to 2 1/2 0.06
-0.03
0.03 0.06 0.06 0.25 0.25 0.12 0.03
4 0.06 0.06 0.06 0.06 0.25 0.25 0.12 0.03
10 to 18 0.16
-0.12
0.12 0.09 0.09 0.38 0.25 0.25 0.06
26 to 30 0.25
-0.19
0.19 0.12 0.19 0.38
5 to 8 0.09
-0.06
0.06 0.06 0.06 0.25 0.25 0.25 0.03
3 to 3 1/2 0.06 0.06 0.06 0.06 0.25 0.25 0.12 0.03
20 to 24 0.25
-0.19
0.19 0.09 0.09 0.38 0.25 0.25 0.06
32 to 48 0.25
-0.19
0.19 0.19 0.19 0.38

Weight chart of WNR 1.4462 fittings


NPS (inch) Weight as per ASME B16.9
Sch 40S Sch 80S
3/4 0.15 0.17
1 1/4 0.30 0.35
1 0.20 0.25
1 1/2 0.38 0.46
2 1/2 0.80 1.00
1/2 0.12 0.13
2 0.55 0.75
3 1.10 1.50
5 2.50 3.50
4 1.80 2.50
6 3.70 5.50
10 10.5 14.0
8 5.90 10.0
12 15.0 20.0
16 18.0 24.0
14 15.5 20.5
18 21.0 28.0
24 28.5 38.0
20 23.5 31.0