Womic Stainless Steel Co., Ltd
Womic Steel manufactures and supplies 2205 Seamless and Welded Stainless Steel Pipes strictly in accordance with international standards. 2205 duplex stainless steel pipe is a duplex stainless steel material composed of two phases: ferrite and austenite. Typically, the ferrite content is about 45–55%, while the austenite content is about 55–45%.
Its chemical composition includes approximately 22% chromium, 5-6% nickel, 3% molybdenum, and 0.18% nitrogen. Of all duplex stainless steels, duplex 2205 is the most widely used.This alloy design achieves an excellent balance between mechanical properties and corrosion resistance.
In terms of performance, 2205 duplex stainless steel pipe features a high yield strength (≥450 MPa), which is about twice that of austenitic stainless steels. It also offers outstanding resistance to chloride-induced stress corrosion cracking, as well as good wear and corrosion resistance, making it suitable for environments containing acids, alkalis, salts, and chloride ions.
Compared with 304 stainless steel, its resistance to chloride corrosion is more than three times higher; compared with 316L, it provides even superior overall corrosion resistance.
In addition, this material has good weldability (such as TIG welding or laser welding), and no complicated post-weld heat treatment is required. Its machinability is better than that of high-nickel alloys and martensitic steels.
The application range is very broad, particularly in harsh environments, including chemical equipment (reactors and pipelines), marine engineering (seawater desalination equipment and offshore platforms), oil and gas industry (high-sulfur oil well tubing and high-pressure pipelines, for example more than 850 km of pipelines used in the West–East Gas Pipeline Project), as well as food processing, paper industry, and high-strength structural components.
From an economic perspective, although the unit price is higher than that of common stainless steels such as 304, the service life can be extended by 2–3 times, resulting in a reduction of more than 40% in total life-cycle cost.
Regarding product standards, common specifications include ASTM A312 and EN 1.4462. The typical outer diameter range is 6–114 mm for seamless pipes. Surface finishing usually involves pickling or polishing.
Forming methods include cold drawing or hot rolling, and the solution annealing temperature should be controlled at no more than 1050°C to maintain a balanced duplex microstructure.
All 2205 duplex stainless Steel Pipes produced by Womic can be certified by leading international classification societies, including ABS, BV, DNV, LR, GL, RINA, CCS, KR, and NK, and can also be manufactured in compliance with NORSOK standards for offshore oil and gas applications.
Available Grades / Materials of Womic Duplex Stainless Steel Tubes:
Category UNS No. EN / DIN Common Name
Duplex Stainless Steel S31803 1.4462 2205
Super Duplex Stainless Steel S32750 1.4410 2507
Super Duplex Stainless Steel S32760 1.4501 Zeron 100
Lean Duplex Stainless Steel S32101 1.4162 2101
Lean Duplex Stainless Steel S32205 1.4462 SAF 2205
Super Austenitic Alternative N08926 1.4529 6Mo (254 SMO)
ASTM/ASME: A240 UNS S32205/S31803
EURONORM: 1.4462 X2CrNiMoN 22.5.3
AFNOR: Z3 CrNi 22.05 AZ
DIN: W.Nr 1.4462
All materials are supplied in solution annealed and pickled condition, ensuring optimal corrosion resistance and surface integrity.
|
Standard |
Description |
Equivalent Grade / Material Number |
|
ASTM A312 / A213 / A269 / A270 |
Stainless Steel Pipes and tubes for general, pressure, and sanitary service |
TP304 / TP304L Seamless & Welded Stainless Steel Pipe |
|
EN 10216-5 |
Seamless stainless steel tubes for pressure purposes |
1.4301 (X5CrNi18-10) / 1.4306 (X2CrNi19-11) |
|
DIN 17456 / DIN 17458 |
Austenitic stainless seamless tubes |
X5CrNi18-10 / X2CrNi19-11 |
|
JIS G3459 / G3463 |
Stainless steel pipes for general and heat-resisting use |
SUS304 / SUS304L Seamless & Welded Stainless Steel Pipe |
|
GB/T 14976 / GB/T 13296 |
Seamless stainless pipes for fluid and boiler use |
06Cr19Ni10 (304) / 00Cr19Ni10 (304L) |
These standards ensure that Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe meet global requirements for chemical composition, mechanical performance, testing, and dimensional accuracy.
Different specifications can be customized according to special requirements.
|
Execution Standard |
Main Standard |
Standard Grade |
|
GB (China) |
GB13296, GB/T14976, GB5310, GB/T21833 |
06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 07Cr17Ni12Mo2, 022Cr17Ni12Mo2, 07Cr19Ni11Nb, 022Cr22Ni5Mo3N |
|
NB (China Petrochemical Standard) |
NB/T 47019.1, NB/T 47019.5, NB/T 47019.6, NB/T 47019.7, NB/T 47019.9 |
06Cr19Ni10, 022Cr19Ni10, 06Cr25Ni20, 07Cr17Ni12Mo2, 06Cr19Ni13Mo3, 07Cr18Ni11Ti, 07Cr18Ni11Nb |
|
ASTM (USA) |
ASTM / ASME SA213,ASTM A249-24, ASTM A269,ASTM A312-24, ASTM A358-24, ASTM A376,ASTM A450,ASTM A511, ASTM B677, ASTM B622, ASTM B626, ASTM B464, ASTM B466,ASTM B677,ASTM A778-24, ASTM A813-24, ASTM A1016-23, ASTM A999-23, ASTM A789-24, ASTM A790-24 |
304 / 304L,304N,TP304H,TP309,TP310S,S 316 / 316L,TP316H,TP316N,TP316LN,TP316Ti, TP317L / 317,321 / 321H, 347 / 347H, S31254 (904L equivalent), S31803 (Duplex), S32205, S32750, S32760, S32404, S32550, S32520, S32900, S39274,UNS N08825, UNS N06625, UNS N10276,Alloy 20, Incoloy 800, Inconel 600, Inconel 690, Hastelloy B2, Alloy 200/201, Hastelloy C22 |
|
ASME (USA) |
SA/SB213, SA268, SA312, SA376, SA789, SA790, SB407, SB423, SB444, SB677 |
TP304/L/H, TP316/L/H/Ti, TP321/H, TP347/H, TP904L, S31254, S31803, S32205, S32750, S32760, N08810, N08825, N08020 |
|
EN / DIN (Europe) |
EN 10216-5, EN 10297-2, EN 10217-7 (2021),EN 10312 |
X2CrNi18-9 (1.4307), X5CrNi18-10 (1.4301), X2CrNiMo17-12-2 (1.4404), X5CrNiMo17-12-2 (1.4401), X6CrNiMoTi17-12-2 (1.4571), X2CrNiMoN22-5-3 (1.4462) |
|
JIS (Japan) |
JIS G3459, JIS G3463 |
SUS304/TP, SUS304LTP, SUS304HTB, SUS316/TP, SUS316LTP, SUS321TP, SUS347TP, SUS310STP |
|
GOST (Russia) |
GOST 9941, GOST 5632 |
08Х18Н10, 12Х18Н10Т, 10Х17Н13М2Т, 03Х17Н14М3, 08Х22Н6Т, 10Х17Н13М2Т, 03Х21Н21М4ГБ |
|
ISO (International) |
ISO 1127, ISO 9329-4 |
X2CrNi18-9, X2CrNiMo17-12-2, X2CrNiMoN22-5-3, X2CrNiMo17-13-3 |
CHEMICAL PROPERTIES
|
|
C |
Mn |
Si |
P |
S |
Cr |
Mo |
Ni |
N |
|
2205 |
0.03 |
2.0 |
1.0 |
0.03 |
0.02 |
min:21.0 |
min:2.5 |
min:4.5 |
min:0.08 |
|
2205 |
0.03 |
2.0 |
1.0 |
0.03 |
0.02 |
min:22.0 |
min:3.0 |
min:4.5 |
min:0.14 |
MECHANICAL PROPERTIES of Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe
|
Grade |
Tensile Strength ksi (min) |
Yield Strength |
Elongation % |
Hardness (HB) MAX |
|
2205 |
90 |
65 |
25 |
217 |
PHYSICAL PROPERTIES of Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe
|
|
Density |
Electrical Resistivity |
Thermal Conductivity |
Heat Capacity |
Electrical Resistivity |
|
at 68°F |
0.278 |
27.6 |
8.7 |
0.112 |
33.5 |
|
at 212°F |
|
26.1 |
9.2 |
0.119 |
35.4 |
|
at 392°F |
|
25.4 |
9.8 |
0.127 |
37.4 |
|
at 572°F |
|
24.9 |
10.4 |
0.134 |
39.4 |
HEAT RESISTANCE:
Similar to other duplex stainless steels, Duplex 2205 has good oxidation resistance at high temperatures
Subject to embrittlement when exposed to temperatures above 572°F (300°C) even when exposed for short periods of time; Duplex 2205 is therefore not recommended for use above 572°F (300°C)
Womic Steel adopts advanced production technology to ensure eachStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe meets exact specifications and flawless surface quality.
1. Raw Material Selection:High-qualityStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipebillets from certified mills (Baosteel, TISCO, POSCO).
2. Heating and Piercing:Billets heated to a controlled temperature and pierced using a rotary piercing mill to form hollow shells.
3. Hot Rolling:Shells elongated and rolled to desired size.
4. Cold Drawing / Cold Pilgering:Pipes refined to precise dimensions and improved surface finish.
5. Solution Annealing:Heat treatment to restore corrosion resistance and ductility.
6. Pickling & Passivation:Removal of oxides and creation of passive film for enhanced corrosion protection.
7. Straightening and Dimensional Calibration:Ensures consistent roundness and wall uniformity.
8. Final Inspection & Marking:Each pipe tested, marked with grade, heat number, and standard before packing.
This process guarantees a smooth internal bore, high structural integrity, and exceptional corrosion resistance across all batches of Womic Steel’sStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe.
Womic Steel utilizes state-of-the-art manufacturing technology to ensure everyStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipemeets precise specifications and delivers excellent surface quality and performance.
1. Raw Material Selection:High-qualityStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipestainless steel strips/coils from certified suppliers (e.g., Baosteel, TISCO, POSCO).
2. Slitting & Uncoiling:The steel coil is slit to the required width and uncoiled for feeding into the forming mill.
3. Forming & Welding:The strip is progressively formed into a cylindrical shape and the edges are welded together using advanced TIG or Plasma welding techniques to create a solid weld seam.
4. Weld Seam Treatment:The external weld bead is removed to achieve a smooth surface, and the internal bead may be controlled or treated for bore cleanliness.
5. Solution Annealing:A full heat treatment process is applied to dissolve carbides, restore corrosion resistance, and relieve stresses from welding and forming.
6. Sizing & Calibration:The pipe is passed through a sizing mill to achieve the final precise outer diameter and roundness.
7. Straightening:The pipe is straightened to ensure optimal linearity.
8. Pickling & Passivation:Chemical treatment removes scale and impurities, while promoting the formation of a protective passive oxide layer on the surface, including the weld zone.
9. Non-Destructive Testing (NDT):The weld seam is inspected using methods like Eddy Current or Ultrasonic Testing to ensure integrity and quality.
10. Final Inspection & Marking:Each pipe undergoes dimensional checks, visual inspection, and is marked with grade, heat number, and relevant standards before packaging.
This controlled process guarantees a consistent weld seam, excellent dimensional accuracy, and superior corrosion resistance for every batch of Womic Steel's 304 and 304L Welded Steel Pipes.
Outside Diameter:6mm – 1219mm (1/4" – 48")
Wall Thickness:0.5mm – 50mm (SCH 5S – SCH XXS)
Length:Up to 12m(fixed or random)
Tolerances:According to ASTM A999 / EN ISO 1127
|
ANSI B 36.19/ANSI B36.10 DIMENSIONS OF SEAMLESS &WELDED STAINLESS STEEL PIPE |
|||||||||||||||||||
|
公称尺寸 |
外径 |
ANSIB36.19 |
ANSIB36.10ANSIB36.10 |
||||||||||||||||
|
DN |
NPS |
mm |
5S |
10S |
40S |
80S |
10 |
20 |
30 |
STD |
40 |
60 |
XS |
80 |
100 |
120 |
140 |
160XXS |
|
|
6 |
1/8" |
10.29 |
|
1.24 |
1.73 |
2.41 |
|
|
|
1.73 |
1.73 |
|
2.41 |
2.41 |
|
|
|
|
|
|
8 |
1/4" |
13.72 |
|
1.65 |
2.24 |
3.02 |
|
|
|
2.24 |
2.24 |
|
3.02 |
3.02 |
|
|
|
|
|
|
10 |
3/8" |
17.15 |
|
1.65 |
2.31 |
3.20 |
|
|
|
2.31 |
2.31 |
|
3.20 |
3.20 |
|
|
|
|
|
|
15 |
1/2" |
21.34 |
1.65 |
2.11 |
2.77 |
3.73 |
|
|
|
2.77 |
2.77 |
|
3.73 |
3.73 |
|
|
|
4.78 |
7.47 |
|
20 |
3/4" |
26.67 |
1.65 |
2.11 |
2.87 |
3.91 |
|
|
|
2.87 |
2.87 |
|
3.91 |
3.91 |
|
|
|
5.56 |
7.82 |
|
25 |
1" |
33.4 |
1.65 |
2.77 |
3.38 |
4.55 |
|
|
|
3.38 |
3.38 |
|
4.55 |
4.55 |
|
|
|
6.35 |
9.09 |
|
32 |
1 1/4" |
42.16 |
1.65 |
2.77 |
3.56 |
4.85 |
|
|
|
3.56 |
3.56 |
|
4.85 |
4.85 |
|
|
|
6.35 |
9.70 |
|
40 |
1 1/2" |
48.26 |
1.65 |
2.77 |
3.68 |
5.08 |
|
|
|
3.68 |
3.68 |
|
5.08 |
5.08 |
|
|
|
7.14 |
10.16 |
|
50 |
2" |
60.33 |
1.65 |
2.77 |
3.91 |
5.54 |
|
|
|
3.91 |
3.91 |
|
5.54 |
5.54 |
|
|
|
8.74 |
11.07 |
|
65 |
2 1/2" |
73.03 |
2.11 |
3.05 |
5.16 |
7.01 |
|
|
|
5.16 |
5.16 |
|
7.01 |
7.01 |
|
|
|
9.52 |
14.02 |
|
80 |
3" |
88.9 |
2.11 |
3.05 |
5.49 |
7.62 |
|
|
|
5.49 |
5.49 |
|
7.62 |
7.62 |
|
|
|
11.13 |
15.24 |
|
90 |
3 1/2" |
101.6 |
2.11 |
3.05 |
5.74 |
8.08 |
|
|
|
5.74 |
5.74 |
|
8.08 |
8.08 |
|
|
|
|
|
|
100 |
4" |
114.3 |
2.11 |
3.05 |
6.02 |
8.56 |
|
|
|
6.02 |
6.02 |
|
8.56 |
8.56 |
|
11.13 |
|
13.50 |
17.12 |
|
125 |
5” |
141.3 |
2.77 |
3.40 |
6.55 |
9.52 |
|
|
|
6.55 |
6.55 |
|
9.52 |
9.52 |
|
12.70 |
|
15.90 |
19.05 |
|
150 |
6" |
168.28 |
2.77 |
3.40 |
7.11 |
10.97 |
|
|
|
7.11 |
7.11 |
|
10.97 |
10.97 |
|
14.30 |
|
18.20 |
21.95 |
|
200 |
8" |
219.08 |
2.77 |
3.76 |
8.18 |
12.70 |
|
6.35 |
7.04 |
8.18 |
8.18 |
10.30 |
12.70 |
12.70 |
15.10 |
18.20 |
20.60 |
23.00 |
22.22 |
|
250 |
10" |
273.05 |
3.40 |
4.19 |
9.27 |
12.70 |
|
6.35 |
7.80 |
9.27 |
9.27 |
12.70 |
12.70 |
15.09 |
18.26 |
21.44 |
25.40 |
28.58 |
|
|
300 |
12" |
323.85 |
3.96 |
4.57 |
9.52 |
12.70 |
|
6.35 |
8.38 |
9.52 |
10.31 |
14.27 |
12.70 |
17.48 |
21.44 |
25.40 |
28.58 |
33.32 |
|
|
350 |
14" |
355.6 |
3.98 |
4.78 |
|
|
6.35 |
7.92 |
9.52 |
9.52 |
11.13 |
15.09 |
12.70 |
19.05 |
23.83 |
27.79 |
31.75 |
35.71 |
|
|
400 |
16" |
406.4 |
4.19 |
4.78 |
|
|
6.35 |
7.92 |
9.52 |
9.52 |
12.70 |
16.66 |
12.70 |
21.44 |
26.19 |
30.96 |
36.53 |
40.49 |
|
|
450 |
18" |
459.2 |
4.19 |
4.78 |
|
|
6.35 |
7.92 |
11.13 |
9.52 |
14.27 |
19.05 |
12.70 |
23.83 |
29.36 |
34.92 |
39.67 |
45.24 |
|
|
500 |
20" |
508 |
4.77 |
5.53 |
|
|
6.35 |
9.52 |
12.70 |
9.52 |
15.09 |
20.62 |
12.70 |
26.19 |
32.54 |
38.10 |
44.45 |
50.01 |
|
|
550 |
22" |
558.8 |
4.77 |
5.53 |
|
|
6.35 |
9.52 |
12.70 |
9.52 |
15.87 |
22.22 |
12.70 |
28.57 |
34.92 |
41.27 |
47.62 |
53.97 |
|
|
600 |
24" |
609.6 |
5.54 |
6.35 |
|
|
6.35 |
9.52 |
14.70 |
9.52 |
17.48 |
24.61 |
12.70 |
30.96 |
38.89 |
46.02 |
52.37 |
59.94 |
|
|
650 |
26" |
660.4 |
|
|
|
|
7.92 |
12.70 |
|
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
700 |
28" |
711.2 |
|
|
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
750 |
30" |
762 |
6.35 |
7.92 |
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
|
800 |
32" |
812.8 |
|
|
|
|
7.92 |
12.70 |
15.88 |
9.52 |
|
|
12.70 |
|
|
|
|
|
|
Womic Steel offers a wide range of surface finishes to meet various industrial, sanitary, and decorative applications.
|
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe Surface Type |
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe Description |
|
Annealed & Pickled (AP Finish) |
Bright silver appearance after acid treatment, suitable for industrial piping. |
|
Bright Annealed (BA Finish) |
Mirror-like surface obtained through controlled atmosphere annealing. |
|
Polished Finish (180#, 240#, 320#, 400#, 600#) |
Smooth mechanical finish suitable for decorative and architectural use. |
|
Mirror Polished (8K) |
Ultra-reflective surface ideal for sanitary and high-end design. |
|
Brushed / Hairline Finish |
Satin linear texture for furniture and interior design. |
|
Passivated Finish |
Surface chemically treated to enhance corrosion protection. |
|
Electropolished Finish |
Extremely clean, smooth, and hygienic finish ideal for food and pharmaceutical equipment. |
Each Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe surface is inspected for uniform gloss, absence of pits, and consistent finish quality.
EveryStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipeundergoes comprehensive inspection in accordance with ASTM, EN, and GB standards to guarantee reliability and performance:
These extensive tests ensure that every Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe from Womic Steel meets the highest international standards for reliability and longevity.
MAIN APPLICATIONS of Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe:
Chemical processing, transport and storage – pressure vessels, tanks, piping, and heat exchangers
Oil and gas exploration and processing equipment – piping, tubing, and heat exchangers
Marine and other high chloride environments
Effluent scrubbing systems
Pulp and paper industry – digesters, bleaching equipment, and stock-handling systems
Cargo tanks for ships and trucks
Food processing equipment
Biofuels plants
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe is ideal for a wide variety of industries, offering long service life and corrosion resistance in demanding conditions:
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Chemical and Petrochemical Industry:Process piping, acid-resistant lines.
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Food and Beverage Industry:Sanitary systems, liquid transfer, brewing pipelines.
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Pharmaceutical Equipment:Clean piping, sterile environments.
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Heat Exchanger Tubes:Boilers, condensers, and evaporators.
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Marine Engineering:Offshore pipelines, seawater systems, desalination, ballast piping (ship classification certifications available from ABS, BV, DNV, LR, GL, RINA, CCS, KR, NK).
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Construction and Decoration:Handrails, structural and architectural applications.
Stainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe for Water Treatment and Gas Systems:High-purity and corrosion-resistant pipelines.
EachStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipeis securely packed and clearly labeled to ensure safe and efficient transport worldwide.
General packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.
Hexagonal packaging: Bundle packing with woven fabric, iron strip bundle, plastic cap on two ends for local truck transport.
Packaging of welded pipe in medium and large sizes: Wrapped with woven fabric by automatic packaging for export sea-worthy transport.
Packaging for medium and large size welded pipes to be exported: Wooden or steel crate packaging for export sea-worthy transport.
General packaging for products to be exported: Wooden box for export sea-worthy transport.
Packaging of condensation pipe and low-pressure heater tube: Wooden box for local truck and export sea-worthy transport.
1. Direct cooperation with global shipowners ensures the most competitive freight rates.
2. Professional loading and securing teams guarantee damage-free shipment.
3. Efficient document preparation, minimizing customs delays.
4. Rapid delivery time — standard sizes kept in ready stock more than 10,000tons.
5. Continuous cargo tracking and after-sales follow-up to ensure smooth arrival at destination.
Womic Steel is a trusted manufacturer and exporter specializing inStainless Steel - Grade 2205 Duplex (UNS S32205) Stainless Steel Pipe ,committed to delivering premium quality and professional service.
