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High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean

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High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean

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Large Image :  High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean

Product Details:
Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008, PED 97/23/EC
Model Number: Seamless Tube
Payment & Shipping Terms:
Minimum Order Quantity: Negotiation
Price: Negotiation
Delivery Time: 25 DAYS
Payment Terms: T/T or L/C
Supply Ability: 1000 TONS / MONTH
Detailed Product Description
Materials: Duplex Steel UNS S32205/S31803 Product Name: Duplex Stainless Steel Tube
Standard: ASME SA789 O.D.: 5/8"-2"
W.T.: BWG18-BWG14 Length MAX: 12000MM Max.
Pipe Finish: TIG Welded Type: Welded
Shape: Round Surface: Bright Annealed
Application: Heat Exchanger Package: Wooden Case
High Light:

duplex stainless steel pipe


duplex ss pipe

High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean​




Duplex 2205 is a nitrogen enhanced duplex stainless steel that was developed to combat common corrosion problems encountered with the 300 series stainless steels. “Duplex” describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205 contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is the most widely used grade in the duplex family of stainless steels.

The advantage of a duplex structure is that it combines the favorable qualities of a ferritic alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy (ease of fabrication and corrosion resistance).


Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F. Extended elevated temperature exposure can embrittle 2205 stainless.

Corrosion Resistance.





UNS S31803

ASME SA-182 (F51), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F51),A240, A276, A479, A789, A790, A815, A928, A988
SAE J405


UNS S32205

ASME SA-182 (F60), SA-240, SA-798, SA-790, SA-815
ASTM A182 (F60), A240, A276, A479, A480, A798, A790, A815, A928, A988
SAE J405



Specifications of Duplex Stainless Steel Welded Tube


1. Standard: ASTM ASME
2. Grade: 630 / 631 / 2205 / 2507 / 17-4PH
ASTM A789, ASTM A790, ASTM A450, ASTM A530,
GB/T 14976, GB/T 14975, GB/T 13296, etc
3. OD: 8mm-1000mm
4. Wall thickness: 0.3mm-30mm
5. Length: max.18000mm or as demand

6. Surface finish: Polishing (180#,220#,240#,320#400#,600#), Hairline, acid pickled, etc.





  • High resistance to chloride stress corrosion cracking
  • Chloride pitting and crevice corrosion resistance superior to 317L stainless
  • Good general corrosion resistance
  • High strength
  • Good sulfide stress corrosion resistance
  • Useful up to 600°F


  • Chemical process vessels, piping, and heat exchangers
  • FGD scrubber systems
  • Pulp mill digesters, bleach washers, chip presteaming vessels
  • Food process equipment
  • Oil field piping, heat exchangers


ASTM A789 UNS S31803 Tube Specification:

Chemical Element % Present
Carbon (C) 0.0 – 0.03
Chromium (Cr) 21.00 – 23.00
Manganese (Mn) 2.00 max
Silicon (Si) 1.00 max
Phosphorous (P) 0.0 – 0.03
Sulphur (S) 0.0 – 0.02
Nickel (Ni) 4.50 – 6.50
Nitrogen (N) 0.08 – 0.20
Molybdenum (Mo) 2.50 – 3.50
Iron (Fe) Balance


Physical Property Value
Density 7.805 g/cm³
Thermal Expansion 13.7 x10^-6 /K
Modulus of Elasticity 200 GPa
Thermal Conductivity 19.0 W/m.K
Electrical Resistivity 0.085 x10^-6 Ω .m


Mechanical Property Value
Proof Stress 450 Min MPa
Tensile Strength 620 Min MPa
Elongation A50 mm 25 Min %
Hardness Brinell 290 Max HB


High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean 0



Specifications (ASTM/ASME) Duplex Stainless Steel Pipe
Alloy UNS Designation Material
2205 S31803/S32205 A 240/SA-240 A 270 A 790/SA-790
      A 789/SA-789 A928/SA928


Chemical Compositions:


Chemical Composition (%) Duplex Stainless Steel Pipe
Alloy 2205 2205
UNS Designation S31803 S32205
Carbon (C) max. 0.030 0.030
Manganese (Mn) max. 2.00 2.00
Phosphorus (P) max. 0.030 0.030
Sulfur (S) max. 0.020 0.020
Silicon (Si) max. 1.00 1.00
Chromium (Cr) 21.0 - 23.0 22.0 - 23.0
Nickel (Ni) 4.5 - 6.5 4.5 - 6.5
Molybdenum (Mo) 2.5 - 3.5 3.0 - 3.5
Nitrogen (N) 0.08 - 0.20 0.14 - 0.20
Iron (Fe) Balance Balance


High Strength duplex 2205 stainless steel Pipe , 2205 Duplex Tubing Easy Clean 1

Contact Details
Spezilla Tube Co., Ltd. (Shanghai)

Contact Person: Will Ma

Tel: +86 13918539222

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