Ferritic/Austenitic Duplex Stainless Steel Pipes 316 316L Duplex SS Tube - Yaang


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Ferritic/Austenitic Duplex Stainless Steel Pipes 316 316L Duplex SS Tube

  • FOB PriceUSD 800 - 30,000/Piece
  • PortNingbo or Shanghai
  • MOQ0.5 Tons
  • Supply Ability1000 Tons Per Month
  • Payment TermsL/C,T/T,Western Union
  • PackagingSeaworthy plywood cases or pallets
  • Delivery2 - 15 days

Detailed description

Quick Details

MaterialStainless Steel      Model NumberASTM A312, 2205, 2520, TP310s

Certification: ISO 9001         Place of Origin: Zhejiang, China (Mainland)     Brand Name: Yaang

Ferritic / Austenitic Duplex Stainless Steel Pipes 316 316L Duplex SS Tube


Annealed Duplex Stainless Steel Pipe 

Manufacturing Process:

cold drawn, Pickled, Annealed, sand blasting

Material Grade:

TP304/304L, TP347H,TP316/316L/316Ti, 2205,2520, 2750,ETC

Outside Diameter.

Φ6.00 mm-Φ710 mm














Definition of Stainless Steel: 

In metallurgy, stainless steel, also known as inox steel or inox from French "inoxydable", is defined as a steelalloy with a minimum of 10.5% to 11% chromium content by mass.Stainless steel does not readily corroderust or stain with water as ordinary steel does, but despite the name it is not fully stain-proof, most notably under low oxygen, high salinity, or poor circulation environments. It is also called corrosion-resistant steel or CRES when the alloy type and grade are not detailed, particularly in the aviation industry.

There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and resistance to corrosion are required.


Material Description: 

American Standard

Austenitic Steel:

TP304,TP304L,TP304H,TP304N, TP310S,TP316,TP316L,TP316Ti,TP316H, 

TP317,TP317L, TP321, TP321H,TP347, TP347H,904L…

Duplex Steel :

S32101,S32205,S31803,S32304,S32750, S32760

European Standard

1.4301,1.4307,1.4948,1.4541,1.4878,1.4550,1.4401,1.4404,1.4571,1.4438, 1.4841,

1.4845,1.4539,1.4162, 1.4462, 1.4362, 1.4410, 1.4501



Main Production Standard:


Standard Type



EN10216-5 , EN10216-2


DIN 17456 , DIN 17458


ASTM A312, A213, A269, A511, A789, A790 ETC


GOST 9941 , GOST 5632


JIS G3459 , JIS G3463


GB/T14975,GB/T14975, GB13296, GB5310, GB9948



Size Detail:


 Outside Diameter

Wall Thickness

Annealed Duplex Stainless Steel Pipe 

6.00mm to 710mm

0.6 mm to 60mm



Applications of Duplex 2205

  • Chemical process vessels, piping and heat exchangers
  • Pulp mill digesters, bleach washers, chip pre-steaming vessels
  • Food processing equipment
  • Oil field piping and heat exchangers
  • Flue gas desulfurization equipment


Corronsion Resistance

  • Excellent general corrosion resistance; superior to Grade 316 in most environments. Excellent resistance to localised corrosion including intergranular, pitting and crevice corrosion; the CPT of 2205 is generally at least 35°C. The grade is also resistant to chloride stress corrosion cracking (SCC) at temperatures of up to about 150°C. Grade 2205 will often perform well in environments which cause premature failure of austenitic grades. It has better resistance to sea water than grade 316.


Heat Resistance

  • Although 2205 has good high temperature oxidation resistance this grade, like other duplex stainless steels, suffers from embrittlement if held for even short times at temperatures above 300°C. 
  • If embrittled this can only be rectified by a full solution annealing treatment. Duplex stainless steels are almost never used above 300°C.





Annealed Duplex Stainless Steel Pipe 



Material Grade

TP304/TP304L /TP316/ TP316L /TO316Ti/ TP347H /TP321/ TP321H /TP310/ TP310S/TP310H




S31803/S32205 S32750 S32760 S32304 S32101

Outer Diameter



 0.6mm - 60mm


5.0-5.8 MTR or as customers' request


 According to the Standard.


Natural Color of annealing & pickling, 180G, 320G, 400G Satin / Hairline

400G, 500G, 600G or 800G Mirror finish


UT,ET,HT,RT,ect,and others according to the standard,or as the requests of the customers

Certificate ISO9001

Packing Details

Plastic bags, in bundles, wooden cases or depend on buyer’s requirement

Payment Terms

L/C, T/T, Western Union

Shipment Term

FOB, etc.

Delivery Time

Depend on the quantity



Specifications of Duplex 2205:

Standard Duplex 2205
UNS S31803 / S32205
Werkstoff Nr. 1.4462


Chemical Composition of Duplex2205:

  Duplex 2205
Ni 4.5 – 6.5
Fe Balance
Cr 22 – 23
Mo 3 – 3.5
C 0.030 max
Mn 2.0 max
Si 1 max
P 0.030 max
N 0.14 – 0.2
S 0.02 max

Mechanical & Physical Properties of Duplex 2205:

Density 7.8 g/cm3
Melting Point 1440 °C (2625 °F)
Tensile Strength Psi – 90000 , MPa – 620
Yield Strength (0.2%Offset) Psi – 65000 , MPa – 450
Elongationstrong> 30 %

Standard Specification:

 ASTM A213 / A213M - 11a:Standard Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

ASTM A269 - 10:Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A312 / A312M - 12:Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes

ASTM A789 / A789M - 10a:Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

ASTM A790 / A790M - 11:Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe


EN Standards

EN 10216-5 Welded Stainless Steel Tube

EN 10216-7 Seamless Stainless Steel Tube

EN 10216-7 Seamless Stainless Steel Tube


Competitive Advantage:

1. We offer you our best price with good quality of the materials.

2. We will deliver the materials strictly according to the the delivery date noted on the contract.

3. We also always have the huge ready stock for sell.

4. We have advanced NDT equipments for the tests such as Eddy Current test, Ultrasonic test, Hydraulic test and so on.

5.We have complete after-sale service to deal with the problems in time.

6. Wooden case package which is strong and suitable for sea transportation is our main method to pack the pipes. 

    And the economical packing method such as packing in bundles.


Production Process of Stainless Steel Seamless Pipe: 

Production Process of Stainless Steel Seamless Pipe

Related products:More>>

Tel No:+86-18267732328 / Fax No :86-0577-56809281 / Email:sales@yaang.com
Address:Longwan District, Wenzhou, Zhejiang Province, China.

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