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Austenitic-Ferritic Duplex Grade Stainless Steel Seamless Pipe

Thickness:0.5mm-2.0mm;
Outer Diameter:0.96-101.6 mm, 9.5mm-127mm;
Type: Seamless, Seamless, welded;
Certification: ISO

Quantity:

  • Austenitic-Ferritic Duplex Grade Stainless Steel Seamless Pipe
  • RONSCO

Duplex stainless steel pipe (DSS) is featured with the structure of two phases (α and γ) and has characteristics of both ferritic and austenitic stainless steel. It has good corrosion resistance and high strength. It is alloyed with 18%-28% Cr and 3%-10% Ni in the condition of low C.



                    Austenitic-Ferritic Duplex Grade Stainless Steel Seamless Pipe
Material: S31803(2205), S32750(2507), 254smo(31254), 904L Etc
Standard:GB/T21833-2008
OD:8mm~426mm
WT:1mm~75mm
Length:3000mm-12000mm
Surface:Annealed, Brightly Annealed, Polish
Application:For High-pressure vessel, Petroleum exploitation, Chemical industry, Shipbuilding
Technique:Hot Rolled (W-H), Cold Drawn (W-C)
Test and Inspection:Tension Test, Flaring Test, Flange Test, Reverse Test, Hardness Test, Hydrostatic or Nondestructive Electric Test, etc

                                                              Chemical Composition
 Steel Grade C, max Mn, max Si, max S, max P, max Cr, max Ni Mo NCu
 S32750(SAF2507)
00Cr25Ni7Mo4N
 0.03 1.20 0.8 0.02 0.035 24.0/26.0 6.0/8.0 3.0/5.0 0.24/0.320.50
 S31803(SAF2205)
00Cr22Ni5Mo3N
 0.03 2.00 1.0 0.02 0.030 21.0/23.0 4.5/6.5 2.5/3.5 0.08/0.20 
 S31500(3RE60)
00Cr18Ni5Mo3Siz
 0.03 1.2/2.0 1.4/2.0 0.03 0.030 18.0/19.0 4.25/5.25 2.5/3.0 0.05/0.10 
                                                                             Mechanical Properties
 Steel Gradeσb(Mpa)≥σs(Mpa)≥δ(%)≥Hardness
 HB HRC
 S32750(SAF2507)
00Cr25Ni7Mo4N
80055015 310 32
 S31803(SAF2205)
00Cr22Ni5Mo3N
62045025 290 30.5
 S31500(3RE60)
00Cr18Ni5Mo3Siz
63044030 290 30.5




QUALITY CONTROL:

  1. Incoming Raw Material Inspection

  2. Raw Material Segregation to avoid steel grade mix-up

  3. Heating and Hammering End for Cold Drawing

  4. Cold Drawing and Cold Rolling, on line inspection 

  5. Heat Treatment, +A, +SRA, +LC, +N, Q+T

  6. Straightening-Cutting to specified length-Finished Measuring Inspection

  7.  Mechanical testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc

  8. Packing and Stocking

Application:


• Heat Exchangers

• Boilers

• Condensers

• Chemical and Petrochemical

• Fertilizer Industry

PH Stainless Steel
17-4PH
17-7PH
15-5PH
Contacts​
Pones:+86-135-1749-7929
/ 0731-82250427
Email:info@ronsteel.com
Address: 1706, FuLi Building, NO.97, JiuCaiYuan Road, FuRong District, Changsha,Hunan, China

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