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stainless steel sheet/plate



Duplex stainless steel pipe 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. Comparing with ferritic stainless, duplex stainless steel has higher plasticity, ductility and better intergranular corrosion resistance and weldability.

2205 UNS S32305/S31803 is a 22% chromium, 3% molybdenum, 5-6% nickel, nitrogen alloyed Duplex Stainless Steel Pipe with high general, localized, and stress corrosion resistance properties in addition to high strength and excellent impact toughness.

2101 is a low nickel, lean duplex stainless steel possessing both superior strength and chloride stress-corrosion cracking resistance when compared to 300 series stainless steel.

2304 A lean austenitic-ferritic duplex stainless steel with general corrosion resistance similar to 316, but with yield strength nearly double that of austenitic stainless steel.

S31803 and S32205 are standard duplex stainless steel. A nitrogen, molybdenum enhanced austenitic-ferritic duplex stainless steel with general corrosion resistance similar to 904L, but with a yield strength nearly double that of austenitic stainless steel.

2507 (PREN 40-45), with 25-26 Cr and increased Mo and N compared with the 25Cr grades. A super austenitic-ferritic duplex stainless steel with exceptional strength and corrosion resistance ideal for chemical process, petrochemical, and seawater applications.


ISO Unified Digital Code

ASTM / ASME

UNS code

EN Code

Company Commercial Grade

S23043

S32304

S32304

1.4362

SAF2304 (Sandvik)

S22253

S31803

S31803

1.4462

-

S22053

S32205

S32205

1.4462

SAF2205 (Sandvik)

S25073

S32750

S32750

1.4410

SAF2507(Sandvik)

S22583

S31260

S31260

-

-

S25554

S32550

S32550

1.4507

UR52+

S27603

S32760

S32760

1.4501

Zeron100

-

S32707

S32707

-

SAF2707(Sandvik)

Duplex Stainless Steel Tubes Features:

1.Superior resistance to general and local corrosion, especially to stress corrosion, pitting corrosion, crevice corrosion, corrosion fatigue and abrasion & corrosion.

2.Good weldability

3.Good mechanical properties

4.Excellent intergranular corrosion resistance

5.High cost-effectiveness, long life time


Duplex Stainless Steel Tube Main Testing Terms and Procedure:

1. Heat Treatment and Solution Annealing / Bright Annealing

2. Cutting to required length and deburring;

3. Chemical Composition Analysis Test With 100% PMI and One tube from each heat by Direct Reading Spectrometer

4. Visual Test and Endoscope Test for Surface Quality Test

5. 100% Hydrostatic Test and 100% Eddy Current Test

6. Ultrasonic Test subject to the MPS (Material Purchase Specification)

7. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test

8. Impact Test subject to Standard request

9. Grain Size Test and Intergranular Corrosion Test

Stainless Steel Value Add

Stainless Steel Pipe Polishing

polish nearly any stainless steel pipe item to a #4 polish, #6 Polish, #7 polish or a #8 mirror finish. Stainless steel polished pipes can also be cut to size.

Stainless Steel Pipe Beveling

bevel the edges of stainless steel plate to prepare for welding or other processes.

Stainless Steel Pipe Honing & Turning

hone pipe and tube, using a precision abrasion process in order to obtain a desired finish or close dimensional tolerance.

Heatreating & Annealing

Some grades of stainless steel pipe can be heatreated to change the mechanical properties.

Positive Material Identification (PMI)

PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.

UT Testing

In some cases, UT testing of the stainless steel plates may be required. We can assist you with this requirement.

10. Ultrasoic measuring of Wall Thickness


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