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  • Wenzhou Shangle Steel Co., Ltd.
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  • Wenzhou Shangle Steel Co., Ltd.
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ASTM A790 UNS 31803 / 1.4462 Duplex Steel Seamless Pipe Thick Wall

  • ASTM A790 UNS 31803 / 1.4462 Duplex Steel Seamless Pipe Thick Wall
Place of Origin CHINA
Brand Name Shangle
Certification PED,IS09001
Model Number 12.7
Minimum Order Quantity Negotiable
Price Negotiable
Packaging Details Woven Packing
Delivery Time 30DAYS
Payment Terms L/C, T/T
Supply Ability 500TONS/30DAYS

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Product Details
Material 304 ,304L 310 321 316 316L Standard AISI, ASTM, DIN, EN, GB
Shape SCH10, SCH20, SCH30, STD, SCH40, SCH60, SCH80 Technique Cold Draw
Application Oil, Petroleum/Power Package Woven Packing
Highlight

Duplex Steel Seamless Pipe

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1.4462 Duplex Steel Seamless Pipe

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ASTM A790 UNS 31803 Pipe
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Product Description

ASTM A790 S31803/S31500 (1.4410)Duplex Stainless Steel Pipes

 

ASTM A790 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe. Duplex stainless steel pipe (DSS) is featured with 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. Some steels also contain the alloy elements such as Mo, Cu, Nb, Ti and N, etc. Comparing with ferritic stainless, duplex stainless steel has higher plasticity, ductility and better intergranular corrosion resistance and weldability. It keeps same 475°C brittleness with ferritic stainless and high thermal conductivity. Duplex has improved yield strength, resistance to intergranular corrosion, stress corrosion, corrosion fatigue and abrasion & corrosion compared with austenitic stainless steel.

S31500 material is a duplex (austenitic-ferritic) stainless steel with characters as High resistance to stress corrosion cracking (SCC) in chloride, bearing environments, Good resistance to general corrosion and pitting, High mechanical strength, roughly twice the proof strength of austenitic grades, Good resistance to erosion corrosion and corrosion fatigue, Physical properties that present design advantages, Good weldability

 

Standards: ASTM/ASME A789/SA789, A790/SA790,A450,A530

Material: UNS S31803(Cr22Ni5Mo3/1.4462)/2205,UNS S32750(1.4410),UNS S31500(Cr18NiMo3Si2),

UNS32760(1.4501)

 

 

Chemical Composition

Grade

C

max

Si

max

Mn

max

P

max

S

max

 Cr Ni Mo N
UNS S32750 0.030 0.8 1.2 0.030 0.015 24.0-26.0 6.0-8.0 3.0-5.0 0.24-0.32
UNS S31803 0.030 1.0 2.0 0.020 0.020 21.0-23.0 4.5-6.5 2.5-3.5 0.08-0.20
UNS S31500 0.030 1.0 1.2-2.0 0.030 0.030 18.0-19.0 4.5-5.5 2.5-3.5 0.05-0.10

 

 

Physical Properties

Grade Y.S.MPa min T.S.Mpa min Elongation % Hardness HRC
UNS S32750 550 800 15 20
UNS S31803 450 620 25 20
UNS S31500 440 630 30 20

 

 

Duplex Stainless Steel Pipe Application:

 

Chemical processing, Transport and Storage.

Oil and gas exploration and offshore rigs.

Oil and gas refining.

Marine environments.

Pollution control equipment.

Pulp and paper manufacturing

Chemical process Plant

 

Some of the quality tests carried out by us includes:

 

Corrosion Test Conducted only when specially requested by the client
Chemical Analysis Test done as per required quality standards
Destructive / Mechanical Testing Tensile | Hardness | Flattening | Flare | Flange
Reverse-bend and Re. flat tests Carried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
Eddy Current Testing Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing 100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
Air Under Pressure Test To check any evidence of air leakage
Visual Inspection After passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections

 

 


Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

  • Eddy Current Testing
  • O.P Testing
  • Radiography Testing
  • Corrosion Testing
  • Micro Testing
  • Macro Testing
  • IGC Testing
  • Ultrasonic testing
  • Liquid Penetrate testing
  •  

 

Tags:

Stainless Steel 2507 Seamless Pipes

1.4410 Seamless Pipes

ASTM A790 UNS S32750 Tube