Stainless Steel Super Duplex Steel Pipe

Basic Info

Type: Stainless Steel Pipes

Standard: ASTM, AISI, GB, JIS, DIN, EN

Certification: ISO, AISI

Shape: Round

Grade: Duplex Steel

Technique: Cold Drawn

Surface Treatment: Pickled

Additional Info

Packaging: plywood case packing

Productivity: 400 Ton/month

Brand: CNMAX

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 500 Ton/month

Certificate: ISO

HS Code: 7304419000

Port: Shanghai,Ningbo

Product Description

Stainless Steel (Super) Duplex Steel

Duplex stainless steel means that ferrite and austenite each account for about 50%, generally the content of less phase also needs to reach at least 30% of stainless steel,

 Cr content is 18% to 28%, Ni content is 3% to 10% , containing Mo, Cu, N and other alloying elements. Duplex stainless steel not only has the characteristics of 

both austenitic stainless steel and ferritic stainless steel materials, but also has high strength, chloride stress corrosion resistance, pore corrosion resistance, pit pitting ability, 

such as: S31803 material resistance to pitting ( PREN32-33)

The S32750 material is resistant to pitting (PREN>40). Widely used in offshore oil, seawater desalination, chemical pipelines, reactors, heat exchangers, etc.

Material characteristics

1. Balanced two organizations - with a balanced two-phase organization with excellent overall performance.

2, Good corrosion resistance - excellent resistance to pitting, chloride corrosion resistance.

3, Excellent mechanical properties - yield strength is about 2 times that of ordinary austenitic stainless steel,

    the allowable stress is about 1.5 times that of ordinary austenitic stainless steel.

4, High and low temperature environment adaption - use temperature -50 °C ~ 300 °C