S31803 S32205 Duplex Steel Pipe

CNMAX is engaged in manufacturing and exporting a qualitative range of Super Duplex Pipes that are widely used in construction & other industries.

These super duplex pipes possess high resistance against corrosion and are available in various grades and specifications.

Our range of super Duplex Steel Pipes are quality tested on various parameters before being delivered to clients. Offered at industry leading prices,

these are also customized as per the specific requirements of clients.

CNMAX has the most advanced producing and testing equipment . We can totally satisfy your requirement .

According to standard very strictly , duplex steel tubes which produced by us always have correct OD and WT tolerance . And they have more perfect corrosion ability .

Duplex stainless steel 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℃ 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.

Alloy 2205 provides pitting and crevice corrosion resistance superior to 316L or 317L austenitic Stainless Steel Tube in almost all corrosive media. It also has high corrosion and erosion fatigue properties as well as lower thermal expansion and higher thermal conductivity than austenitic.