S31803, S32205, S32750, S31500

ASTM A790/A790M; ASME SA790/SA790M

OD 17.15～ 168.28mm                

WT 1.65～2.11mm(Sch 5S)

WT 1.65～3.4mm(Sch 10S)

WT 2.31～7.11mm(Sch 40S)

WT 3.2～10.97mm(Sch 80S)

ASTM A789/A789M; ASME SA789/SA789M; GB/T 21833

OD 15.88～ 50.8mm                

WT 0.89～4.0mm

ASTM A790/A790M; ASME SA790/SA790M

ASTM A789/A789M; ASME SA789/SA789M; GB/T 21833

The Duplex material is a kind of ferrite-austenitic duplex stainless steel, which is integrated conducive properties both of ferrite and austenitic and provided with higher intensity as well as tenacity;

On the basis of high content of chrome and molybdenum, the duplex material is endowed with all sorts capability of corrosion;

The duplex material possess low heat expanding while its conductivity is higher than austenitic stainless steel;

The Duplex material owns good jointing property.

Exchangers and pipelines used in the equipment of petroleum production, processing and transportation/ Crude oil, natural gas and sea water desalination/ chemicals processing and transportation equipment/ chloride solution processing, treatment and transportation/ Chemical tankers, oil tankers and water processing pipelines