Duplex stainless steel pipe has good welding performance. Compared with ferritic stainless steel and austenitic stainless steel, it is not like the welding heat affected zone of ferritic stainless steel. 

Due to the severe coarsening of grains, the plasticity and toughness are greatly reduced. It is also not as sensitive to welding hot cracks as austenitic stainless steel.

Duplex stainless steel pipe also has good local corrosion resistance. Compared with austenitic stainless steel with equivalent alloy content, its wear resistance and fatigue corrosion resistance are better than austenitic stainless steel.

With the development of the times, due to its special advantages, duplex stainless steel is widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, paper making machinery and other industrial fields. In recent years, it has also been studied for bridge load-bearing structures. field with good prospects for development.

Duplex stainless steel is not only used in various industrial fields, such as pulp and paper, onshore and offshore oil and gas industry, chemical processing industry, transportation industry (chemical tankers and tankers), pharmaceutical and food industry, and construction industry. In addition, duplex stainless steel is also used in the production of reaction vessels, various industrial equipment and pipelines.

In most applications, duplex stainless steel is considered to be a cost-effective material, and the most important application is in hot aqueous solutions containing chloride ions where austenitic stainless steels do not have sufficient resistance to pitting corrosion and stress corrosion cracking. Equipment such as: heat exchangers, condensers and various containers.

We are a well known worldwide supply and export 300 series stainless steel pipe in following countries：,Italy, Philippines, France，Ireland, Portugal, Gambia, Thailand, Ukraine, United Kingdom, Netherlands, South Africa, Spain, Turkey, Libya, Romania, Puerto Rico, Azerbaijan, United Arab Emirates, Pakistan, Ghana, Slovakia, Germany, Saudi Arabia, Afghanistan, Bolivia, Switzerland, Bangladesh, Taiwan, Oman, Egypt, Greece, Norway, Singapore, Bulgaria, Estonia, Belgium, Yemen, Hong Kong, Ecuador, Sri Lanka, Nepal, Belarus, Finland, Gabon, Iran, Canada, Argentina, Lebanon.