Compared with austenitic stainless steel pipe and duplex stainless steel pipe

　　The universality and versatility of the application are not as good as austenitic stainless steel pipe, for example, the temporary application of the temperature must be controlled below 250.

　　Its toughness is lower than that of austenitic stainless steel pipe, and the cold, hot working process and forming performance are not as good as that of austenitic stainless steel pipe.

　　In the presence of medium temperature brittleness zone, it is necessary to strictly control the heat treatment and welding process system, in order to prevent the harmful phase of the present, damage performance.

　　The disadvantage of duplex stainless steel pipe and austenitic stainless steel pipe is that there are a large number of ferrite microstructure in duplex stainless steel pipe.

　　Compared with ferritic stainless steel pipe, the advantages of duplex stainless steel pipe are as follows:

　　The comprehensive mechanical properties are higher than that of ferritic stainless steel pipe, especially plastic and toughness. Brittleness is not as sensitive as ferritic stainless steel pipe.

　　In addition to the stress corrosion resistance, other local corrosion resistance is better than that of ferritic stainless steel pipe.

　　The performance and cold forming performance of the cold working process are much better than that of the ferritic stainless steel pipe.

　　The welding performance is far better than ferritic stainless steel pipe, usually without preheating before welding, without heat treatment after welding.

　　The application range is wide ferritic stainless steel pipe.

　　Compared with stainless steel pipe, the duplex stainless steel pipe has the advantage of being a large amount of austenite in duplex stainless steel pipe. Compared with ferritic stainless steel pipe, the other disadvantage of duplex stainless steel pipe is the high content of alloying elements, the price is relatively high, and the general ferritic stainless steel pipe does not contain nickel.

　　To sum up, we can briefly see duplex stainless steel pipe use properties and processing properties of the whole picture, with its superior mechanical and corrosion resistance of the comprehensive performance to win the favor of users, has become not only save weight and save investment of excellent corrosion resistant engineering materials.

　　SRT is a Group Company. Full name is Hebei Shengtian Group Reaguan Pipeline Co., Ltd, which mainly produce and export seamless steel pipes, spiral  steel pipes, welded steel pipes and oil pipes  .