The thickness range of grade 09CuPCrNi-B

Is there a difference between seamless steel pipe and ordinary steel pipe? The general requirements of grade 09CUPCRNI-B ordinary steel pipe are not so high, which are used in ordinary buildings or structures. According to the different materials and standards, seamless steel pipe will have different application environment. For example, seamless steel pipe for boiler requires pressure value. Seamless steel pipe for petroleum cracking also has its own corresponding national standard. Seamless steel pipe can be divided into fluid pipe, gas cylinder pipe, boiler pipe, oil pipe, automobile steel pipe, ship pipe, structural pipe, etc.

09CuPCrNi-A weather-resistant steel plate is one of weather-resistant steel (that is, atmospheric corrosion-resistant steel), used in sulfur-containing flue gas, air preheater, economizer, boiler air preheater, to prevent the vicinity of acid dew point, etc. Commonly used is low temperature weathering steel, which has a strong ability to resist low temperature corrosion. This type of steel grade 09CUPCRNI-B has a protective effect against corrosion.

The sulfur element (S element) comes from the ore and fuel coke of steelmaking. It is a harmful element in grade 09CUPCRNI-B etc. steel. Sulfur exists in steel in the form of iron sulfide (FeS). FeS and Fe form a low melting point (985℃) compound. The hot working temperature of steel is generally above 1150 - 1200℃, so when the steel is hot working, the premature melting of FeS compound causes the workpiece to crack, which is called "hot brittleness". It reduces ductility and toughness of steel and causes cracks during forging and rolling. Sulfur is also detrimental to welding performance and reduces corrosion resistance.

China's widest bar heating furnace was completed and put into production! During the construction of the heating furnace, the technical experts of Shiheng Special Steel and the technical experts of MCC Southern Thermal Engineering Co., Ltd. demonstrated and designed the bar heating furnace with the widest furnace width, the longest billet and the largest output in China. The heating furnace adopts a number of green and intelligent technologies: the wave-shaped roof design is adopted to strengthen the radiation heat exchange in the furnace and improve the heating efficiency.