45# analysis of seamless steel pipe industry problems

　　The chemical composition specified in the general standard refers to the smelting component. It refers to the chemical composition of the 45# seamless steel pipe after smelting and pouring. In order to make it representative, the analysis is carried out according to the specified standard method (GB/T223). The results must conform to the standard chemical composition range and be the basis for customer acceptance.
　　
　　Finished ingredients:
　　
　　The finished product component is also called the verification analysis component. It is a chemical obtained by drilling or planing the sampling chips from the finished 45# seamless steel pipe according to the specified method (GB/T222) and analyzing according to the specified standard method (GB/T223). ingredient. 45# Seamless steel tube in the crystallization and subsequent plastic deformation, due to the uneven distribution of alloying elements in the 45# seamless steel tube (segregation)
　　
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　　It is understood that the seamless pipe of No. 45 is generally used in the production process of alloying process technology. The seamless pipe of No. 45 can be rolled after the heating process, and the rolling process and production of hot rolled round The steel is the same. So how should we store the No. 45 seamless pipe?
　　
　　The 1.45 seamless pipe can be stored in outdoor and other venues.
　　
　　2. For some of the 45th seamless pipes, store them in a well-ventilated site as much as possible, but be consistent.
　　
　　3. For some expensive and highly corrosive metal products, they can be put into storage.
　　
　　4. The place where the No. 45 seamless pipe is kept should be clean, ventilated, and drained, and away from harmful gases and dust. There should be no debris on the field.
　　
　　5. The warehouse must not be placed together with materials that are corrosive to steel. Different types of steel should be stored separately to avoid contact corrosion.
　　
　　6. The warehouse should adopt an ordinary closed warehouse, which has a warehouse with a wall, tight doors and windows and ventilation.
　　
　　7. Pay attention to ventilation on sunny days, keep moisture in case of rain, and always maintain a proper storage environment.
　　
　　45# Seamless steel pipe industry is not only related to the national economic development, but also related to this society and people's livelihood. At present, the steel industry problem is the first to overcapacity.
　　
　　According to the survey, during the “Twelfth Five-Year Plan” period, China’s steel output reached 1.13 billion tons, most of which have a debt ratio of over 70%, and the utilization rate of crude steel capacity has decreased. The production capacity of 45# seamless steel pipe has been regional, The structural excess has gradually evolved into an absolute excess.