On November 1st, our company organized some of company staff to visit Zhengzhou Children Welfare Institute, and gave children cookies and toys, as well as concerns to the Children. With the development of the society, disabled children gets increasing concerns and help from all walks of life. Fortunately, Chinese Government gives high concern to the handicapped children and has built Children Welfare Institutes all over the country to guarantee their lives.
20 # material is a high-quality low-carbon carbon steel, cold-extruded, carburized and hardened steel. ASTM A514 quenched and tempered steel, 20 # material has low strength, good toughness, plasticity and good weldability. Chemical composition of 20 # round steel bar: C: 0.17 ~ 0.23, Si: 0.17 ~ 0.37, Mn: 0.35 ~ 0.65, S: ≤0.035, P: ≤0.035, Cr: ≤0.25, Ni: ≤0.30, Cu: ≤0.25. 20# carbon steel mechanical properties: Shear strength 275 ~ 392MPa, Tensile strength is 253 ~ 500MPa, elongation min. 25%.
Oxygen is a harmful element in ASTM A514 quenched and tempered steel steel. With the increase of oxygen content, the strength of ASTM A514 quenched and tempered steel steel increased, but the plasticity, especially the toughness, decreased significantly, and the weldability became worse. The presence of oxygen causes hot brittleness of ASTM A514 quenched and tempered steel steel.
After 1975, our equipment includes blast furnaces, electric furnaces, vacuum refining furnaces, and electroslag furnaces. The product varieties are relatively complete. Plates, ASTM A514 quenched and tempered steel tubes, wires, belts, and profiles have a certain scale, including magnetic, elastic, expanded, bimetal and other precision alloy materials for national defense and electronics industries. In 1982, these plants produced 364,000 tons of ASTM A514 quenched and tempered steel steel and 542,000 tons of steel.
The company has a group of experienced steel plate continuous processing line construction, production management, operation and professional and technical personnel. The company is a modern enterprise integrating scientific research and development, production processing, sales and service. Our main products include hot rolled plates, seamless pipes, ASTM A514 quenched and tempered steel and steel structures. At the same time, it also adheres to international standards and adheres to the international line.
Today, the prices of black commodity futures market fluctuated upward. The mentality of the spot market is optimistic, and the quotations of ASTM A514 quenched and tempered steel merchants continue to rise. However, downstream users are more cautious in purchasing, and they basically purchase on demand. Some speculative demands have the willingness to replenish at low prices. At present, there are relatively few ASTM A514 quenched and tempered steel inventory resources in the market. In addition, the cost of resources in the later stage is relatively high, so businesses are not willing to sell at low prices. On the whole, there are not many short-term new arrival resources, and the shipping pressure of merchants is not big, and the ASTM A514 quenched and tempered steel price still has certain support. It is expected that the price of ASTM A514 quenched and tempered steel will fluctuate and be stronger tomorrow.
