欧美在线国产精品欧美_97久久婷婷国产综合亚洲_国产中日韩一区二区三区_国产jk福利精品_亚洲aⅤ秘无码一区二区三区_91色老久久精品偷偷蜜臀_边做边叫床视频播放_国产性色强伦免费视频_欧洲成人动漫在线观看_亚洲三级毛片免费看

Influenced by the global economy in the past five years, the price of mold copper has fluctuated greatly, and the price of mold copper industry has been chaotic. Customers cannot grasp the fluctuations of global copper prices in time, resulting in different degrees of capital waste. In order to improve corporate reputation, Shigao Metal will analyze copper pricing and profits for you in accordance with mold copper production standards.
 
International Mold Copper Standard
Japan JIS-C1100 China GB-T2
Mold copper is commonly called red copper in Japan and Taiwan, and most of China is called red copper or pure copper
Density 8.96 Melting point 1083℃ Conductivity ≥90 Softening temperature ≥260 Hardness ≥80HV
 
Raw material for mold copper
No. 1 electrolytic copper raw material. Pricing standards-Shanghai Nonferrous Metals Network or Yangtze River Nonferrous Metals official website announced before 12 o'clock every day.
 
Production Process
No. 1 electrolytic copper is vacuum smelted to produce copper ingots (thick rods). The copper ingots are formed by a rolling mill of more than 2500 tons, and the hard state is adjusted through aging treatment.