The 14th China Beijing International Coal Equipment and Mining Technology Equipment Exhibition
Safe green mining and clean and efficient use are the development direction of the world coal industry. As an important basic energy source and raw material for China, coal will not change its main...
2018 The 14th China Beijing International Coal Equipment and Mining Technology Equipment Exhibition
Safe green mining and clean and efficient use are the development direction of the world coal industry. As an important basic energy source and raw material for China, coal will not change its main...
2018 The 14th China Beijing International Coal Equipment and Mining Technology Equipment Exhibition
Safe green mining and clean and efficient use are the development direction of the world coal industry. As an important basic energy source and raw material for China, coal will not change its main...
What should be paid attention to when welding galvanized steel pipe
1. Need to polish in the early stage However, the galvanized layer of the weld must be polished away, otherwise bubbles, trachoma, and false welding will occur. It also makes the weld brittle and the...
Mr. Liu Bin
