535HP1368588252minutes ago42
The market opened today. Although the performance of Zitong Pai futures was modest, the overall mar...
416HP1866021722minutes ago35
The large values of temperature are concentrated in the area between the outer tube and the roll, an...
535HP13685882510minutes ago46
Disadvantages: low output, high production cost and high price. Extrusion copper tube process is a...
535HP13685882513minutes ago42
When welding, just add enough filler metal to fill the capillary gap. Too much filler metal will on...
263HP14581662813minutes ago31
The grouting mechanism includes filling grouting, infiltration grouting, compaction grouting and spl...
535HP13685882516minutes ago46
The difference between hard copper tubes and soft copper tubes in use Hard copper tubes can only be...
161HP19639923030minutes ago38
it must be opened, otherwise the boarding bridge may be damaged.Reason for the lifting table not lo...
535HP13685882534minutes ago31
Advantages and scope of application of copper tube ground heating At present, ground heating is not...
122HP11729492142minutes ago42
The tap changer of power transformer shall also have strong insulation. kV off load tap changer is g...
535HP13685882545minutes ago40
The room temperature tensile strength of the annealed red copper sheet is ~ kgf/mm, the elongation i...