30 mesh screen

The use of electric welding mesh is very wide, can be used in many places. In the field of construction, especially the wall crack, has played a very important role, the traditional construction, is to put on mortar directly onto the wall, after such a long time, will appear fall off and fracture phenomenon, in order to prevent the occurrence of this phenomenon, must use welded wire mesh before rendering, welded wire mesh is fixed to the wall, above the plastering construction, Can ensure that the wall level for a long time, not easy to crack phenomenon.

If the zinc coating is good, but in 3% nitric acid when the light, the coating has dark shadow, passivation occurs when the film is brown, may be caused by foreign metal impurities such as copper or lead in the galvanizing liquid. When problems occur in the process of galvanizing large coil galvanized wire, the temperature and current density are checked first, and then the content of zinc and sodium hydroxide in the plating solution is measured and adjusted through the analysis of the plating solution. Whether DPE content is low can be determined by hull cell test.