Since laser weld is narrow, and the anodeprotection effect of zinc on the base metal was not destroyed, the joint has good corrosion resistance.
激光焊缝窄，基材锌层阳极保护作用得以保存，激光焊接板仍具有较好耐蚀性。
2
For pipeline corrosion protection, anticorrosive coating of composite structure with3 coats of PE and sacrificial anodeprotection should be adopted.
管道防腐宜采用三层PE复合结构防腐涂层牺牲阳极保护。
3
At present, most strong sulfuric acid coolers used in the acid circulation system of sulfuric acid plants are stainless steel acid coolers with anodeprotection in China.