
Welding consumables - Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels - Classification
出版:International Organization for Standardization

專家解讀視頻
Welding consumables - Wire electrodes and wire-flux combinations for submerged arc welding of non alloy and fine grain steels - Classification
出版:International Organization for Standardization
專家解讀視頻