
Slotted countersunk head bolts for structural steel bolting, for supply with hexagon nuts
出版:German Institute for Standardisation (Deutsches Institut für Normung)

专家解读视频
Slotted countersunk head bolts for structural steel bolting, for supply with hexagon nuts
出版:German Institute for Standardisation (Deutsches Institut für Normung)
专家解读视频