
Round steel link chains - Round steel link chains, pitch 5d, for chain conveyors Part 1: Grade 3, quenched and tempered
出版:German Institute for Standardisation (Deutsches Institut für Normung)

專家解讀視頻
Round steel link chains - Round steel link chains, pitch 5d, for chain conveyors Part 1: Grade 3, quenched and tempered
出版:German Institute for Standardisation (Deutsches Institut für Normung)
專家解讀視頻