China Qt4-15 Fully Automatic Concrete Block Making Machine ...
3. Advantanges of QT4-15 automatic brick machine (1). Key point: the Mould: Moulds are made of 16 # Manganese steel and being processed via the procedures of carburizingnitriding and quenching which gurantee moulds can be used 100 thousand times The strength of moulds is HRC54~58 and each mould shall be tested by QC before out of factory.
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