hydraulic reducing diameter machine

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SJ-20 hydraulic reducing diameter machine CE quality bar necking machine

SJ-20 hydraulic reducing diameter machine CE quality bar necking machine

steel rod reduce diameter machine for producing mine anchors,anchor screws and long rod screws.the device can compress the material into the diameter of the thread at a time, and enhance the density and length of the material,and improve the tensile strength of the bolt.

keywords：

hydraulic reducing diameter machine

CE quality bar necking machine