刀片为四个锯齿状刀刃，与备用的3个刀片相同。
Blades have four cutting edges that are serrated, same as having 3 spare blades.
选任优质锯齿型开槽刀片，保证开槽光洁度。
Top-quality steel blades are used to guarantee smoothness in grooving.
采用锯齿形刀片，同时可配打孔装置。
The zigzag blade is adopted. A hole punching device can be equipped as an option.
焊 接：各种金属制品钎焊、各种刀具刀片、锯片锯齿的焊接、钢管、铜管焊接、同种异种金属焊接；
Welding: all kinds of metal products brazing, all kinds of tool blade, saw tooth welding, steel pipe, copper pipe welding, the same kind of dissimilar metal welding;
焊 接：各种金属制品钎焊、各种刀具刀片、锯片锯齿的焊接、钢管、铜管焊接、同种异种金属焊接；
Welding: all kinds of metal products brazing, all kinds of tool blade, saw tooth welding, steel pipe, copper pipe welding, the same kind of dissimilar metal welding;
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