Products List
- Electric hammer drills we manufature are made of 40Cr tipped with hard metal (YG8) and get good heat treatment as well as surface treatment. Main technical conditions of masonry dr...
- Aug 20, 2006
- HSS Twist drill Bits we manufature are made from HSS with good heat treatment and surface treatment. Main technical conditions of twist drill. Manufacturing process: Rolled, milled...
- Aug 20, 2006
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