专利名称：STAINLESS STEEL DRILL SCREW
发明人：RAMON ALLAN BERG,GEORGE ARTHUR FRIEDLAND,LOWELL ALRS BJORKLUND 申请号：AU4879279
申请日：19790709
公开号：AU522336B2
公开日：
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企业绩效考核方案19820527戴尔电脑开不了机怎么办
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麻雀的作者是谁>花生泡醋的功效摘要：A drilling and tapping screw constructed from a 300 ries stainless steel material which has the corrosive resistance of the high chromium high nickel content stainless steel while still being capable of drilling through carbon steel materials or the like. The product is constructed by forging the point at very slow forging speeds, resulting in a drill screw which is a predominantly martensitic structure at the drill point while predominantly austenitic in the shank and head regions.
申请人：ILLINOIS TOOL WORKS INC.
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