canister filter particularly for pharmaceutical industries of food and fine chemicals and electronic

摘要

is in a metal canister filters comprising a tubular elongated body to act in at least a filter and a domed portion prepared to close one end of the body, tubolare, the dome portion and the tubular body forming one piece stainless steel imbutito.the procedure consists of making a cold stamping a sheet of stainless steel to form a single piece molded to bell.and submit to annealing the piece to bell, and submit the surfaces around the piece and lapping at a low temperature.