The problem of burr in the cross hole of the valve body has always been a problem that plagues enterprises! How to solve this problem has always been the topic of research. Here are a few solutions for your reference: Option 1, using targeted tools (such as the burroff tool that has just been developed); Option 2, using chemical removal methods, the disadvantage is damage to the surface of the product; The use of explosion method to remove burrs, the disadvantage is to buy a specific machine, the cost is high; scheme four; the use of foreign burr-removing brush, the disadvantage is that the removal is not clean; scheme five; the use of foreign deburring tools, the disadvantage is after-sales service Not at the same time, the improvement of the product is slow, and it takes a long time from the customer response to the improvement. The above views are personal opinions and are for reference only. If you have a glitch problem, you can contact me and provide the best solution for each manufacturer. Door Handle Spindle Expansion Sleeve Door Handle Spindle Expansion Sleeve,Expansion Sleeve,Sleeve Anchor,Steel Expansion Sleeve Greatwall Hardware International Limited , http://www.greatwall-hardware.com