root pass meaning in Chinese
初层焊道
第一层焊道
根部焊道
根焊
Examples
- The fcaw process shall not be used for the root pass of single - sided joints
药芯焊丝电弧焊工艺不用于单面焊接接头的根部焊道。 - Gmaw short - arc tack welds shall not be incorporated into the root pass
熔化极气体保护焊-短弧点焊焊缝不能与根部焊道合成一体。 - Root pass root run
根部焊道 - The gmaw short - arc process shall not be used for welding socket welds or the root pass of o - lets and branch connections
熔化极气体保护焊-短弧工艺不适用于承插焊接或出口和分支连接的根部焊道。 - 4 double - welded groove joints shall have their root passes back gouged to sound metal on the reverse side before proceeding with welding on that side
双面焊接的坡口焊道，应在焊接前将该面底部焊道逆向刨削，直到其对面露出完好的金属。