根部焊道 meaning in English
root bead
root layer
root pass/ root run
root run
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。 - 5 all single - sided groove joints in nickel alloys , stainless steel and ferritic alloys containing more than two ( 2 ) percent chromium shall be welded using a gas tungsten - arc root pass with an inert gas back purge
铬含量超过2 %的镍合金、不锈钢和铁素体合金的单面坡口焊道用钨极气体保护焊，其根部焊道用惰性气体反吹。