坡口焊 meaning in Chinese

groove welding

Flare groove welding
喇叭形坡口焊
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。
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。