底焊 meaning in English

back welding
backing weld
weld on bottom
welding on bottom

Backing weld before making main wel back weld
打底焊道
When doing a grooving and hammer breaking experiment on a sample in the technology assess teal of fibrin root welding , find that fibrin backing weld will easily produce a special root incomplete fusion flaw
摘要在进行一次纤维素根焊的工艺评定试验的过程中，对取样进行刻槽锤断实验时，发现采用纤维素打底焊容易产生一种特殊的根部未熔合缺陷。
Abstract : after anticorrosion metal - power spray welding was carried out for prevention of corrosion , the matched anticorrosion electrode is used to make backing weld . the new process can replace the traditional process wi th internal repaired mouth
文摘:管道焊前对管端进行耐蚀金属粉末喷焊防腐，然后采用与之匹配的耐蚀焊条打底焊，从而取代焊后焊接区内补口防腐的传统施工工艺，达到了管道焊后可不再进行内补口防腐。
Argon welder , oxygen welder , co2 welder , electric welder , allumen composite sole welder and ultrasonic plastic welder total : 14 sets braze , iron welding stainless steel welding , plastic welding , welding of composite sole of stainless steel aluminum , direct welding , roll welding , spot welding
氩弧焊机氧气焊机二氧化碳焊机电焊机铝合金复合底焊机超声波塑料焊机共计14台铜焊铁焊不锈钢焊塑料焊不锈钢铝复底焊直焊滚焊点焊