A reliable way to improve the quality of spiral pipe was the substitution of high frequency butt welding for HF lap welding.
高频对焊代替高频搭焊是提高中直径螺旋焊管质量的可靠途径。
According to the different product structure, butt fusion welding process and lap seam welding process are used to respectively weld left and right half shell of upper body.
上体左、右半壳直焊缝视产品结构不同，分别采用对接熔化焊和搭接缝焊工艺。
The results shown that a deformation-free joint with good weld surface appearance can be obtained with suitable welding conditions for butt-joint and lap-joint of the dissimilar materials.
结果表明，当焊接工艺参数合适时，可以获得表面成形良好、无变形的铝合金与钢的对接接头和搭接接头。
Butt for all the modesty of her spreading skirts, the demureness of her netted smoothly into a chignon and the quietness of small white hands folded in her lap, her true self was poorly concealed.
可是不管她那散开的长裙显得多么端庄，不管她那梳得光滑的后髻显得多么老实，也不管她那叠在膝头上的一双雪白的小手显得多么安静，总都掩饰不了她的真性情。
The most commonly used joint configurations are the lap, scarf, and butt joints.
最常用的连接结构是搭接，嵌接和平接。
While the butt weld lap and the weld reinforcement exist simultaneously, the detecting methods of reinforcements are described.
叙述了对按焊缝错边与焊缝余高同时存在时的焊缝余高检测法。
While the butt weld lap and the weld reinforcement exist simultaneously, the detecting methods of reinforcements are described.
叙述了对按焊缝错边与焊缝余高同时存在时的焊缝余高检测法。
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