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底边无缝焊 无间隙焊缝
closedweld  detail>>
底边无缝焊
closed weld  detail>>
无间隙焊缝
closed weld  detail>>
底边无焊缝
closed weld  detail>>
无间隙焊根
closed root  detail>>
留间隙焊缝
open weld  detail>>
形皮口无间隙焊接
v-weld without gap v  detail>>
形坡口无间隙焊接
v-weld with gaand back strip v-weld with gap and back strip v  detail>>
无间隙对接焊缝
unspaced butted weld  detail>>
无间隙也不错接焊缝
unspaced butted weld  detail>>
无间隙
gapless zero clearance  detail>>
留隙焊缝
open weld  detail>>
钢制对焊无缝管件
steel butt-welding seamless pipe fittings  detail>>
微间隙焊接
micro-gap welding  detail>>
微隙间隙焊
microgawelding  detail>>
狭间隙焊
narrow gap welding  detail>>
小间隙焊接
narrow gap welding  detail>>
窄间隙焊
narrow-gawelding  detail>>