A particular device of location and compaction for welding by one side in shape by bothsides was designed according to the enterprises requirement in steel plates butt joint.
针对某企业需求的平板对接，为解决大型钢板焊接不易翻转的难题，设计了一种单面焊双面成形定位压紧小车。
2
Owing to the small diameters of conduit pipes and bracing tubes, the girth welding has to be done with one side weldingbothsides formation technology.
海洋平台构件中的导管、撑管，因管径小，其环焊缝只能采用单面焊双面成型焊接工艺。
3
In this paper the HAZ weld thermal cycles of the welding by bothsides submerged arc welded steel pipe were reproduced by the dislocation overlap weld method.