Basic forms and sizes of weld grooves for gas welding manual arc welding and gas - shielded arc welding 气焊手工电弧焊及气体保护焊焊缝坡口的基本形式与尺寸
The gas - shielded arc welding materials can be classified mainly into solid wires and flux - cored wires ( fcws ) , and of these wires , fcw has been increasing in uses year by year because of its excellent workability and efficiency 自药皮焊条开始焊接材料已发展成为更高效的埋弧焊焊材和气保焊焊材,并能更容易地结合自动化焊接和机器人焊接。