标 准 编 号：BS 7670-2-1997 简体中文标题：电阻凸焊的钢螺母和螺栓.焊接螺母和螺栓的焊接规范 繁体中文标题：电阻凸焊的钢螺母和螺栓.焊接螺母和螺栓的焊接规范 English Name：Steel nuts and bolts for resistance projection welding - Specification for welding of weld nuts and weld bolts...