| 1. | Development of local vacuum electron beam welding machine for flange circumferential weld
法兰环缝局部真空电子束焊机的研制 |
| 2. | Edge preparation for welding ; matching of inside diameter for circumferential welds on seamless pipes
焊缝预加工.无缝管圆周焊缝内径的配接 |
| 3. | Preparation of welds ; matching of inside diameters for circumferential welds on welded pipes
焊缝预加工.第3部分:焊接管道圆周焊缝的内径配合 |
| 4. | Preparation of welds ; part 4 : matching of inside diameters for circumferential welds on seamless pipes of stainless steels
焊缝预加工.第4部分:不锈钢无缝管圆焊缝内径配合 |
| 5. | Longitudinal and circumferential weld seams are pl inspected for class 150 # , for other classes will be inspected with x - rays and / or us
过滤器之纵向和周围焊接缝是染色探伤检查，其它将以x -射线和/或超音波检查。 |
| 6. | In the case of longitudinal and circumferential welds for pressure vessel shell courses , the cladding shall be removed by machining , unless otherwise agreed in writing by secco
经向和周向焊接压力容器筒体时，应通过机加工清除复层，除非赛科公司另有书面指示。 |
