Cracks have been found in the flange and web splices at groovewelds in at least four Bridges.
至少在四座桥梁的翼缘板和腹板拼接坡口焊缝中发现了裂纹。
2
According to the different casing, the welding groove of all parts is classified and the form of welding groove and the welds marking number used commonly in casing are determined.