By using combined weld operating technique, not only ensured the requirement of weld quality, but also reduced the cost and period of manufacture.
采用组合焊接操作技术，即保证了焊缝焊接质量要求，又大大节约了制造成本，并缩短了制造周期。
2
The test and analysis show that the period of frames in- crease in turn for the weld connection's, the end-plate connection's and the angle connection's steel frame respectively.