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俄罗斯德聂伯罗波特罗夫斯基市冶金研究所提出了螺旋形厚壁波纹管的制造方法,这种厚壁波纹管主要用于主管道的自补偿。制造方法包括:从带卷中把带料打开,并将各带料对接成连续长带;沿带料长度方向周期地成形,使平滑区和带纵向波纹的成形区相互交替;将成形的钢带弯成管,?
Russia Dnepropetrovsk City Metallurgical Institute proposed a spiral thick-walled corrugated pipe manufacturing method, the thick-walled corrugated pipe is mainly used for the main pipeline self-compensation. The method of manufacture includes opening the tape from the coil and butting the tapes into a continuous length of tape, periodically forming along the length of the tape such that the smoothing area and the longitudinally corrugated forming area alternate with each other, With curved tube,?