Big anchor solenoid seam style stock

The utility model relates to a big anchor solenoid seam style stock, it includes that the outer wall has a tapered tubular body of rod, the tubular body of rod have the turn -up of flanging form than the butt, set up on the tubular body of rod and move towards unanimous pipe seam with the tubular bo...

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Bibliographische Detailangaben
Hauptverfasser:	YU PENGYONG, KANG WENMING, GAO YONGSHENG, PENG YOUJIE, LI WENYU, XU HONGLEI, LYU ZHENGUO, SHI SHENGTAO, WANG JIEYAO, WANG YUQIU, GAO CHUNGUO
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING FIXED CONSTRUCTIONS GALLERIES LARGE UNDERGROUND CHAMBERS MINING SHAFTS TUNNELS
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