String data expands body stock with water expansion ring

• Main Authors: YUAN FANGLONG, DONG JIANHUA, LI MINGYING, ZHANG JIAYING, CHEN JU, ZHU YAOTING, LIU HEWEN, TIAN WEI, ZHENG AIRONG
• Format: Patent
• Language: Chinese; English
• Published: 05.01.2018
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model discloses a string data expands body stock with water expansion ring, including spiral drill tip, variable diameter steel pipe, tail end steel pipe and water expansion ring, the string data expands body stock foremost for the spiral drill tip, spiral drill tip, variable diameter st...