土层捞砂斗
可选加长直筒体设计,防止钻进时斜孔 ;
内置防吸钻流水孔,依工况增加裙边 ;
适用地层:淤泥层,砂砾层,粉(粘)土层,强风化岩层等;
1.Cylindrical barrel or Conical barrel(optional)
2.Throughout ventilation hole
3.Hard facing strips for better wear protection
4.Kelly box: 130mm,150mm,200mm(optional)