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Product description
● The body of the drill pipe adopts the processing technology of the smooth drill pipe, and the joint is welded by friction welding technology to ensure the strength of the drill pipe itself. The spiral blade adopts double-sided welding, and the blade guide groove is deep, which improves the self-discharge ability, and is more suitable for drilling without adding water. In addition, the joint adopts a hexagonal joint, which can realize forward and reverse construction and is not easy to jam.
Main technical parameters
Technical parameters | |||
Outer diameter | φ68mm | φ89mm | φ110mm |
Length | (1000~1500)mm | ||
Connection mode | 36 Hexagonal | 41 Hexagonal | |
Minmum inner bore | φ50mm | φ63.5mm | |
Unit weight | 12kg | 18kg | 19kg |
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隔绝式压缩氧自救器
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