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红包扫雷送金币 Used oil drill pipe
selling used oil drill pipe drill collar cross drill pipe
selling dz40 water well drilling pipes 42, 50 exploration drilling pipes
红包扫雷送金币product name: φ42mm drill pipe, φ50mm drill pipe
body material: dz40, baosteel r780
processing technology: the end pier head is thickened.
product performance advantages: end pier head is thicker. increase the resistance of the drill pipe,
can adapt to more complex formations.
matching locks: φ57mm locks, φ65mm locks
lock joint material: 45 40cr, 35crmo
processing technology: quenching and tempering
drilling depth: 100m-1000m
Main uses: engineering rig drilling, geological exploration, hydrogeological drilling.
Φ42, Φ50, Φ60, Φ73, Φ89 drill rods and various supporting locks, square buckles, reducers, rope core drill rods and joint