drill rod for sale Spiral Geological Drill Rod
With professional and productive factory, HAINAISEN is one of the leading China spiral geological drill rod manufacturers. Welcome to wholesale spiral geological drill rod from us, we always have cheap products to offer you.
Geological spiral drill rod
Spiral craft: prestressed wire winding and welding with single strip steel or double strip steel, based on the big torque of geological drill rod.
Material of rod body: geological alloy pipe
Material of connector: first-class alloy constructional steel
Craft: thermal refining in vacuum, which greatly improves the fatigue resistance and shearing strength.
Rod body craft: friction welding, which improves the bending strength and the firmness of the drill rod.
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