Characteristics of drilling tools: The cylinder ring is cut to release the rock confining pressure, and the trident follows suit to break; Strata with rich fissure development, trident enhances slag carrying capacity; Applicable strata: gravel soil layer, strongly weathered rock layer, moderately weathered rock layer;
Characteristics of drilling tools: Cylinder ring cutting releases rock confining pressure; Cutting tooth step crushing and grinding drilling; Small drilling tools have a high core extraction rate, while large drilling tools are graded and broken together; Applicable strata: backfill layer, moderately weathered rock layer, bedrock layer;
Characteristics of drilling tools: The small cylinder is cut in first, and the large cylinder drill follows the ring cutting to release the rock confining pressure; Cutting tooth step crushing and grinding drilling; Small drilling tools have a high core extraction rate, while large drilling tools are graded and broken together; Applicable strata: gravel soil, pebble layer, moderately weathered rock layer;
Characteristics of drilling tools: Cylinder ring cutting releases rock confining pressure; Roller drill teeth are used for rolling and grinding drilling, resulting in minimal wear and tear on the drill teeth; Small drilling tools have a high core extraction rate, while large drilling tools are graded and broken together; Applicable strata: medium and light wind layers, hard rock layers, and ultra hard foundation rock layers;
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