What is a Hole Opener Drill Bit? Complete Guide for HDD & Rock Drilling
A hole opener is a tool used to enlarge a pilot hole to a larger diameter. It is commonly used in HDD, oil and gas, mining, and hard rock drilling. The right hole opener depends on formation type, bore size, rig capacity, and drilling conditions.
Daily Tungsten Carbide Powder Price Report | Apr.10,2026
Tungsten Carbide powder prices continue to climb, having already surpassed the threshold of 2,000 RMB (approximately 289.85 USD) per kilogram. The national tungsten mining quota for 2026 has been set at 115,000 tons, representing a further 8% reduction compared to 2025. This marks the third consecutive year of tightening quotas. Consequently, Tungsten Carbide powder prices […]