SDS & Core Drilling Resources
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A technical comparison of five leading SDS-Plus premium lines rated by head architecture, standards compliance, rebar survivability, and procurement value — with a frank China factory perspective on what OEM can and cannot replicate.
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The four cutting edges on your SDS-Plus drill bit may look identical from outside — but how those edges are made determines lifespan, accuracy, and failure mode. A complete technical breakdown.
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Friction welding, controlled-atmosphere brazing, resistance friction welding (RFW) — a Chinese SDS-Plus manufacturer explains how full carbide heads are joined to steel bodies, compares Bosch, Hilti, and Milwaukee processes, and lays out the OEM sourcing opportunity for distributors.
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SDS-Plus vs SDS-Max compared by impact energy (J), carbide grade requirements, cost per hole, and the 26 mm switchover myth. The technical guide that goes beyond shank diameter.
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Complete SDS-Max drill bit size chart: every standard diameter from 14 mm to 80 mm with overall length, working length, and carbide grade recommendations. Essential reference for distributors and machine shops.
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The complete guide to SDS Plus drill bit lengths. Understand the difference between overall length and working length, how to match length to anchor embedment depth, and what to stock for different construction applications.
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Match SDS Plus drill bit diameters to the right rotary hammer energy class. Includes joule ratings, diameter recommendations, and market segmentation for European and US distributors.
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Evaluate SDS drill bit factories by head construction, joining route, body steel, shank fit and batch QC before approving an OEM supplier.
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How to choose bush hammer bits for concrete texturing. Compare carbide-pin and integral steel-tooth construction, mesh belt furnace brazing, 16, 20, 25, 30, and 45 tooth configurations, SDS-Plus vs SDS-Max, anti-slip, bonding prep, and decorative applications.
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Technical comparison of virgin and recycled tungsten carbide for drill bit manufacturing. Covers WC purity, grain size, porosity, hardness, TRS, and real-world performance differences. Includes supplier verification checklist for B2B buyers.
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Compare the three SDS hammer-drill head geometries — 2-cutter (self-centering tip), 4-cutter cross (ZHMAX-5X) and multi-segment 4-cutter (ZHMAX-7): speed, hole quality, rebar tolerance and how to stock them.
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Choose the drill diameter, hole depth, cleaning method and setting procedure from the selected concrete anchor system. Compare mechanical and adhesive installation steps.
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