Precision-engineered for masonry drilling — ultra-rigid tungsten carbide construction, 33mm total length, plain finish, manufactured to ISO 8062 and DIN 333 standards in China.
The Electric 45-1.2 E1SERDI is a high-performance tungsten carbide center drill bit engineered specifically for demanding masonry applications — including reinforced concrete, brick, block, and stone. With a precise 33mm total length and optimized geometry (point angle: 45°, shank diameter: 1.2mm), it delivers exceptional centering accuracy, chip evacuation, and extended tool life under high-torque conditions.
Manufactured in our ISO-certified facility in Hunan , Zhuzhou— just 10km from Shenzhen — this bit exemplifies industrial-grade consistency. Every unit undergoes two-stage quality control: pre-grinding dimensional verification and post-coating hardness testing (≥1800 HV). Designed for B2B clients in construction equipment OEMs, infrastructure contractors, and industrial tool distributors seeking reliable, Made-in-China precision at scale.
45° point angle + reinforced web design ensures rapid penetration into dense masonry while minimizing wandering — ideal for pilot drilling before anchor installation or rebar placement.
Non-coated surface maintains natural tungsten carbide hardness (≥1800 HV) and thermal stability — no risk of coating delamination during high-friction masonry operations.
Leveraging 50 CNC lathes, 100 machining centers, and automated grinding lines — enabling batch consistency, scalable MOQs, and agile response to regional distribution partners.
| Parameter | Value |
|---|---|
| Model | Electric 45-1.2 E1SERDI |
| Drill Type | Center Drill Bit |
| Application | Masonry Drilling (Concrete, Brick, Block) |
| Total Length | 33 mm |
| Point Angle | 45° |
| Shank Diameter | 1.2 mm |
| Material | ISO K10 Tungsten Carbide (WC-Co) |
| Finish | Plain (Uncoated) |
| Place of Origin | ZHUZHOU, Hunan China |
| Standards Compliant | ISO 8062, DIN 333, GB/T 6135.1 |
All WC-Co powder batches certified per ISO 5832-4; traceable lot numbers logged in ERP system prior to sintering.
100% post-grinding inspection using Mitutoyo CMM and Rockwell A-scale testers — tolerance: ±0.02mm, hardness ≥1800 HV.
Visual check for surface integrity, labeling compliance (EN 13894), and moisture-barrier packaging — all units sealed in vacuum-formed plastic shells.
We accept custom geometries (point angles, flute configurations), branding (laser etching, custom packaging), and material grades (K05–K20). Minimum order: 500 pcs per SKU.
Dedicated offices in Thailand, India, Mexico, and Russia; local inventory hubs for rapid fulfillment. FOB Shenzhen, EXW, or DAP terms available.
Free application engineering support: drilling parameter recommendations, failure analysis, and on-site tooling audits for qualified partners.
Yes — the Electric 45-1.2 E1SERDI is designed for use with both standard drills and rotary hammers (SDS-plus compatible shanks available upon request). Its rigid core and optimized flute geometry resist chipping under impact load.
Our Dongguan facility is ISO 9001:2015 certified. All tungsten carbide blanks are sourced from suppliers compliant with ISO 5832-4 and REACH Annex XVII. Product packaging meets EN 13894 for industrial tools.
Absolutely. Upon request, we provide full QC dossiers including CMM reports, hardness certificates, and microstructure analysis (per ASTM E112) for each production lot.
Yes — we deliver virtual and on-site technical workshops covering masonry tool selection, wear pattern diagnosis, and best practices for maximizing tool life. Materials provided in English, Spanish, Arabic, and Russian.
Partner with a vertically integrated manufacturer trusted by global construction equipment OEMs — backed by 16+ years of export experience, rigorous QC, and responsive technical support.
Contact Sales Team
