Solutions
Lihao Technology, based in Changan, Dongguan, is a professional manufacturer of HSS-E cobalt countersinks. We provide professional countersink solutions for sheet metal, hinge manufacturing, aluminum doors & windows, automotive parts, electronics, medical devices, mold making and hardware furniture, plus solutions for common problems such as burrs, vibration marks, chipping, thin-sheet processing, aluminum welding, tool life, efficiency and chip evacuation. Factory direct, 10+ years of experience, serving 1000+ customers, custom manufacturing supported.
By Industry
Sheet Metal Processing
Countersinking on stainless / cold-rolled sheets, screw heads fully flush
Hinge Manufacturing
Small-diameter countersinking on thin sheets, smooth hinge assembly
Aluminum Doors & Windows
Processing on thermal-break aluminum profiles, no chip welding, smooth evacuation
Automotive Parts
High precision and consistency, angle tolerance ±0.1°
Electronics
0.8-1.5mm thin-sheet processing, clean finish, no sharp edges
Medical Devices
Precision processing on medical stainless / titanium, high cleanliness
Mold Making
High-hardness processing on mold steel / hardened steel HRC 50-60
Hardware Furniture
Mass production, long tool life, high efficiency, lower cost
⚠️ By Problem
Burrs on Chamfer
5 root causes analyzed, HSS-E + TiAlN coating solves burrs
Vibration Marks on Chamfer
4 root causes analyzed, high-rigidity thick shank solves vibration
Chipping
5 root causes analyzed, tough HSS-E steel solves chipping
Screw Heads Proud on Thin Sheet
3 key challenges analyzed, thin-sheet countersink seats screw heads fully
Aluminum Welding
3 root causes analyzed, TiAlN coating (friction 0.15) prevents welding
Short Tool Life
5 root causes analyzed, HSS-E + TiAlN coating gives 3x tool life
Low Machining Efficiency
4 root causes analyzed, efficient cutting design improves efficiency 40%
Poor Chip Evacuation
4 root causes analyzed, TiAlN coating + large chip pocket for smooth evacuation
Service Area & Contact
Factory direct
Response within 48 hours
Nationwide delivery
One-on-one technical guidance
Can't find the right solution?
Contact Lihao Technology engineers for one-on-one guidance, custom sizes in 7 days