Bi-Metal Self-Drilling Screw for Drill Point No.8
Using 300 series Austenitic stainless steel and middle carbon steel
Why to use above 2 materials?
- 300 series Austenitic stainless steel：Corrosion Resistance、Good at Anti Rust、Non-Magnetic.
Middle carbon Steel：Partial Heat treatment which full hardening、to penetrate steel plate and to be lead thread.
To penetrate 18mm steel plate.
Production range 75-390mm.
Using on Architecture (ex. corrugated plate、sandwich panel ect……)
- Ruspert coating：resistance to salt water (salt spray test 500-1500hrs)、
weather changes & Kesternich test for 10-15 cycles.
- Zinc plated