Screws: A tool that uses the physical and mathematical principles of the inclined circular rotation of the object and the friction force to fasten the mechanical parts of the object step by step. Self Drilling Screws products are widely used in ports, electricity, steel, shipbuilding, petrochemical, mining, railway, building, metallurgy, chemical industry, automobile manufacturing, plastics machinery, industrial control, highway, bulk transportation, pipe linings, tunnel, shaft protective slope, salvage, Marine engineering, airport construction, Bridges, aviation, spaceflight, venues and other important industries and infrastructure Process of mechanical equipment.
1. Overall smoothness: the product is smooth without burr, fine workmanship, fastening and durable; 2. Deep and complete thread: deep thread, neat and clear thread, uniform stress and not easy to slide; 3. Install quickly and save time; 4. Not easy to rust: moisture-proof, anti-oxidation, acid, alkali and corrosion resistance; 5.304 stainless steel: select high-quality 304 stainless steel, with hardness 2 times higher than that of copper and 10 times higher than that of aluminum; 6. No pollution: healthy, lead-free, environment-friendly, non-toxic and pollution-free.

We're known as one of the most professional screws manufacturers and suppliers since 1998. If you're going to wholesale custom made screws with competitive price, welcome to get more information from our factory.