Product Name :High quality galvanized black phosphate gypsum drywall screws for metal and wood
Material :Stainless/Carbon steel
Finish:Black, Polish
Measurement system:Metric
Head Style:Pan
Standard: DIN
Grade :4.8/8.8/10.9/12.9
Certifications
Main Products
Testing Laboratory
We have Magnetic Powder Detector, Material Testing Machine, Metallographic Microscope, such testing instruments, guarantee product high quality and beautiful appearance.The quality control is strictly performed from buying raw materials in warehouse to different machining procession and to final packing.
Production Process
First, we have our own High-precision Digital Machining center for mould making in special Mould Workshop, excellent mould make product beautiful appearance…