Screw head is made by material 20MnB4, galvaizing surface treatment. The bar is made by dia 4mm ripped reinforcing rod. Both parts weld together through friction welding process. This welding process is different from TIG, MIG. No welding lines could be found in visual. Surface is clean.

Raw Material:
Carbon Steel; Alloy Steel; Stainless Steel; Aluminium Alloy; Brass; Bronze
Service:
Machining of Steel Blanks; Machining of Castings; Machining of Forgings; Machining of Stamping
Heat treatment:
Normalizing; Tempering, Q+T; Quenching; Carburizing; Nitriding
Machining Equipment:
6 sets of 4-axis machining centre (Max SPEC:1300mm * Dia750mm);
6 sets of Oblique Guide CNC (Max SPEC:Dia500mm);
2 sets of Automatic mechanical arm production line (SPEC:Dia20mm-800mm);
13 sets of Normal CNC lathes (SPEC: Dia20mm-800mm);
Machining Tolerance:
±0.01 To ±0.005mm
Quality Certification:
ISO9001; TS16949
Delivery Time for Samples:
7-10days for samples making
Testing Equipment:
Spectrograph; Mechanical Test Equipment; Hardness Tester;
Roughness Tester; Dimension Checking Tools; M.T; U.T; CMM
Surface Treatment:
Power Coating; E-Coating; Plating Zn / Cr / Ni; Blackening; Dacromet; Hot Galvanizing; Anodizing