The product is made of imported SUM23 round bar material with automatic lathe turning. The surface roughness is Ra3.2.
The surface is black zinc plating, the film thickness is 8~12 m, salt spray up to 144H without red embroidery.
Black zinc plating is a metal anti - oxidation processing, suitable for hardware products, such as machine, stamping, die - casting process products.
After passivation treatment, the rainbow color of galvanized layer can greatly improve its corrosion resistance.
Dongguan Tiansheng Industrial Co., Ltd. specializes in r&d and production of non-standard fastening customized for 12 years.
You are welcome to customize the drawings or samples.
