Since most Tubtara® applications are still in steel, corrosion resistance is often linked to surface treatment. Dejond's high-quality standard finish is called Zinktop 480 h, an electrolytic, Cr6+- and Ni-free plating that guarantees 480 h resistance against red rust. This strong corrosion protection offers very good internal thread plating which is critical for small diameters and closed-end parts. Other specific coatings can provide additional features such as friction reduction, visual identification, sealing or vibration resistance to the Tubtara®. Be sure to consult our coatings page.