Products

Black zinc-plated hexagonal drill tail wire

Through the black passivation liquid treatment containing silver salt (c2D), a 10-15μm coating is formed, and the salt spray test is more than 96 hours. Environmentally friendly black zinc plating uses trivalent chromium passivation, does not contain hexavalent chromium, and complies with RoHS standards.

Colored galvanized hexagonal drill tail wire

Rainbow chromate passivation (c2C) on the basis of electrogalvanizing, coating thickness 8-15μm, salt spray test for more than 72 hours. When using trivalent chromium passivation process, it complies with RoHS environmental protection directive, and the hexavalent chromium content is ≤1000ppm.

Electro-galvanized hexagonal drill thread

Made of 1022A carbon steel, the surface hardness reaches HV560-750 after heat treatment, and the core hardness reaches HV240-450. The surface is electro-galvanized to form a 5-12μm coating, which meets the GB/T 13912-2002 standard, and the salt spray test reaches 24-48 hours without white rust.

Hexagonal drill thread

Our company mainly produces and sells various power bolts, hoops, photovoltaic accessories, steel structure embedded parts, etc.