Chromium increases the hardenability and wear resistance of spiral steel pipes, as well as improves their corrosion resistance and oxidation resistance. To enhance the corrosion resistance of anti-corrosion spiral steel pipes (black pipes), galvanization is performed.

Manganese enhances the strength of spiral steel pipes, mitigates the adverse effects of sulfur, and improves their hardenability. High-alloy spiral steel pipes with high manganese content (high-manganese spiral steel pipes) exhibit excellent wear resistance and other physical properties.

Phosphorus significantly reduces the plasticity and toughness of spiral steel pipes, especially at low temperatures. This phenomenon is known as cold shortness. In high-quality spiral steel pipes, sulfur and phosphorus content must be strictly controlled. However, from another perspective, higher sulfur and phosphorus content in low-carbon spiral steel pipes can facilitate easy chipping, which is beneficial for improving the machinability of spiral steel pipes.