Double wall steel tube -- large coil

Double wall steel tube -- large coil is made by copper plating on both sides of the steel strip and welding it by crimping 720 degrees.
1. The inner surface of the tube has high cleanliness, good strength and high elongation;
2. It has good reprocessability and good permeability resistance;
3, High anti-explosion pressure, after surface treatment and excellent anti-corrosion performance, can be provided according to the needs of users with any long pipe and straight pipe;
4. It is suitable for automobile brake tubing and power steering pipe.