Special Shape Steel Tube

Special shape steel tube is a special section shape size steel pipe made of hot rolled or cold rolled strip steel or coil plate after cold bent processing and formed by high frequency welding to meet special needs. It includes flat ellipse, semicircular, hexagonal, hexagonal, unequal hexagonal, equilateral triangle, pentagonal, octagonal, convex, double convex, double concave, multi-concave, melon seed, flat, diamond, star, parallelogram, ribbed, drop, inner fin, torsion, B, D and multi-layer tubes.