Z-shaped steel is a common cold-formed thin-walled steel, the thickness is generally between 1.6-3.0mm, and the section height is mostly between 120-350mm. The processing material is hot rolled (painted), galvanized. The processing standard shall be implemented according to GB50018-2002.

C-shaped steel is automatically processed and formed by a C-shaped steel forming machine. The C-shaped steel forming machine can automatically complete the forming process of the C-shaped steel according to the given C-shaped steel size.

Regardless of whether the I-beam is ordinary or light, because the section size is relatively high and narrow, the moment of inertia of the two main axes of the section is quite different, so it can only be directly used for bending on its network plane.

Classification:
1. Equilateral angle steel, angle steel with equal length on both sides.
2. Unequal angle steel, angle steel with different lengths on both sides. According to the difference in thickness on both sides, unequal angle steel can be divided into unequal side and equal thickness angle steel and unequal side and unequal thickness angle steel.

Steel H-beam is an economical cross-section and high-efficiency profile with more optimized cross-sectional area distribution and more reasonable strength-to-weight ratio. Each part of the H-shaped steel is arranged at right angles, which has the advantages of strong bending resistance in all directions, simple construction, cost saving, and light structure weight.