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H shape steel purlin

H shape steel purlin

2020-05-22

Difference of H beams:

It is a kind of steel with better mechanical properties developed from h-shaped steel. It is named because its cross-section is the same as the English letter "H". H-shaped steel is divided into "wide flanged steel (HW), middle flanged H-shaped steel (HM), narrow flanged H-shaped steel (HN), thin-walled H-shaped steel (HN), thin-walled H-shaped steel (HT), H-shaped steel (HU)."


H-shaped steel is a new type of steel for construction. The cross-sectional shape is economical and reasonable, and the mechanical properties are good. During rolling, the points on the cross-section extend more uniformly and the internal stress is small. The advantages of steel can reduce the building structure by 30-40%. And because the legs are parallel to the inside and outside, and the legs are at right angles, they are assembled into a component, which can reduce the workload of welding and riveting by 25%. Commonly used in large buildings such as brackets, foundation piles, etc.


The advantages of H-shaped steel:

  1. The flange is wide, the lateral rigidity is large, and the bending resistance is strong.
  2. The two surfaces of the flange are parallel to each other, making connection, processing and installation easy.
  3. Compared with welded steel, the cost is low, the precision is high, and the residual stress is small. There is no need for expensive welding materials and weld seam detection, which saves about 30% of the steel structure manufacturing cost.
  4. Under the same cross-sectional load, the weight of the hot-rolled H-shaped steel structure is 15% -20% lighter than that of the traditional steel structure.
  5. Compared with the concrete (tong) structure, the hot-rolled H-shaped steel structure can increase the area of use by 6%, while the structural weight is reduced by 20% to 30%, reducing the structural design internal force.
  6. H-shaped steel can be processed into T-shaped steel, and honeycomb beams can be combined to form various cross-sectional forms, which greatly meets the needs of engineering design and production.


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