Now many buildings use steel structure. In fact, the head of steel structure has light steel and heavy steel.What are the differences between the two? 

　　1.Crane lifting weight: heavy steel structure ≥ 25 tons < light steel structure. 

　　2.Steel consumption per square meter: heavy steel structure ≥ 50kg / m2 < light steel structure. 

　　3.Component steel plate thickness: heavy steel structure ≥ 10mm < light steel structure. 

　　4.Special application fields: petrochemical plant facilities, power plant buildings, large-span stadiums, exhibition centers, high-rise or super high-rise steel structures must be heavy steel structures.Light roof, light external wall, light refers to enclosure, etc. general workshop is usually light steel structure.  

　　5.Previous data reference: the cost per square meter of heavy steel structure > light steel structure, the maximum component weight of heavy steel structure is much more obvious, the maximum span, structure form, eaves height are also important data comparison to distinguish light and heavy steel structure.