1.The steel structure of the connection method:

    welding connection or bolt connction

2.Steel structure design common norms are as follows:

• "Steel Design Code" (GB*********3)
• "Cold-formed steel structure technical specifications" (GB*********2)
• "Construction Quality Acceptance of Steel" (GB*********1)
• "Technical Specification for welded steel structure" (JGJ******2, J*******2)
• "Technical Specification for Steel Structures of Tall Buildings" (JGJ****8)

3.The characteristics of steel

• Light weight steel structure
• Higher reliability of steel work
• Steel anti-vibration (earthquake), impact and good
• Steel structure for a higher degree of industrialization
• Steel can be assembled quickly and accurately
• Large steel interior space
• Likely to cause sealing structure
• Steel corrosive
• Poor fire-resistant steel
• Recyclable steel
• Steel shorter duration

4.Commonly used steel grades and performance of steel

• Carbon structural steel: Q**5, Q**5, Q**5, Q**5, Q**5,Q**5 etc.
• High-strength low-alloy structural steel
• Quality carbon structural steel and alloy structural steel
• Special purpose steel