1.the connection method of steel structure:



welding connection or bolt connection



2.Steel structure design common norms are as follows:

"Steel Design Code" (GB50017-2003)
"Cold-formed steel structure technical specifications" (GB50018-2002)
"Construction Quality Acceptance of Steel" (GB50205-2001)
"Technical Specification for welded steel structure" (JGJ81-2002, J218-2002)
"Technical Specification for Steel Structures of Tall Buildings" (JGJ99-98)
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: Q195, Q215, Q235, Q255, Q275, Q345,etc.
High-strength low-alloy structural steel
Quality carbon structural steel and alloy structural steel
Special purpose steel
5.Market:Products have been all over the country more than 20 provinces, municipalities and autonomous regions, and have been exported to Europe, North America, the Middle East, Africa, Asia and other countries and regions, the widespread use
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