1. Connection method of steel structure workshop : welding connection 2. Design common code of steel structure workshop are as following: "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 structure workshop: 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 recyclable steel