modern steel structure building prefabricated

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.  

Surface Treatment

Hot dip galvanize

Ø Standard: JIS, DIN, ASTM B695-2000 Ø Hot dip galvanizing hole cutting good looking on surface of Ø Galvanizing process:

Steel structural components →Degreasing →Rinsing→ Pickling →Rinsing →      Fluxing → Galvanizing →Quenching → (Passivation) → Inspecting →Finished Product

Paint

1.Primer paint one coat 20-30 um

2.Middle paint two coat 40-60 um

3.Finish paint one coat 20-30 um Paint type: 1,red primer  2,zinc primer  3,Alkyd primer

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