Ⅰ. Material grade
1.Carbon structural steel: Q235.
2.High-strength structural steel :Q345
3.Special purpose steel t
   
ⅡQuality standard
1.Certificate: ISO9001:2000
2.Code for design of steel structure: GB 50017-2003
3.Technical code of cold-formed thin-wall steel structure: GB50018-2002
4.Load code for the design of building structures. GB 50009-2006
5.Construction quality acceptance of steel: GB50205-2001
6.Code for design, construction and acceptance of high strength for steel  structure, JGJ82-2011
7.Technical specification for welding of steel structure building: JGJ 81-2002
8.Technical specification for steel Structures of tall buildings: (JGJ99-98)
   
Ⅲ. Structure Assembly
1.Steel Framework:
Component: H-Column, H-Beam & C/Z-Purlin
Connection of steel structure method: Welding, Bolted
2.Surface treatment: Painting, Galvanized
3.Roof &Wall: colored steel tiles or colored steel sandwich panel as per
  request
4.Doors: Rolling or Pushing, as request