... 1M=2000mm)3Wall Height2870mm/3000mm4Floor beamC style steel, Q235, painted structure5ColumnDouble C style steel, Q235, painted structure6Roof beamDouble ... slope truss, sealed by the C type steel7 Roof purlinC style steel ... 0.45KN/M220Fire proofB2 grade21Resistant temperature-20ºC to 50ºC19The resistant earthquake gradeGrade 7 ...