... 20mmWeight0.912-43.588kg/mSurface FinishedBlack or Galvanized light weight c steel purlin Feature and application : Steel c ... rolled coil by cold bending processing, thin wall, light weight, high strength, excellent section properties, compared with traditional ... in the world. Company NameShijiazhuang aolian colorful steel sheet Co.,Ltd Address Hi-tech Development Zone , speace road , shijiazhuang ...