... .Depth:15-100mm 4.Lip Width:10-20mm C Steel Beam/c purlin/Steel C Purlin: StandardAISI, ASTM, BS, DIN, GB, JIS, ... .All products we exported are in the line with ISO9001 International Quality Control System stardards .Our company has been in this ... companies in the world. Company NameShijiazhuang aolian colorful steel sheet Co.,Ltd Address Hi-tech Development Zone , speace road , shijiazhuang city , ...