... (2)Grade: HDG,PG,Powder Coated (3)Shape: C Channel Quick Details Standard: ASTM, GB, JISDimensions: 41*41mm ... of Origin: Tianjin China (Mainland)Brand Name: ZTShape: C ChannelApplication: Structural RoofingPerforated Or Not: Is PerforatedPackaging & ... the deposit or the copy of L/C.SpecificationsSteel channel 1.Size:41*41mm and 41*21mm ... 3.0mm 3.Length:3m,5.8m,6mSteel channel 1.Size:41*41mm and 41*21mm ...