light weight, wall thin section, high strength, excellent performance Packing: Export PackingStandard: enterprise standardHS Code ... Treatment: Galvanized Application: Structural Steel BarType: Carbon Steel BarShape: C ChannelExport Markets: North America, South America, Eastern Europe, ... coming and visiting . TRACY SUN TEL : +86-15966396819 C type purlin ,color as per your choose ,type 100-40-20