C Lipped Channel 1.Standard:Q195,Q215,Q235 2.Thickness:1. ... ; Length: as requires 3.Surface finished:black or galvanized C Channel C steel ChannelProduct: C channel1.Standard:ASTM ,JIS ,DIN,EN2Material: Q195,Q215 ... detailed drawing of hole location ;we punch elliptic hole on C purline for installation convenience at building site.