... non-oiled8)Standards: JIS G 3302-1998,ASTM A653M,GB/T 2518,EN10142,Q/CHG 3-2005,EN 10142,DIN 171629 ... construction for making roofing tile, steel profiles for wall partition, T-bar, studs, fireproof door, air conditioning duct and home appliance.Sincerely hope ...