color steel coil standard:ASTM JIS GB steel grade: SPCC SPGC SPCD SPHC SGCC DX51D+ ... Z T:0.2-2.0mm W:500-1250mm color steel coilPrepainted steel:standard: AISI ASTM JIS GBsteel grade: SPCC ... ; 5-7 micron on the back side.color: as per RAL no. or as per your ... color sample. white, red, sea blue,gray,yellow,black, ... am looking forward to our first cooperation ! color steel coil