We produce them by applying the technology of the cold rollling procedure (cold state rolling) on the two-high rolling mills, and running them through 1 – 7 times until the preset sheet thickness is reached.

The system is cooled and oiled with rolling oils (a compound of a petroleum derivative and special additives).

The replacement of the smooth rolls with preset pattern engraved rolls results in ribbed sheets instead of smooth cold rolled ones..

After the cold rolling procedure, the sheets are processed with one of the adjustment operations, such as tempering, edging, cutting-up, degreasing, stretching, embossing, colouring, profiling and cutting of sheet metal. A choice of the operation/operations depends on the delivery requirements.

NON-COLOURED

CHARACTERISTICS	THICKNESS (mm)	WIDTH (mm)	INNER DIAMETER (mm)
Cold rolled, mill finish, unedged, undegreased, unstretched	6,0-3,0	900-1600	600
Cold rolled, mill finish, edged, undegreased, unstretched	3,0-1,5	300-1500	500, 600
Cold rolled, mill finish, edged, (degreased, stretched from 1,5-0,4) no sleeve	2,0-0,35	20-600	400, 500
Cold rolled, mill finish, edged, degreased, stretched from 1,5-0,4	1,5-0,35	300-1500	500, 600
Cold rolled, mill finish, edged, degreased, stretched up to 0,8, cardboard sleeve	0,8-0,35	75-1500	300, 400, 500, 600

COLOURED

CHARACTERISTICS	THICKNESS (mm)	WIDTH (mm)	INNER DIAMETER (mm)
Cold rolled, edged, stretched, colour shade card RAL	1,5-1,2	800-1000	500, 600
Cold rolled, edged, stretched, colour shade card RAL	1,2-1,0	800-1250	500, 600
Al (1050) cold rolled, edged, stretched, colour shade card RAL	1,0-0,55	800-1500	500, 600
Al legure, cold rolled, edged, stretched, colour shade card RAL	1,0-0,35	800-1500	500, 600
cold rolled, edged, stretched, colour shade card RAL, no sleeve	1,2-0,35	20-600	400, 500
cold rolled, edged, stretched, colour shade card RAL, with and without cardboard sleeve	1,2-0,55	300-1250	500, 600
Al legure, cold rolled, edged, stretched, colour shade card RAL, cardboard sleeve	0,8-0,55	75-1500	300, 400, 500, 600
Al (1050), cold rolled, edged, stretched, colour shade card RAL, cardboard sleeve	0,8-0,55	75-1500	300, 400, 500, 600

EMBOSSED

CHARACTERISTICS	THICKNESS (mm)	WIDTH (mm)	INNER DIAMETER (mm)
Cold rolled, edged, stretched, coloured, non-coloured, STUCCO D2010	1,2-0,35	300-1500	500, 600
Cold rolled, edged, stretched, coloured, non-coloured, STUCCO D2010, cardboard sleeve	0,8-0,35	75-1500	300, 400, 500, 600
Al (1050), cold rolled, edged, stretched, coloured, non-coloured, STUCCO D2010	1,5-1,2	300-1000	500, 600

RIBBED

CHARACTERISTICS	THICKNESS (mm)	WIDTH (mm)	INNER DIAMETER (mm)
Cold rolled, unedged, relief two-high and five-high	1,5/2,0 – 5,0/6,5	1000-1530	600

COLOUR SHADE CARD: RAL

All indicated coil thickness data refer to alloys, material states and Di/Du diameters and are determined at a specific request of the customer.

PROTECTIVE PVC FOIL: standard, for lasar ray cutting (at request of the customer)

DELIVERY: no sleeve, on cardboard sleeve

The cold rolled sheets can be produced of the alloys, series 1xxx, 3xxx, 5xxx and 8xxx after the Charti Alloys coding according to the standards. The quality is determined on the bases of the client’s request and in accordance with the Chart Material quality states.