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Leaf of steel from 12 to 35 mm of Art. 20 hot-smoked

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Hot-rolled sheet steel. GOST 19903-74

Steel sheets hot-rolled 500 mm wide and more, produced in sheets from 0,40 to 160 mm thick and rolls from 1,2 to 12 mm thick.

Sheet steel is subdivided: and

on rolling accuracy at a thickness up to 12 mm:

enhanced accuracy - And,

normal accuracy - B;

on planeness:

especially high planeness - ON,

high planeness - PV,

the improved planeness - PU,

normal planeness - MONDAY;

on character of an edge:

with not cut edge - BUT,

with a cut edge - About;

by the sizes:

Maximum deviations on width of a steel sheet with the cut edge delivered in rolls should not exceed:

+2 mm - with a width from 500 to 1000 mm;

+5 mm - with a width of St. 1000 up to 1600 mm;

+7 mm - with a width of St. 1600 mm.

with the cut edge delivered in sheets should not exceed:

+6 mm - with a width up to 800 mm;

+10 mm - with a width of St. 800 mm.

with not cut edge should not exceed +20 mm.

Maximum deviations longwise should not exceed the steel sheet rolled polistno:

+10 mm - with a length of sheets up to 1500 mm;

+15 mm - with a length of sheets of St. 1500 mm.

on continuous camps and cut on sheets, should not exceed:

+15 mm - with a length of sheets up to 1500 mm;

+10 mm - at the customer's request;

+20 mm - with a length of sheets over 1500 up to 3000 mm;

+25 mm - with a length of sheets over 3000 mm.

At the customer's request steel sheets produce with the following maximum deviations longwise:

+5 mm - with a length of sheets up to 1500 mm;

+6 mm - with a length of sheets St. 1500 to 2000 mm;

+10 mm - with a length of sheets St. 2000 to 3000 mm;

+20 mm - with a length of sheets of St. 3000 mm.

The rolling delivered in steel sheets with a cut edge should be cut off at right angle. The obliquity of the machine cut and crescent form should not remove steel sheets for the rated size.

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