How to read metal and calculate
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General provisions
Definition of a brand of metal produced in accordance with the provisions of GOST 7566−94. This standard specifies the requirements for acceptance, labeling, packaging, transportation and storage of blooms, slabs, billets, including cast and forged, profiled, shaped, grooved, cold-rolled, wire, round steel with special surface (including polished), cold roll-formed sections, sheet, broadband rental and tape.
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The procedure for marking and rolling of steel products
Marking applied directly on metal, if it is not subject to the packaging and on the labels, if the steel is Packed in bundles, coils, rolls, bundles or skeins of the foot rolls.
Marking perform the shock way — marking (hand or machine), electroretinogram, labeling of water-resistant film, colored lacquer or indelible dye composition, dye.
For steel that is not subject to the packaging, marking applied at a distance of not more than 200 mm from the end of each rod, slabs (all kinds), strip, sheet or the sheet edges or at the end of a rod, billet, sheet or on the outer turn of the roll.
For metal products, which tied in bundles, hung two labels, in coils and coils — one. For metal products, which tied in bundles or in foot rolls, one label on one of the coils or of coils and one for tying the bundle or stack of rolls. Labels are firmly attached to the studs with hand, convenient for viewing, or placed in a special pocket. In the case of the hanging of the two last labels are attached to the straps of a pack or bundle. The material of the labels and their attachment must ensure their safety during transportation and unloading
When the packaging sheet and broadband rolled in bundles, the marking is applied on the upper sheet and strip each pack or on the label map (label), firmly attached to the studs of a pack.
Mechanized stamping of thick sheets and strips are allowed to affix on the side edge of the upper sheet and strip each bundle. On the leaves, and at the request of the consumer and on the other the place of marking applied by the marking must be outlined with paint, colored varnish or bitumen.
Marking of steel products, not subject to the packaging and metal products, linked to bundles of marking each product with a size (diameter, square side, thickness, profile number) 30 mm or more and sheet thickness of 4 mm or more, must contain:
— name and (or) the trademark of the manufacturer;
— grade of steel or its symbol indicating the decoding in a quality document;
— melting number or its designation indicating the decoding in a quality document;
— the batch number, if the melt is divided into parties;
— size (diameter, square side, thickness, length, width, profile number).
The marking on the label (the label map), the top sheet of a pack, the outer end of the roll must contain:
— name and (or) the trademark of the manufacturer;
— grade of steel or its symbol, indicating the decryption in the document about the quality, group, or strength class;
— melting number or its designation indicating the decoding in a quality document;
— the batch number, if the melt is divided on party size (diameter, square side, thickness, length, width, profile number);
— the net weight (actual) bundle, coil, roll or bundle of skeins and foot rolls. By agreement with the consumer mass is not point;
the sign"TM" indicates when the supply of steel products for delivery (theoretical) weight.
The marking must be clearly legible, durable and indelible. The numbers and letters of the marking shall have a height of 5−20 mm and a width of 3−12 mm. On the labels, the bars with cross-section size less than 60 mm, the tape width less than 50 mm the dimensions of the digits and letters of the marking shall have a height of 4 mm and a width of 2 mm When the marking paint is allowed the height of letters and numbers to increase to 100 mm and width up to 70 mm Depth of marking (marking) of metal is established by agreement between the manufacturer and the consumer.
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