the size and weight of the steel |
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one steel length size
Steel length dimension is the most basic dimensions of various steel refers to steel long, the length of the width, height, diameter, radius, diameter, diameter and wall thickness. Steel length of the legal unit of measurement is meters (m), centimeters (cm), millimeters (mm). Existing habits, "("), but it is not legal units of measurement.
The scope of the steel is cut to length. Is an effective measure to save the material. The range length is the length or long by the width is not less than a certain size, or length. Long by wide from within the size range of the number of how many delivery. Production units this size requirements for production supplier.
(2) length (usually length). Where the product dimensions (length or width), the standard within the provisions of, and do not require fixed size called not length. Not length length is usually also called the length of the ruler. Metallic materials by length delivery, as long as delivery can be within the specified length range. For example, not more than the ordinary round steel 25mm, its usually the length of the provisions of 4-10m, then the length of the bar in this range are to be delivered.
(3) Length. Cut by the requirements of orders known as the length of a fixed size. According to the delivery of definite length, the cross-metallic materials must have a demand-side length specified in the contract. For example, the contract specify definite length 5m delivery, the delivery of materials must all be 5m long, shorter than 5m or longer than 5m are unqualified. But can not actually delivery are 5m long, and hence allow for a positive deviation, while not allowed to have a negative deviation.
(4) times the foot. Cut to order request a fixed size integer multiples are called double length. By the time of delivery of the double length, cross-metallic materials must be specified in the contract for demand-side length (called Single ft) integral multiples (plus Jukou) in length. For example, the demand-side requirements in the contract that a single double length is 2m, cut into double-foot length is 4m, cut into 3 double length is 6m, respectively, plus one or two saw cut the amount of . Saw cut the amount specified in the standard. Double length delivery, allowing only positive deviation, does not allow negative bias.
5 a short feet. Length is less than the lower limit of the standard requirements of the definite length, but not less than the shortest allowable length is called a short foot. For example, water, gas transmission steel pipe standard stipulates that allows each batch of 10% (according to the number of roots) 2-4M short foot steel pipe. 4m is the lower limit of length length, the shortest allowable length of 2m.
6. Narrow feet. Width less than the standard requirements of the length the width of the lower limit, but not less than the narrowest width allowed is called a narrow foot. Delivery in a narrow foot, you must pay attention to the relevant standards prescribed ratio of narrow feet and the narrowest foot.
, steel and length dimensions for example
(1) the length of the beam size
(1) train tracks, the standard length of 12.5m and 25m.
⑵ round bar, wire rod, wire size to the diameter d, mm (mm) the number of calibration.
⑶ square steel size of the side length of a millimeter (mm) the number of calibration.
The ⑷ Hexahedrons, octagonal steel size-to-edge distance s, mm (mm) the number of calibration.
⑸ the size of the flat steel width b and thickness d millimeters (mm) the number of calibration.
⑹ beam, the channel size to waist high h, the width b of the legs and waist thickness d mm (mm) the number of calibration.
⑺ equilateral angle size of the same edge width b and the edge thickness d in millimeters (mm) the number of calibration. Unequal angle size of the edge width B, b and the edge thickness d millimeters (mm) the number of calibration.
(8) H-beam size to the web height h, flange width b, and web thickness t1, the number of flap thickness t2, millimeter (mm) calibration.
(2) the length of the plate, strip, size
Calibration the ⑴ generally steel plate thickness (d) millimeter (mm) number. Strip while the strip width b and thickness d in millimeters (mm) the number of calibration.
(2) steel sheet leaflets of different sizes of the provisions, such as hot-rolled steel plate: 1mm thick steel, width 600 x length 2000 mm; 650 × 2000mm; 700 × 1420 mm; 750 × 1500 mm; 960 × ; 1800 mm; 1000 × 2000 mm.
(3) the length of the tubes size
⑴ general steel pipe diameter D, inner diameter and wall thickness S millimeters (mm) number of calibration.
⑵ each steel pipe provided in different sizes, such as seamless steel pipe outside diameter 50mm, wall thickness 2.5-10mm, 15 kinds; or the same wall thickness of 5mm, outer diameter 32-195mm 29 kinds. Another example is the welded steel pipe nominal caliber 25mm wall thickness of ordinary steel pipe 3.25mm and 4mm thicker steel pipe.
, steel weight
A steel theoretical weight
The theoretical weight of steel is the nominal size and density of steel (formerly called specific gravity) calculated weight is called the theoretical weight. This is the length of the steel size, cross-sectional area and size tolerances are directly related. Due to the tolerances of the steel in the manufacturing process, so the formula to calculate the theoretical weight and actual weight of a certain access, so only as a reference in the estimate.
2 the actual weight of steel
The actual weight of the steel is the weight of the steel from the actual weighing (weighing), known as the actual weight. The actual weight than the theoretical weight accurate.
3 steel weight calculation method
⑴ GW. "Net" symmetry, the combined total weight of the steel itself and the packaging materials. The calculation of freight transport enterprises according to gross weight. Steel buying and selling according to net weight.
⑵ NW. Is the symmetry of the "gross weight". Steel gross weight minus the weight after the weight of packaging materials, the actual weight, called the Net. Generally calculated according to net weight in steel buying and selling.
⑶ skin weight. The weight of steel packaging materials, called the tare weight.
⑷ weight tons. Unit of weight used in the steel gross weight of freight. The legal units of measurement tons (1000kg), there are long ton (imperial unit of weight 1016.16kg) short ton (U.S. unit of weight 907.18kg).
⑸ billing weight. Also known as "revenue tons" or "freight ton". Transport sector to receive a shipping weight of steel. Different modes of transport, there are different calculation standards and methods. Transport such as railway vehicle, generally marked load of lorries used as the chargeable weight. Road transport is the combination of vehicles dwt payment of freight. Rail, road, LTL, while gross weight several kilograms for a minimum chargeable weight less than into the whole. |
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