Steel weight calculation method

A, steel length size
Steel length size is the most basic size of various steel products, it is to point to the steel length, width and height, diameter, radius, diameter, outside diameter and wall thickness length etc. The length of steel statutory measuring unit is meters (m), cm (cm), mm (mm). In the current habit, useful also inches (") said, but it is not legal unit of measurement.
1. The scope of the steel scale is to save material of a kind of effective measures. Range scale is the length or width is not less than a long by size, or length, long by how much to the wide from how much the size range delivery. Production unit can click here for size production supply.
2. Uncertain feet (usually the length) every product size (length or width), in standard range, and does not require the size of uncertain feet is fixed. Indefinite length and that usually ruler length (the feet). According to condemn feet delivery metal materials, as long as stipulated in length delivery can. For example, no more than 25 mm of ordinary round steel, it usually length for four to 10 m provisions, the length is in the range of round steel can be delivery.
3. Scale on request cut into fixed size called scale. According to the scale length delivery, delivered by the metal materials must be with the specified in the order contracts. Length. For example, specified on the contract according to the scale length 5 m delivery, the delivery of materials must be 5 m long, short in 5 m or longer than 5 m are not qualified. But in fact delivery can't all is 5 m long, thus provides the is allowed to have deviation, but are not allowed to have negative deviation.
4. Times feet on request of fixed size cut into the euploid number called times feet. According to The Times' length delivery, delivered by the length of the metal material for the buyer must be specified in the order contracts in length (called single times feet) integers multiples (plus JuKou). For example, the requirement in the contract order single times' length of 2 m, then, cut into double foot length for 4 m when namely, cut into three times for 6 m that feet, and separately with one or two JuKou quantity. JuKou quantity in standards regulations.
Times' delivery, were allowed only positive deviation, don't allow negative partial value.
5. Short feet shorter than the length of the standard uncertainty feet lower limit, but not less than the shortest length that allows short feet. For example, water, gas transportation steel pipe standards, allow each batch of 10% (in root count) 2-4 m long short feet tube. 4 m that is uncertain feet for the lower limit of length, allowed the shortest length is 2 m.
6. The narrow feet width of less than standard uncertain feet lower limit width, but not less than allow the narrowest of width that narrow feet.
According to the narrow feet delivery, must pay attention to the relevant standards of narrow feet proportion and the narrow feet.
Second, steel length size for example
1. The length of steel size
(1) the train tracks standard length is 12.5 m and 25 m two kinds.
(2) round steel, steel wire, wire size to diameter d mm (mm) several calibration.
(3) size to a distance of industry of mm (mm) several calibration.
(4) six Angle steel, eight Angle steel of the size to distance s mm (mm) several calibration.
(5) the size of the flat steel in width and thickness of the d b mm (mm) several calibration.
(6), channels to the size of the range waist high h, legs, and wide b and waist thick d mm (mm) several calibration.
(7) the size of the Angle steel, in equal equilateral margins b and edge of mm thick d (mm) several calibration. Not equal sides with the wide Angle size B, B and edge thick d mm (mm) several calibration.
(8) the size of the H steel webs with highly H, wing width b and webs t1, the thickness of the wing of the mm thickness t2 (mm) several calibration.
2. The length of the steel plate, with size
(1) general with steel plate thickness d mm (mm) several calibration. And with the steel strip steel in the width and thickness of the d b mm (mm) several calibration.
(2) leaflet shall steel plate sizes, such as hot rolling steel plates are: 1 mm thick plate, width is 600 x 2000 mm length; 650 x 2000 mm; 700 x 1420 mm; 750 x 1500 mm; 900 x 1800 mm; 1000 x 2000 mm, etc.
3. The length of steel pipe size
(1) general with steel tube diameter D, inside diameter and wall thickness S mm (mm) several calibration.
(2) each steel tube shall different sizes, such as seamless steel tube diameter of 50 mm, wall thickness 2.5-10 to 15 mm; Or the same wall thickness of 5 mm, 32-195 mm diameter of 29. And as nominal diameter of welded tube 25 mm thickness of 3.25 mm of common steel and 4 mm thick of steel pipe.
Three, steel weight
1. The theory of steel weight
According to the theory of steel weight is nominal size and the density of the steel (used to be called ratio) calculations of the weight called theoretical weight. This and the length of steel size, the section area and size deviation has a direct relation. Due to the steel products in production process of the allowable deviation, so use the formula to calculate the weight and the theory of the actual weight have certain in and out, so only as a reference when estimate.
2. The actual weight steel
Steel the actual weight is refers to the steel based on the actual weighing (weighing) income of weight, called the actual weight. The actual weight than theoretical weight accurate.
3. Steel weight calculation method
(1) the gross weight is "net weight" symmetrical, steel itself and packing materials is the total weight of total. Transportation enterprise computing freight time according to the gross weight calculation. But in purchasing steel is calculated according to the net weight.
(2) net weight is "gross" symmetrical. Steel gross minus the packing material weight of weight, namely the actual weight, called the net weight. In purchasing steel in general by net weight calculation.
(3) tare weight packing material of steel, called the tare weight.
(4) weight tons of steel gross weight calculation according to the use of the weight of the freight units. Its legal unit of measurement for tons (1000 kg), and the long tons (imperial weight 1016.16 kg), ton (us-made weight 907.18 kg).
(5) before weight also say "billing tons" or "freight ton". Transportation departments of the freight charges steel weight. Different mode of transportation, have different calculation standard and methods. Such as railway vehicle transportation, general with the use of van mark truck as before weight. Highway transportation is combined with the vehicle load tonnage freight charges. Railway, road network, the gross weight in kilograms by some at least before weight, low into the whole.
Four, steel weight computation theory
Steel weight computation theory of measurement for kg (kg). The basic formula is: W (weight, kg) = F (breaking area was the) x L (length, m) x ρ (density, g/cm3) x 1/1000, the density of the steel for: 7.85 g/cm3,