Classification of round steel
Round steel is divided into hot-rolled, forged and cold-drawn three kinds. The specification of hot rolled round steel is 5.5-250 millimeters. Among them: 5.5-25 millimeters of small round steel is mostly supplied in bundles of straight bars, commonly used for rebar, bolts and a variety of mechanical parts; greater than 25 millimeters of round steel, mainly used in the manufacture of mechanical parts, seamless steel pipe billets and so on.
Round steel materials
Round steel materials: Q195, Q235, 10#, 20#, 35#, 45#, Q215, Q235, Q345, 12Cr1Mov, 15CrMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo, 42CrMo, 40CrNiMo, GCr15, 65Mn, 50Mn, 50Cr, 3Cr2W8V, 20CrMnTi, 5CrMnMo and so on.
Circular steel specifications
30crmo round steel specifications are how much
1. chromium molybdenum alloy steel, this steel is a kind of China's alloy steel, 30 is the carbon content. It is used to manufacture 10.9S8.8S high-strength bolts. But before use must be tested to confirm the content of its composition, can be used with confidence. China's grade 30CrMO equivalent to Japan's SCM430
2. This steel has high strength and toughness, high hardenability, in oil critical quenching diameter of 15 ~ 70mm; steel thermal strength is also good, below 500 ℃ with sufficient high-temperature strength, but 550 ℃ when its strength declined significantly; when the alloying elements of the lower limit of the weld is quite good, but close to the upper limit of weldability Medium, and the need to preheat to more than 175 ℃ before welding; steel machinability is good, cold deformation of the plasticity of the medium; heat treatment in the range of 300 ~ 350 ℃ has the first type of tempering brittleness; there is a tendency to form a white point.
Round steel symbol
Round steel is 1 grade steel, the symbol is Φ, 2 grade, 3 grade steel are threaded, 2 grade is 1 grade steel that symbol below and then add a cross, 3 grade is 1 grade steel that symbol for the two vertical, below and then add a cross
Round steel price
Round steel prices in general there is no standardized, the price is generally in the 3000 yuan / ton - 9000 yuan / ton varies, different materials, different specifications, different uses and even different production companies round steel price will be different; for example, in 2006, the same 2Cr13φ12-75 round steel, Xining unit price is about 8500 yuan / ton, Dongte's unit price is 8700 yuan / ton. However, the factors affecting the price of round steel are diverse, not only the regional factors. Round steel manufacturers
09mnd round steel manufacturers are Shanghai Shige Metal Materials Co, Ltd, Shanghai Lirong Industry and Trade Co, Ltd, Shanghai Chenzhong Industry and Trade Co, Ltd are good manufacturers, their 09mnd round steel material is good quality and fair price, very good manufacturers.
Calculation formula for the weight of round steel
Calculation formula for the weight of round steel: W = 0.006165 * D * D (D = diameter in mm)
Calculation formula for the weight of round steel and steel pipe
Round steel (kg / m) W = 0.00617 * Diameter * Diameter (kg / m) round steel pipe (kg / m) W = 0.02466 * wall thickness * (OD - wall thickness). (OD - wall thickness) rectangular steel pipe (kg/m) W = 0.0157 * wall thickness * (section length + section width - 2.8584 * wall thickness) round steel weight formula - round steel weight (kg) = 0.00617 * diameter * diameter * length of square steel weight (kg) = 0.00785 * side width * side width * length First set a good density of 7.85KG / cubic decimeter, generally already know the diameter D decimeter and length L decimeter, now deduce the formula: round steel weight = density * surface area * length = 7.85KG /...
How to calculate the weight of 45 steel?
Circular steel diameter is 250MM length is 50MM.
Calculation: 3.14159Xradius X radius X length X7.9, where 7.9 is the density of steel volume multiplied by the density of which the density of the 45 steel need to be calculated 12.5*12.5*3.14*5*7.8=19.134kg
Calculation of the weight of 45 steel
Calculation formula: diameter * diameter * 0.01234 * length = weight 60 * 60 * 0.01234 * 10 = 444.24 pounds of 45 steel density 7.85 kg per cubic meter you calculate the weight is the volume * density or check the mechanical design manual inside the theoretical weight of round steel, diameter of 60mm round steel is 22.2 kg per meter, which is..... .3.14*(60/2)*(60/2)*10*1000*7.8=Weight
Stainless steel round steel:
Stainless steel round steel belongs to the category of long material, and belongs to the category of bar, the so-called stainless steel round steel is a long material with uniformly round cross-section, generally about four meters long. It can be divided into bare round and black bar. The so-called light round, refers to the smooth surface, after quasi-roll treatment. And the so-called black bar, refers to the surface of the black coarse, direct hot-rolled. Common materials are 301, 304, 303, 316, 316L, 304L, 321, 2520, 201, 202 and so on. Specifications expressed in diameter, such as "50" that is, the diameter of 50 millimeters of round steel.
Stainless steel round steel application prospects, is widely used in hardware kitchenware, shipbuilding, petrochemicals, machinery, medicine, food, electricity, energy, aerospace, etc., building decoration. Seawater with equipment, chemical, dyes, paper, oxalic acid, fertilizer and other production equipment; photographic, food industry, coastal facilities, ropes, CD rods, bolts, nuts.
Hot-dip galvanized round steel:
Galvanized round steel production process: hot-dip galvanized round steel into the hot-dip galvanizing line, first of all, after the selection of flat and no defects in the square tube into the pickling workshop, with sulfuric acid or hydrochloric acid soaking to remove hot-dip galvanized round steel surface of the iron oxide and floating rust. After 2 times pickling, pickling time according to the hot-dip galvanized round steel raw materials, roughly in 50-80 minutes, until the round steel surface rust and oxide thoroughly pickled off, immediately immersed in water tank soaking waiting for galvanized, so as to prevent the hot-dip galvanized round steel re-oxidation. After the second water cleaning, and then transported on the drying bed drying, and then hot dip galvanized round steel immersed in about 460 ℃ zinc pool for hot dip galvanizing operations, and finally according to the customer's different requirements of the hot dip galvanized round steel drying and cooling oil or passivation treatment.
The difference between round steel and other steel bars
1. The appearance is not the same, round steel appearance round, no grain without ribs, other steel bar surface appearance of engraved lines or ribs, which results in the round steel and concrete bond is small, while the other steel bars and concrete bond is large.
2. Composition is not the same, round steel (a steel) belongs to the ordinary low carbon steel, other steel bars are alloy steel.
3. Strength is not the same, round steel strength is low, other steel strength is high, that is, the same diameter size of round steel and other steel bars compared to the round steel can withstand the tension than other steel bars, but the round steel plasticity is stronger than the other bars, that is, the round steel in the pull before a large deformation, and other steel bars in the pull before the deformation is much smaller.