Q235 Q345 flat galvanized steel complete specifications and reasonable price! Integrity management, reasonable price. Xinlong steel inquire 0512-65086995 13382509806 15950991968 complete specifications: 3 * 30 * 40 * 6,2 * 6,2 * 6,2 * 20 * 30 * 25 * 6,2 * 6,8 * 100 * 6,10 * 100 * 80 * 6,8 * 6,7 * 6,6 * 80 * 80 * 70 * 6,7 * 6,6 * 6,6 * 70 * 70 * 60 * 6,5 * 6,5 * 60 * 6,5 * 6,4 * 50 * 40 * 50 * 6,4 * 6,3 * 6,3 * 50 * 40 * 6 kinds of product specifications basic concepts types of specifications ferrous metals, steel and non-ferrous metals in the introduction of steel Briefly explain the basic concepts of ferrous metals, steel and non-ferrous metals in the previous classification. 1, black metal refers to iron and iron alloys. Such as steel, pig iron, ferroalloy, iron and so on. Steel and cast iron are based on carbon as the main element of the alloy, known collectively as the iron-carbon alloys. ① refers to the iron ore into pig iron blast furnace smelting products, mainly used to manufacture steel and castings. ② the cast iron smelting in the cupola, to obtain cast iron (liquid), the liquid cast iron into the casting, this iron called iron castings. ③ alloy is an alloy of iron and silicon, manganese, chromium, titanium and other elements, the alloy is one of the steelmaking raw material, make steel in steelmaking deoxidizer and alloying elements used additives. 2, the steel-making pig iron into steel smelting furnace by a certain process, to obtain steel. Steel products are steel ingot, billet and direct cast various steel castings. Often speak of steel, generally refers to a variety of steel rolled steel. Steel is black metal but not exactly black steel metal. 3, non-ferrous metals, also known as non-ferrous metal, black metal outer finger except metals and alloys, such as copper, tin, lead, zinc, aluminum and brass, bronze, aluminum and bearing alloys. Also in the industry also uses chromium, nickel, manganese, molybdenum, cobalt, vanadium, tungsten, titanium, alloys of these metals is mainly used as additions to improve the properties of the metal, wherein the tungsten, titanium, molybdenum, and other tools used for the production carbide. These are called non-ferrous industrial metals, in addition to precious metals: platinum, gold, silver and precious metals, including radioactive uranium, radium. Steel classification of steel carbon content between 0.04% -2.3% of the iron-carbon alloys. In order to ensure its toughness and ductility, the carbon content of not more than 1.7%. The main elements of steel in addition to iron, carbon, and silicon, manganese, sulfur and phosphorus. Classification steel variety, its seven main methods are as follows: 1, according to the quality classification of carbon steel: low carbon steel (C≤0.25%); medium carbon steel (C≤0.25-0.60%); high-carbon steel (C≥0.60%). 3, according to the molding method Category: Hot-rolled steel cold-drawn steel. 4, classified according to the microstructure normalizing state: pearlite steel; bainitic steel; martensitic steels; austenitic steels. 5. By Application ordinary carbon steel; low-alloy structural steel; reinforced steel. Spring steel bearing steel tool steel: carbon tool steel; alloy tool steel; high speed tool steel. Boiler steel, pressure vessel steel, steel and other farm machinery. 6, a comprehensive classification alloy structural steel; spring steel; free cutting steel; bearing steel; high-quality structural steel for a particular purpose. 7. The method of classification of boiling steel smelting; semi-killed steel; killed steel; special killed steel.