① according to the rolling method, it is divided into hot-rolled bar steel and cold-drawn bar steel; ② according to the shape of the section, it is divided into round steel, flat steel, square steel, hexagonal steel, and octagonal steel
according to the shape of the section, it is divided into the equal-sided angle, unequal angle, I-beam, channel, d-beam, and b-beam, etc.
①according to the rolling method, it is divided into hot-rolled steel strip and cold-rolled steel strip; ② according to the use of general steel strip, it is divided into electrical steel strip, packaging steel strip, etc.; ③ according to the surface condition of washed steel strip, it is divided into bright steel strip, galvanized steel strip, tin-plated steel strip, color coated steel strip, etc. ④ according to the degree of softness of the material, it is divided into extra soft steel strip, soft steel strip, semi-soft steel strip, low hard strip, hard steel strip, etc.
① according to the rolling method, it is divided into hot-rolled steel plate and cold-rolled steel plate; ② thick steel plate (thickness > 3mm) and thin steel plate (thickness ≤ 3mm, except for electrical steel plate); ③ general steel plate, boiler steel plate, shipbuilding steel plate, automotive steel plate, daily use enamel steel plate and other special steel plate, etc.; ④ According to the surface condition, it is divided into galvanized thin steel plate, tin-plated thin steel plate, color coated steel plate and pickled thin steel plate, etc.
Note: The thickness of the old standard ≤ 4mm as a thin steel plate
① according to the method of rolling, it is divided into seamless steel pipe and welded steel pipe; ② according to the use of general steel pipe, it is divided into water and gas pipe, boiler steel pipe, oil pipe and other special steel pipe; ③ according to the surface condition, it is divided into galvanized steel pipe and not galvanized steel pipe; ④ according to the end structure of the pipe, it is divided into steel pipe with threaded and steel pipe without threaded
① according to the processing method, it is divided into cold-drawn steel wire and cold-rolled steel wire; ② according to the use of general-purpose steel wire, it is divided into cotton baling steel wire, overhead communication steel wire, welding steel wire, spring steel wire and other special steel wire; ③ according to the surface condition, it is divided into black steel wire, pickled steel wire, polished steel wire, polished steel wire, galvanized steel wire and other metal wire plating
wire rope is divided into round wire rope, braided wire rope and flat wire rope, which can be further classified according to the following methods: ① according to the structure, it is divided into single twist (strand) wire rope, double twist (multi-strand) wire rope and three twist strand wire rope; ② according to the surface state, it is divided into glossy wire rope, galvanized wire rope, plastic coated wire rope; ③ according to the cross-sectional shape of the strand divided into round wire rope and shaped wire rope; ④ according to the twist system characteristics point contact wire rope, wire contact rope and surface contact wire rope; ⑤ according to the twisting method, it is divided into right interactive twist, left interactive twist, right with the twist and left with the twist; ⑥ according to the rope core, it is divided into fiber core and steel core; ⑦ according to the use of points
Others: railway steel, hot-rolled window frame steel, etc.
Non-ferrous metals commonly used in industry
copper (commonly known as pure copper, purple copper), nickel, aluminum, magnesium, titanium, zinc, lead, tin, chromium, vanadium, tungsten, etc.
including copper alloys, aluminum alloys, nickel alloys, zinc alloys, lead alloys, magnesium alloys, titanium alloys, bearing alloys printing alloys, hard alloys
For pressure processing and casting, including common metal (copper-zinc alloy), and special brass (brass containing other alloy elements): aluminum brass, lead brass, tin brass, silicon brass, manganese brass, iron brass, nickel brass, etc.
For pressure processing and casting, including tin bronze (copper-tin alloy, generally also contains phosphorus or zinc, lead and other alloying elements), special bronze (copper and other alloying elements in addition to zinc, tin, nickel alloy): aluminum bronze, silicon bronze, manganese bronze, beryllium bronze, zirconium bronze, chromium bronze, cadmium bronze, magnesium bronze, etc.
For pressure processing, including ordinary white copper (copper-nickel alloy) special white copper (white copper containing other alloying elements): manganese white copper, iron white copper, zinc white copper, aluminum white copper, etc.
For pressure processing, including aluminum alloys that cannot be strengthened by heat treatment: rust-proof aluminum, and aluminum alloys that can be strengthened by heat treatment: hard aluminum, wrought aluminum, super hard aluminum, etc.
For casting, aluminum-silicon alloy, aluminum-copper alloy, aluminum-magnesium alloy, aluminum-zinc alloy, etc.
For pressure processing: nickel-copper alloy, nickel-silicon alloy, nickel-manganese alloy, nickel-chromium alloy, nickel-tungsten alloy, etc.
For pressure processing: zinc-copper alloy, zinc-aluminum alloy
For casting: zinc-aluminum alloy
For pressure processing: lead-antimony alloys, etc.
For pressure processing, magnesium-aluminum alloy, magnesium-manganese alloy, magnesium-zinc alloy, etc.
For casting, magnesium-aluminum alloy, magnesium-zinc alloy, magnesium rare earth alloy, etc.
For pressure processing: titanium alloyed with aluminum, molybdenum and other alloying elements
For casting: Titanium alloyed with aluminum, molybdenum and other alloying elements
lead-based bearing alloys, tin-based bearing alloys, copper-based bearing alloys, aluminum-based bearing alloys
lead-based printing alloys
tungsten cobalt cemented carbide, tungsten titanium cobalt cemented carbide, steel junction cemented carbide, cast tungsten carbide, etc.