How can steel trade make a profit?

To put it simply, like most trade, it generally follows the hierarchical distribution model of first-level agent, second-level wholesale, third-level retail and finally end customers. At present, Dagang steel trade has gained considerable advantages in capital, supply and sales channels. They can basically avoid risks through steel futures and control most channels in the spot market. These are the chips they can negotiate with the manufacturers. Steel trading industry is an industry with large capital, high investment and low return. At present, the price is basically based on futures prices, and large traders order a certain product category in the factory by order-based contracts. A little basic information is attached below. Basic classification of steel

Wire rod: ordinary high-speed wire rod

Profile: I-beam, channel steel, angle steel, square steel, heavy rail, high-tech steel, H-beam, round steel, equilateral angle steel, flat steel, light rail gear steel, hexagonal heat-resistant steel bar, combined round steel, square tube, carbon steel bearing steel, carbon bonded round steel, stainless steel round steel bearing steel and rectangular tube spring steel.

Plate: medium and heavy container plate, carbon plate, boiler plate, low alloy plate, rhombic plate, cold plate, hot plate, cold rolled plate, hot rolled plate, galvanized sheet, galvanized rolled manganese plate, stainless steel plate, silicon steel plate, color coated plate, color steel corrugated iron galvanized rolled plate and hot rolled strip steel.

Tubing: welded pipe, stainless steel pipe, hot-dip galvanized pipe, cold-dip galvanized pipe, seamless pipe, spiral pipe, hot-rolled seamless 1, classified by quality.

(1) Ordinary steel (P≤0.045%, S≤0.050%)

(2) High quality steel (both P and S are ≤0.035%)

(3) High quality steel (P≤0.035%, S≤0.030%)

2. Classification by chemical composition

(1) carbon steel: a. low carbon steel (c ≤ 0.25%); B medium carbon steel (c ≤ 0.25 ~ 0.60%); C. high carbon steel (C≤0.60%).

(2) Alloy steel: A. Low alloy steel (total content of alloying elements ≤ 5%) B. Medium alloy steel (total content of alloying elements > 5 ~ 10%) C. High alloy steel (total content of alloying elements >10%).

3. Classification according to forming mode: (1) forged steel; (2) cast steel; (3) hot rolled steel; (4) cold-drawn steel bars.

4, according to the metallographic organization classification

(1) A. Sub-* * steel (ferrite+pearlite) b.*** steel (pearlite) C. Over-* * steel (pearlite+cementite) D. ledeburite steel (pearlite+cementite).

(2) normalizing: a. pearlite steel; B. bainite steel; C. martensitic steel; Austenite steel.

(3) No phase change or partial phase change.

5. Classification by purpose

(1) steel for building and engineering: a. ordinary carbon structural steel; B. low alloy structural steel; C. steel bars.

(2) Structural steel A. Steel for machinery manufacturing: (a) quenched and tempered structural steel; (b) Case-hardened structural steel: including carburized steel, ammonia steel and case-hardened steel; (c) free-cutting structural steel; (d) Steel for cold plastic forming: including steel for cold stamping and steel for cold heading. Spring steel bearing steel

(3) Tool steel: a. Carbon tool steel; B. alloy tool steel; C. high-speed tool steel.

(4) Special performance steel: A. Stainless and acid-resistant steel B. Heat-resistant steel includes oxidation-resistant steel, heat-resistant steel and valve steel C. Electrothermal alloy steel; D. wear-resistant steel; E. low temperature steel; F. electrical steel

(5) Professional steel-such as steel for bridges, ships, boilers, pressure vessels and agricultural machinery.

6. Comprehensive classification

(1) Ordinary steel A. Carbon structural steel: (a) Q195; (b) Q2 15(A、B)； (c) Q235(A、B、C)； Q255(A、B)； Question 275 .b B. Low-alloy structural steel C. General structural steel for special purposes

(2) High-quality steel (including advanced high-quality steel)

A. structural steel: (a) high-quality carbon structural steel; (b) alloy structural steel; Spring steel; Free cutting steel; Bearing steel;

(f) Special-purpose high-quality structural steel.

B. Tool steel: (a) carbon tool steel; (b) alloy tool steel; (c) high-speed tool steel. C. Special performance steel: (a) stainless steel and acid-resistant steel; Heat-resistant steel;

Electrothermal alloy steel; (d) electrical steel; (e) High manganese wear-resistant steel.

7. Classification of smelting methods

(1) A. Open hearth steel: (a) acidic open hearth steel; Alkaline open hearth steel.

B converter steel: (a) acidic converter steel; Alkaline converter steel. Or (a) bottom-blown converter steel; side-blown converter

(c) Top blown converter steel.

C. electric furnace steel: (a) electric furnace steel; Electroslag furnace steel; Induction furnace steel; (d) Vacuum consumable furnace steel;

(e) electron beam furnace steel.

(2) according to the deoxidation degree and pouring system, a. boiling steel; B. semi-killed steel; Killed steel; Special killed steel. What is special steel?

There is no uniform definition and concept of special steel. Generally speaking, special steel refers to steel with special chemical composition (alloying), produced by special technology, special structure and properties, which can meet special needs. Compared with ordinary steel, special steel has higher strength and toughness, physical properties, chemical properties, biocompatibility and technological properties.