Hot rolled coil is a steel plate made of slab as raw material, heated and rolled by rough rolling and finishing mill. China is the largest producer, consumer and exporter of hot-rolled coils in the world. The hot-rolled coil with the thickness of Q235B mm and the width of 65438+SS400 mm is selected as the standard product and the subject matter of the hot-rolled coil futures contract.

Second, the main purpose of hot rolled coil

Hot rolled coil has excellent properties such as high strength, good toughness and easy processing and forming, and is an important steel. It is mainly used in the following places:

1, structural steel is one of the most important uses of hot rolled coil, which is used in construction, machinery, automobile, oil and gas and other industries.

2. Deep-process the hot-rolled thin coil plate with the thickness less than or equal to ≤3.0mm into cold-rolled coil plate substrate, hot-rolled pickling plate and hot-rolled galvanized plate.

3. It is used to manufacture the hull and deck of marine, coastal and inland transport vessels.

4. Petroleum, chemical and other industries manufacture pressure vessels or other similar equipment.

5. Used for bridge and railway construction.

6. Oil and gas pipeline steel is also the main application field of hot rolled coil.

Three, the main classification of hot rolled coil

Hot rolled coil generally includes medium and wide steel strip, thin and wide hot rolled steel strip and hot rolled plate. Medium-thick wide strip steel is one of the most representative varieties, and its output accounts for about two-thirds of the total output of hot rolled coils. The subject matter of hot-rolled coil futures contracts listed on Shanghai Futures Exchange belongs to medium plate and wide steel strip.

Four, hot rolled coil production capacity and regional distribution

By the end of 2065438+April 2009, the annual production capacity of hot coils in China was about 250 million tons. Among them, there are 37 sample production enterprises, with an annual production capacity of 204 million tons. * * * has 64 production lines, and 59 have actually started, with an operating rate of 92. 19%. Regionally, North China is the region with the largest hot-rolled coil production capacity in China, with the production capacity of103.985 million tons, accounting for 42% of the total domestic production capacity, of which the annual production capacity of Hebei Province alone is as high as 92.963 million tons; East China's production capacity is 57 1.23 million tons, accounting for 23% of the total domestic production capacity; The production capacity in Northeast China is 41493,400 tons, accounting for17% of the total domestic production capacity; The production capacity in Central and South China is 3 1.63 million tons, accounting for 7% of the total domestic production capacity; Southwest * * * production capacity is 2 1.9 1.8 million tons, accounting for 9% of the total domestic production capacity; The production capacity in northwest China is 6 1.23 million tons, accounting for 2% of the total domestic production capacity.