2. Rebar futures are futures varieties with rebar as the subject matter. The steel futures that Shanghai Futures Exchange can trade are rebar futures and wire futures. The transaction unit of the rebar futures standard contract is per lot 10 ton, and the delivery unit is 300 tons per warehouse receipt. The delivery shall be an integral multiple of each warehouse receipt.
Maximum fluctuation limit of daily price: no more than 6% of the settlement price of the previous trading day.
Minimum trading margin: 5% of the contract value.
Transaction fee: not higher than two ten thousandths of the transaction amount (including risk reserve).
Contract delivery month:1~ 65438+February.
Trading time: 9: 00 am ~10:15/kloc-0:30 ~ 65438+0: 30 pm ~ 3: 00 pm 21:00-23: 00.
Last trading day: 15 of the delivery month of the contract (postponed in case of legal holidays).
Minimum delivery unit: 300 tons
Delivery date: five consecutive working days after the last trading day.
Delivery place: delivery warehouse designated by the exchange.
Delivery grade
Standard: φ 16mm, φ 18mm, φ20mm, φ22mm and φ25mm steel bars conforming to the national standard GB 1499.2-2007 "Steel for Reinforced Concrete Part 2: Hot Rolled Ribbed Steel Bars" or HRB400. Substitution: φ 16mm, φ 18mm, φ20mm, φ22mm, φ25mm rebar or HRBF335 brand conforming to the national standard GB 1499.2-2007 Steel for Reinforced Concrete Part 2: Hot Rolled Ribbed Rebar.
First, rebar is ribbed steel bar, which is divided into hot-rolled ribbed steel bar and cold-rolled ribbed steel bar. Rebar is also called deformed steel bar or special-shaped steel bar. Different from ordinary round steel, there are longitudinal bars and transverse bars on the surface, which are usually evenly distributed along the length direction. Rebar is a kind of small steel, which is mainly used for the skeleton of reinforced concrete building components. It is required to have certain mechanical strength, bending deformation performance and process welding performance in use. The raw billet used to produce rebar is carbon structural steel or low alloy structural steel that has been killed and melted, and the finished rebar is delivered in hot-rolled shape, normalized or hot-rolled state.
Secondly, there are two commonly used classification methods for steel bars:
1) is classified according to geometric shape, and classified or classified according to cross-sectional shape of transverse ribs and rib spacing. For example, in British Standard (BS4449), steel bars are divided into type I and type II. This classification mainly reflects the grip performance of steel bars.
Secondly, rebar is classified according to performance (grade). For example, in China standard (GB 1499), rebar is divided into three grades according to strength grade (yield point/tensile strength). According to Japanese industrial standard (JISG3 1 12), rebar can be divided into five categories according to its comprehensiveness. British Standard (BS446 1) also stipulates several grades of steel bar performance test. In addition, steel bars can also be classified according to their uses, such as ordinary steel bars for reinforced concrete and heat-treated steel bars for prestressed reinforced concrete. Steel bars are ribbed bars, which are divided into hot-rolled ribbed bars and cold-rolled ribbed bars.