treaty wording
Steel bars are ribbed bars, which are divided into hot-rolled ribbed bars and cold-rolled ribbed bars. 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.
There are two common classification methods of steel bars: one is to classify according to the geometric shape of steel bars, and the other is to classify or classify according to the cross-sectional shape of transverse bars and the spacing between bars. For example, steel bars are classified into Type I and Type II in British Standard (BS4449). 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.
China is a big producer of rebar. Due to the large investment in fixed assets in China, rebar is basically used to meet domestic demand, and the export volume is not much. In recent years, with the development of infrastructure construction in China, the annual output of rebar has been increasing at a rate of more than 16.6%. The annual output has increased from 37.35 million tons and 5438+0 in 2006 to 1.37 million tons in 2007, an increase of 64.02 million tons and an increase of 5438+0 over 2006. It is estimated that the output in 2008 will be 97.97 million tons. Among the 22 kinds of steel products classified by varieties, rebar accounts for the largest proportion of the total steel products, which decreased from 23.8% in 200 1 to 15.9% in 2007, a decrease of 7.9 percentage points. The year with the largest proportion was 2003, accounting for 25%, accounting for a quarter of the total steel.
There are few imports of steel products, but many exports, and they are rising rapidly year by year. However, the proportion of net exports in steel bar production is very low.
Delivery quality regulation
(1) The quality of steel bars used for physical delivery shall comply with the relevant provisions of GB 1499.2-2007 Steel for Reinforced Concrete Part 2: Hot Rolled Ribbed Steel Bars, and their brands are HRB400, HRBF400, HRB335 and HRBF335. (2) The size, shape, weight, allowable deviation, packaging, marks and quality certificates of the delivered steel bars shall comply with the provisions of the national standard GB 1499.2-2007 "Steel for Reinforced Concrete Part 2: Hot Rolled Ribbed Steel Bars". (3) The length of steel bars used for physical delivery is 9m or12m. (4) The steel bars of each standard warehouse receipt shall be made of goods produced by the same manufacturer, with the same brand, registered trademark, same nominal diameter and same length, and the production date of the steel bars that make up each warehouse receipt shall not exceed two consecutive days, with the earliest date as the production date of the warehouse receipt. (5) The rebar of each standard warehouse receipt shall be a registered brand recognized by the Exchange, and the corresponding quality certificate shall be attached. (6) The delivery of steel bars shall be measured by actual weighing. The physical overflow of each warehouse receipt shall not exceed 3%, and the overflow of the increase or decrease clause shall not exceed 0.3%. (7) The warehouse receipt shall be issued by the delivery warehouse designated by this Exchange after passing the inspection.
Production enterprises and registered brands recognized by the Exchange.
Rebar used for physical delivery shall be the brand registered by the Exchange. The specific registered brands and charging standards shall be stipulated and published by the Exchange.
Designated delivery warehouse
Designated and announced by the exchange, and the premium standard for warehouses delivered in different places shall be stipulated and announced by the exchange.
Tips: Please stay away from illegal fund-raising, illegal fund allocation, financial management on behalf of customers, false or misleading propaganda/inducing transactions, illegal consultation/pending orders, providing trading software and other illegal acts. Futures company headquarters, welcome to ask! Can reduce transaction costs!