Cold Rolled Techniques
Yield Point: 545-565mpa
Deformed bar is widely used in buildings, bridges, roads and other engineering construction. Big to highways, railways, bridges, culverts, tunnels, public facilities such as flood control, dam, small to housing construction, beam, column, wall and the foundation of the plate, deformed bar is an integral structure material. With the development of world economy and the vigorous development of infrastructure construction, real estate, the demand for deformed bar will be larger and larger.
Theoretical weight and section area of each diameter as below for your information:
Section area (mm²)
Weight of 12m (kg)
- Q:Do l 8, three grade steel have discs?
- Yes, but because of the higher grade of the three screw thread, they are straight bars. It's not necessary to use grade three for 8 mm.
- Q:JL32 is the finish thread heavy bar 32? What's the difference between normal and ordinary? What does the front JL32 mean?
- Finishing rolling rebar strength than ordinary ribbed steel bars to be high, with spiral thread, tension nut after solid increase concrete prestressed (equivalent prestressed steel wire, steel wire type).
- Q:Does the grade three thread steel with "E" have the same information price as the ordinary three grade thread steel? Is there a big difference?
- As far as I know, the price of information may not be divided into "E" and "E", but there are mandatory requirements on the standard. It is estimated that the price will not be much different.
- Q:What are the specifications of thread steel?
- China's standard recommended nominal diameter of 6, 8, 10, 12, 16, 20, 25, 32, 40, 50mm thread steel series.The supply length is divided into two kinds: foot length and foot length.China's export screw length selection range is 6 ~ 12m,The selection length of Japanese thread steel is 3.5 ~ 10m;Domestic sales of domestic thread steel, if the contract does not specify requirements, usually fixed length of 9m, 12m two length.
- Q:What is the relationship between the price and the hot coil steel prices?
- This is the current situation in the steel market. I'll make a fool of myself:I. energy conservation and emission reduction. The billet supply shortage in Hebei, the steel thread reduced supply, local area and even out of stock.Two, demand. Demand for long products now than flat material, by volume, resulting in coil ascribed weakness.Three, futures. Market confidence is not the same, the thread futures are now definitely heat up the volume of fast. Reflected to the spot, the thread rose fastFour, steel mills. Steel mills under the relationship between cost and supply, thread factory prices have been rising steadily; not hot.Five, inventory. Integrated one or two and four, thread destocking faster.Six, traders mentality. Why do you ask such a question, you are not what the firm confidence, also want to put prices up.
- Q:14 screw steel 1 meters multiple?
- Classified according to geometric shapes, according to the cross section of the rib section and the spacing of the ribs for classification or classification, such as the British Standard (BS4449), the thread steel is divided into type I, type ii. This classification mainly reflects the tightening performance of the threaded steel.
- Q:Difference between round bar and threaded steel in use
- The rebar is much higher than the ordinary, and the low carbon steel rounds are much higher. The heat treated steel is much stronger than the low carbon round steel, nearly twice or even higher.
- Q:Thread steel generally used for more?
- Bars of 6.59 mm in diameter, most of which are rolled into strips; 1040 mm in diameter, usually
- Q:The effect of adding alum on thread steel
- Vanadium can remarkably improve the weldability of ordinary low carbon low alloy steel. Vanadium is an excellent deoxidizer for steel. 0.5% of the vanadium in the steel can refine the grain and improve the strength and toughness. The carbides formed by vanadium and carbon can improve hydrogen corrosion resistance under high temperature and high pressure.
- Q:8 mm thread steel, how much is a bundle?
- Steel is commonly known as hot rolled ribbed bar, belonging to the small steel steel, mainly used for steel reinforced concrete structure frame. In use, some mechanical strength, bending deformation property and welding performance are required.
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