Tel: 0769-83067750
Tang Zong 13528657111 (wechat same number)
Wang Lin 15118335099 (wechat same number)
Q Q: 806124705
Add: No.454 Taian Road, Chang 'an Town, Dongguan City, Guangdong Province
The product types of construction steel are generally divided into rebar, round steel, wire, disc screw and other categories.
1, steel rebar
The general length of rebar is 9m, 12m, 9m long thread is mainly used for road construction, 12m long thread is mainly used for bridge construction. The specification range of thread is generally 6-50mm, and the country allows deviation. Rebar according to the strength of HRB335, HRB400, HRB500 three models.
2. Round steel
As the name suggests, round steel is a round section of solid long steel, divided into hot rolled, forged and cold drawn three kinds. There are many round steel materials, such as: 10#, 20#, 45#, Q215-235, 42CrMo, 40CrNiMo, GCr15, 3Cr2W8V, 20CrMnTi, 5CrMnMo, 304, 316, 20Cr, 40Cr, 20CrMo, 35CrMo and so on.
The specification of hot-rolled round steel is 5.5-250 mm, 5.5-25 mm is small round steel, supply in straight strips, used as steel bars, bolts and various mechanical parts; Round steel larger than 25 mm, mainly used for the manufacture of mechanical parts or seamless steel blanks.
3. Wire
Common types of wire are divided into Q195, Q215, Q235 three kinds, but the construction steel wire rod only Q215, Q235 two kinds, generally used specifications are 6.5mm diameter, 8.0mm diameter, 10mm diameter, at present China's largest wire rod can reach a diameter of 30mm. In addition to being used as reinforcement for building reinforced concrete, wire can also be used for wire drawing, mesh wire.
4. Disk snails
Disk screw is like wire plate together rebar, is a kind of construction steel. Rebar is widely used in a variety of building structures, and the advantages of the disc screw compared with the screw steel are: the screw steel is only 9-12, and the disc screw can be intercepted at will according to the use needs.
There are many types of steel bars, usually classified by chemical composition, production process, rolled shape, supply form, diameter size, and the use of steel bars in the structure:
(1) According to rolling shape points
① Smooth steel bars: Grade I steel bars (Q235 steel bars) are rolled for smooth circular cross-section, the supply form is disk circle, the diameter is not more than 10mm, the length is 6m~12m.
② Ribbed steel: there are spiral shape, chevron shape and crescent shape three kinds, generally Ⅱ, Ⅲ grade steel rolling shape, Ⅳ grade steel rolling into spiral shape and crescent shape.
③ Steel wire (divided into low carbon steel wire and carbon steel wire two kinds) and steel strand.
④ Cold rolled and twisted steel bars: cold rolled and cold twisted forming.
(2) According to the diameter
Steel wire (diameter 3~5mm),
Fine steel bar (diameter 6~10mm),
Thick steel bar (diameter greater than 22mm).
(3) Classification by use
The wire is generally made of ordinary carbon steel and high-quality carbon steel. According to the different steel distribution catalog and use, the wire rod includes ordinary low carbon steel hot rolled disk rod, high-quality carbon steel wire rod, carbon welding rod rod, tempered thread rod, wire rod for wire rope, piano wire rod rod and stainless steel wire rod.
1. Ordinary low carbon steel hot rolled disc (GB701-65), ordinary low carbon steel hot rolled disc is rolled by low carbon ordinary carbon structural steel or low yield point carbon structural steel, is the largest amount of wire varieties, the most widely used wire rod, also known as flexible wire. This is the general line
Main uses: The general line is mainly used for reinforcing reinforced concrete structures in buildings, and can also be cold-drawn into steel wire, for bundling and other purposes.
2. Ordinary low carbon steel non-torsional controlled cooling and hot rolled wire rod (ZBH4403-88), non-torsional controlled cooling and hot rolled wire rod is made of controlled cooling after rolling by non-torsional high-speed wire mill. The material is the same as that of ordinary wire, but the non-torsional controlled cooling and hot rolled wire rod has the advantages of high dimensional accuracy, good surface quality and high mechanical properties. This is the high line
Main uses: Torsion-free controlled cooling, hot rolling wire dimension accuracy is divided into A, B, C three levels. Class A, B, C accuracy is suitable for wire drawing, construction, packaging and welding rods and other purposes, Class B, C accuracy is suitable for processing into bolts, screws and nuts.
