Cold rolled steel sheet plate for building materials industry

Short Description:

Cold-rolled coil refers to a steel strip that is directly rolled into a certain thickness with a roll at room temperature and rolled into a whole coil with a coiler. Compared with hot-rolled coils, cold-rolled coils have a brighter surface and higher finish, but will generate more internal stress and are often annealed after cold-rolling.

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Product Detail

Product Tags

Product Details

Thickness is 0.1-8mm

Width is 600-2 000mm

The length of the steel plate is 1 200-6 000mm

Grades: Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06 DC01-DC06 CR220IF HC340LA 590DP 220P1 CR220BH CR42 DC01-DC06 SPCC-J1 SPCC-J2 SPCD SPCE TYH THD SPCC-SC TLA SPCC DC01

Product Introduction

Using hot-rolled steel coil as raw material, after pickling to remove oxide scale, cold continuous rolling is carried out, and the finished product is rolled hard coil. The cold work hardening caused by continuous cold deformation increases the strength, hardness and toughness and plastic index of rolled hard coil. , so the stamping performance will deteriorate and can only be used for parts with simple deformation. Hard-rolled coils can be used as raw material for hot-dip galvanizing plants, because hot-dip galvanizing lines are equipped with annealing lines. The weight of the rolled hard coil is generally 20-40 tons, and the hot-rolled pickled coil is continuously rolled at room temperature. The inner diameter is 610mm.

Production Process

Because it has not been annealed, its hardness is very high (HRB is greater than 90), and its machinability is extremely poor, so it can only perform simple directional bending less than 90 degrees (perpendicular to the coiling direction).

To put it simply, cold rolling is processed and rolled on the basis of hot rolled coils. Generally speaking, it is a process of hot rolling---pickling---cold rolling.

Cold-rolled is processed from hot-rolled sheets at room temperature. Although the temperature of the steel sheet will be heated during the processing, it is still called cold-rolled. Due to the continuous cold deformation of hot rolling, the mechanical properties are relatively poor and the hardness is too high. It must be annealed to restore its mechanical properties, and those without annealing are called hard rolled coils. Hard-rolled coils are generally used to make products that do not require bending or stretching, and those with a thickness of less than 1.0 are rolled on both sides or four sides with good luck.

Application

Cold-rolled strips are widely used, such as automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, canned food, etc. Cold-rolled sheet is the abbreviation of ordinary carbon structural steel cold-rolled sheet, also known as cold-rolled sheet, commonly known as cold-rolled sheet, and sometimes mistakenly written as cold-rolled sheet. The cold plate is a hot-rolled steel strip of ordinary carbon structural steel, which is further cold-rolled into a steel plate with a thickness of less than 4mm. Due to rolling at room temperature, no scale is produced, therefore, the cold plate has good surface quality and high dimensional accuracy, coupled with annealing treatment, its mechanical properties and process properties are better than hot-rolled steel sheets, in many fields, especially In the field of home appliance manufacturing, it has gradually replaced hot-rolled sheet steel.

Packing&Delivery

Packaging Details:	Standard seaworthy packing(plastic&wooden) or according to the customer's requests
Delivery Detail:	3-10days, mainly decided by the quantity of the order
Port：	Tianjing/Shanghai
shipping	Sea ship by container

FAQ

1. How can I get a quotation from you ?
You can leave us message, and we will reply every message in time . Or we may talk on line by Trademanager . And you can also find our contact information on contact page .

2. Can I get samples before order ?
Yes, of course. Usually our samples are free . we can produce by your samples or technical drawings . We can build the molds and fixtures .

3. What is your delivery time ?
A. The time of delivery is usually around 3-7 workdays ;
B. We can send out in 2 days , if it has stock .

4. What is your payment terms ?
Our usual payment term is 30% deposite, and rest against B/L. L/C is also acceptatble .

5. How can you garantee what I got will be good ?
We are factory with 100% pre-delivery inspection which garantee the quality .

6. How do you make our business long-term and good relationship ?
A. We keep good quality and competitive price to ensure our customers benefit ;
B. We respect every customer as our friend and we sincerely do business and make friends with them no matter where they come from