Hot and Cold Rolled Steel Strip Coils with High Quality in China

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Loading Port:
Qingdao
Payment Terms:
TT OR LC
Min Order Qty:
122 m.t.
Supply Capability:
122222 m.t./month

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Item specifice:

Standard: EN,AISI Technique: Hot Rolled,Extruded Shape: Oval,U Channel
Surface Treatment: Dry,Coated Steel Grade: SS400-SS490 Certification: ISO
Thickness: 12 Length: 12 Net Weight: 12

Product Description:

Description of Steel Strip Coils:

Steel strips is one of our main products that is widely used in making band saw blade & other blades to cut paper, weed, etc.


Festures  of  Steel Strip Coils:

1. Each coil is closely covered by oil paper or plastic film.

2. Outside it is firmly packed with sack cloth or compound paper.

3. Steel strap or PP strap to pack the outside to ensure safety.


Specifications of Steel Strip Coils:

Our Products are packed and labeled according to rigorous internal regulations and customer's requests. Great care is taken to avoid any damage which might be caused during storage or transportation. In addition, clear labels are tagged on the outside of the packages for easy identification of the product and quality information. 


Images of Steel Strip Coils:

Hot and Cold Rolled Steel Strip Coils with High Quality in China

FAQ

1.What's your MOQ?
25MT, it is for one container.
2.Do you have QC teams?
Yeah, sure, our QC team is very important, they will keep the quality control for our products.
3. What's your normal delivery time?
Our delivery time about 10-20days for standard sizes, if you have other requirements like hardness  and width ,it is about 20-40days. 

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Q:What's the meaning of "double light" in strip cold rolling?
Cold: cold rolled steel is cold-rolled steel production. Cold rolling at room temperature under the conditions of No.1 steel plate further rolling thin thickness steel plate. Compared with hot-rolled steel, cold-rolled steel plate thickness is more accurate, and the surface is smooth and beautiful, but also has superior mechanical properties, especially the processing performance because of cold rolled. The volume relatively brittle and hard, not suitable for processing, so typically cold rolled steel demand after annealing, pickling and smooth surface will be delivered to customers. The maximum thickness of cold rolling is below 0.1--8.0MM, most of the factories such as cold rolled steel plate thickness is below 4.5MM; minimum thickness, width is according to the plant equipment capacity and market demand and decision.
Q:What is the cause of the deviation of the strip in the rolling process? How to deal with it?
Roll, roll grinding after due to severe pressure, taper, makes the school not to the operator in the rolling process of double pendulum regulation increases taper, will cause serious side light waves caused by shape defects, cause strip deviation and broken belt.
Q:Reasons for black side of hot strip galvanizing
Solution: contains too much impurity in the bath can use saline and Potassium Permanganate rushed ang impurity, or adding zinc chloride solution to current economic treatment; the strict monitoring of the production process to prevent the emergence of this phenomenon; low content of zinc chloride can be solved by adding zinc chloride.
Q:What is cold rolled strip and hot rolled strip? Why is it called strip steel?
The only so called strip is because this kind of material is shaped, say vulgar point like our waist belt like si,
Q:What is the difference between strip and coil?
The coil is a thin steel sheet with a thickness of not more than 6 mm, usually less than 3 millimeters, but is rolled with a large mill due to its wide width. The width of the rolled strip is no more than 0.2 meters; the mill used is small, of course, the same thickness of the same material, the price of the coil is also more expensive than strip.
Q:The relation between hot rolled strip and cold rolled coil, hot rolled strip and cold rolled strip
Cold rolled coil (annealed): hot rolled coil obtained by pickling, cold rolling, batch annealing, flattening, and finishingThat is, the biggest difference between hot rolled coil and cold rolled coil is that the heat treatment process is different. (annealing process)Compared to the specific heat roll, the cold-rolled roll has a bright surface and a high degree of finish, but it produces more internal stress and is often annealed after cold rolling.
Q:The degreasing time is too long, will the strip surface be oxidized?
Galvanized steel plate in spray, generally do phosphating treatment, the parameters of free acid phosphating solution should be kept low, and high temperature, acid, zinc ions reduced excessive reaction, resulting in coarse crystallization. Reference: Fa:0.8-1.5 Ta:17-28 acid ratio of about 25, the temperature can be 35-45 degrees.
Q:What about the strip scraping in the annealing furnace?
Thus forming an air knife scratch. This kind of defect causes the product to be wasted because the coating is scratched. Proper control of strip tension in productionForce and adjust the nozzle distance, can avoid this kind of defect happen.
Q:What is the difference between galvanized steel cold base galvanized steel strip and hot galvanized steel strip?
In addition because of the high density of zinc, galvanized steel coating with the same aluminium zinc plate in the price there is no advantage, because the control relationship between zinc flower, zinc plating is more difficult to control, and anti oxidation performance and ALuminum zinc is poor compared to several times, so now mainly in the aluminum zinc as the main building materials and its the performance is 3-4 times of zinc, but the current electronics industry because of influence of hot dip galvanizing plate conductivity, appearance or using mainly low coating, building materials mainly to hot-dip aluminum zinc 100g/ square meters above. The main hot dipped aluminum zinc is 55%AL and 44.5%Zn.
Q:What are the characteristics of cold rolled strip technology?
Pickling process: remove the oxide film on the surface of the raw material to ensure the high quality of the material;Rolling process: the raw material is rolled into the thickness required by the customer with a high precision mill;Bell type bright annealing: the material which is hardened by rolling can be restored to normal flexibility;Fine leveling: the softened material is refined into flat and easy to process finished material;Finished product: the finished product is packed with fine finish;Flat, strip: according to different requirements of customers, finished products straight, strip.

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