Continuous Black Annealed Cold Rolled Steel Coil DC01 DC02 DC03

• After-sales Service: Contact Supplier
• Warranty: Contact Supplier
• Standard: ASTM, AISI
• Certification: ISO
• Surface Treatment: Polished
• Technique: Cold Rolled
• Application: Ship Plate
• Edge: Slit edge
• Stock: Stock
• Product Name: Cr, Cold Rolled Steel Coil
• Mini Order: 25 Tons
• Materials: DC01, DC02, DC03, DC04, SPCC, Spcd
• Quality: Prime
• Width: 600-1250mm
• Thickness: 0.15-2mm
• Standrad: ASTM, AISI, JIS, GB
• Transport Package: Sea Worth Packing
• Specification: 0.15mm-2mm
• Trademark: ZUNKAI
• Origin: China
• HS Code: 7411219000
• Production Capacity: 5000000ton Eachyear

Product Description

 

Product Description

 

COLD ROLLED STEEL COIL
 

Cold rolling: use hot-rolled steel coils as raw materials, pickling to remove scale, and then carry out continuous cold rolling. The finished product is hard rolled coils. Due to the cold hardening caused by continuous cold deformation, the strength, hardness, and toughness of hard rolled coils increase. The plastic index decreases, so the stamping performance will deteriorate, and it can only be used for parts with simple deformation. Hard-rolled coils can be used as raw materials for hot-dip galvanizing plants, because hot-dip galvanizing units are equipped with annealing lines. The weight of hard-rolled coils is generally 6-13.5 tons, and the steel coils are continuously rolled at room temperature for hot-rolled pickled coils. The inner diameter is 610mm.

 

Product Name	Cold rolled steel coil	Packing	Standard export packing
Usage	building, roofing sheet, safety fence	Grade	SPCC/DC01/ST12/SPCD/SPCE
Standard	AISI/ASTM/JIS	Delivery Time	15-21 days
Place of Origin	Shandong,China	Technique	cold rolled
Width	600-1250mm	MOQ	5 tons
Thickness	0.15-2mm	Price Term	T/T, D/P, L/C, Cash

 

 

 

Cold rolling is rolling under recrystallization, but it is generally understood as rolling using normal temperature rolling materials. Aluminum cold rolling is divided into plate rolling and foil rolling. Those with a thickness of 0.15~ or more are called plates, and those with a thickness of 0.15~ or less are called foils. Europe and the United States mostly use 3~6 continuous rolling mills as cold rolling equipment.

Since there is no heating during the production process, there are no defects such as pits and scales that often occur in hot rolling, and the surface quality is good and the finish is high. Moreover, the dimensional accuracy of cold-rolled products is high, and the performance and structure of the products can meet some special requirements for use, such as electromagnetic properties and deep drawing properties.

Specifications: thickness 0.2-4mm, width 600-2 000mm, steel plate length 1 200-6 000mm.

Grade: Q195A-Q235A, Q195AF-Q235AF, Q295A(B)-Q345 A(B); SPCC, SPCD, SPCE, ST12-15; DC01-06

Performance: Low carbon steel grades are mainly used, which require good cold bending and welding performance, as well as certain stamping performance.

Detailed Photos

 

 

 

 

Cold rolled coil is hot rolled coil as raw material, at room temperature, the highest grade EDDQ, the highest strength of 590MPa, has the advantages of high dimensional

accuracy, good surface quality, convenient processing, material saving and so on.

It is widely used in home appliance industry, automobile industry, machinery industry,construction industry, galvanized and other industries.  


 

Chemical Properties of Frequently-used Stainless Steel Material Grade
UNS	ASTM	EN	JIS	C%	Mn%	P%	S%	Si%	Cr%	Ni%	Mo%
S20100	201	1.4372	SUS201	≤0.15	5.5-7.5	≤0.06	≤0.03	≤1.00	16.0-18.0	3.5-5.5	-
S20200	202	1.4373	SUS202	≤0.15	7.5-10.0	≤0.06	≤0.03	≤1.00	17.0-19.0	4.0-6.0	-
S30100	301	1.4319	SUS301	≤0.15	≤2.00	≤0.045	≤0.03	≤1.00	16.0-18.0	6.0-8.0	-
S30400	304	1.4301	SUS304	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	8.0-10.5	-
S30403	304L	1.4306	SUS304L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	8.0-12.0	-
S30908	309S	1.4833	SUS309S	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	22.0-24.0	12.0-15.0	-
S31008	310S	1.4845	SUS310S	≤0.08	≤2.00	≤0.045	≤0.03	≤1.50	24.0-26.0	19.0-22.0	-
S31600	316	1.4401	SUS316	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	16.0-18.0	10.0-14.0	2.0-3.0
S31603	316L	1.4404	SUS316L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	16.0-18.0	10.0-14.0	2.0-3.0
S31703	317L	1.4438	SUS317L	≤0.03	≤2.00	≤0.045	≤0.03	≤0.75	18.0-20.0	11.0-15.0	3.0-4.0
S32100	321	1.4541	SUS321	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	17.0-19.0	9.0-12.0	-
S34700	347	1.455	SUS347	≤0.08	≤2.00	≤0.045	≤0.03	≤0.75	17.0-19.0	9.0-13.0	-
S40500	405	1.4002	SUS405	≤0.08	≤1.00	≤0.04	≤0.03	≤1.00	11.5-14.5	≤0.60	-
S40900	409	1.4512	SUS409	≤0.08	≤1.00	≤0.045	≤0.03	≤1.00	10.5-11.75	≤0.50	-
S43000	430	1.4016	SUS430	≤0.12	≤1.00	≤0.040	≤0.03	≤0.75	16.0-18.0	≤0.60	-
S43400	434	1.4113	SUS434	≤0.12	≤1.00	≤0.040	≤0.03	≤1.00	16.0-18.0	-	-
S44400	444	1.4521	SUS444L	≤0.025	≤1.00	≤0.045	≤0.03	≤1.00	17.5-19.5	≤1.00	-
S40300	403	-	SUS403	≤0.15	5.5-7.5	≤0.04	≤0.03	≤0.50	11.5-13.0	≤0.60	-
S410000	410	1.40006	SUS410	≤0.15	≤1.00	≤0.035	≤0.03	≤1.00	11.5-13.5	≤0.60	≤1.00
S42000	420	1.4021	SUS420J1	0.16~0.25	≤1.00	≤0.04	≤0.03	≤1.00	12.0-14.0	≤0.75	≤1.00
S440A	440A	1.4028	SUS440A	0.60~0.75	≤1.00	≤0.04	≤0.03	≤1.00	16.0-18.0	-	≤0.75
S32750	SAD2507	1.441		≤0.03	≤1.2	≤0.035	≤0.02	≤0.80	24.0-26.0	6.0-8.0	3.0-5.0
S31803	SAF2205	1.4462		≤0.03	≤2.0	≤0.03	≤0.02	≤1.00	21.0-23.0	4.0-6.5	2.5-3.5
N08904	904L	1.4539		≤0.0.3	≤2.0	≤0.035	≤0.03	≤1.00	18.0-20.0	23.0-25.0	3.0-4.0

 

 Some of our products:

 

 

 

Because cold rolling has not been annealed, its hardness is very high (HRB greater than 90), and its machinability is extremely poor. 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 rolling is processed from hot-rolled plates at normal temperature. Although the steel plate will heat up due to rolling during the processing process, it is still called cold rolling. The cold rolling formed by hot rolling through continuous cold deformation has relatively poor mechanical properties and too high hardness. It must be annealed to restore its mechanical properties. Without annealing, it is called hard rolled coil. Hard-rolled coils are generally used to make products that do not need to be bent or stretched. If the thickness is less than 1.0, hard-rolled coils are lucky to be bent on both sides or four sides.    
 

detection

 

 

Application

 

Cold rolling is widely used, such as automobile manufacturing, electrical products, rolling stock, aviation, precision instruments, food cans, etc.

The cold plate is a hot-rolled 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 iron oxide scale is produced. Therefore, the cold plate has good surface quality and high dimensional accuracy. With the addition of annealing treatment, its mechanical properties and process properties are superior to hot-rolled thin steel plates. In many fields, especially In the field of home appliance manufacturing, it has gradually replaced hot-rolled steel sheets.
 

Packaging & Shipping

 

 

 

 

 

Company Profile

 

 

 

Jinan Zunkai Group founded in 2002, with five branch companies and is well-funded. Our annual sales nearly one billion, about 300,000 tons steel.

Our company is located in Jinan City, Shandong Province. We entered into a strategic partnership with Bao Steel, Laiwu Steel, Rizhao Steel, Handan Steel, Anyang Steel, Maanshan Steel and other domestic large steel companies.

Zunkai is the largest steel agent in Shandong Province, we also have ourselves steel process factory with 100000 Square meter for steel laser cutting, surface treatment and other further processing , and our stock always more than 20,000 tons.

Zunkai Group mainly engaged in : PPGI ,galvanized steel , steel plate , round bar, steel pipe ,Stainless steel product ,angle bar, steel pile ,H beam ,I beam, angle, Channel flat steel etc .

Our good quality and reliable service will be your best trusted partner.

Sincerely wish to building long and regular business with you forever!!!

 

 

 

Customer Question & Answer

 

Q1 : What is your payment terms?
A1 : 30% deposit & balance against B/L or L/C at sight.
 

Q2 : What is your delivery time & loading port?
A2 : Generally it is within 7 days after received advance payment or L/C. If the goods is not in stock , according to the quantity
it is within 15 days. Loading port:QINGDAO or TIANJIN.

Q3 : Do you have MOQ request ? Can offer free samples?
A3 : Our MOQ is usually ONE ton. Free samples is ok but need pay thecourier charge. Charge can be deduct in future orders.

Q4 : What are your company's main products?
A4 : Our main products are Aluminum products, Steel products, Stainless steel products, Galvanized steel products, Colorized steel Coil, etc.

Q5 : Are you a factory or trading company?
A5 : We have both factory and trading company,own branch factory and warehouse in Shandong Province to provide you nice
goods with best price and good quality.