Cold Rolled Steel Sheet Metal Fabrication

The Cold Rolled Steel Sheet Metal Fabrication manufacture!

Dongguan Lemo Precision Metal Products Co.,Ltd focus on manufacturing precision OEM metal parts by CNC machining, CNC turning, CNC milling, sheet metal fabrication, metal stamping and die casting service. We started as a small workshop, now has become one of the leading ISO9001: 2015 certificated manufacturer in the CNC machining industry in China.

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Why choose us

Fast Quotation
No need to keep track of quotes in your mailbox.all production costs based on the design are included in our quotes.

Assured High Quality
We ensure your parts are flawless with ISO-certified quality, comprehensive reports, a standardized inspection report with every order, and rigorous inspections for dimensional accuracy and functionality, solving critical reliability concerns.

Fast Turnaround
We guarantee lead times as fast as 3 days, leveraging infinite capacity and flexible shipping options. Accelerate your sheet metal projects, ensuring timely delivery and a competitive edge.

Sheet Metal Engineering Support
Overcome complex design challenges with lemo's engineering experts. Our expertise ensures precise, innovative solutions, reducing your workload and elevating product quality.

No Demands For A Minimum Order Volume
No limits on the order size & dollar value

On-time Delivery
lemo has the tools and resources in place to ensure customer deliveries are scheduled and executed to the customer promise dates.

Benefits of Cold Rolled Steel

Better Surface Properties: Parts made with cold rolled steel often have smooth and shiny surfaces void of scale or rust. Thus, making them useful when aesthetics is essential.

Greater Strength: They are typically stronger and harder (up to 20% greater strength) than hot rolled steel. This makes them useful for high-stress applications.

Higher Precision: Since cold rolled steel does not shrink while forming, it allows for the fabrication of more precise parts with consistent and accurate shapes.

Various Surface Finish: It supports an extensive range of surface finishes.

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Lemo Capabilities

Service	CNC Machining, CNC turning, CNC milling, 5-axis CNC machining, precision grinding,
	Welding service, Jigs and Fixtures, Heat sinks, Gantry Milling,
	Sheet Metal Fabrication, Die casting, Metal stamping, Injection Molding.
Material	Aluminum, Stainless steel, Brass, Copper, Bronze, Titanium, Cold rolled steel.
Material	Alloy steel, Iron, spring steel, Carbon steel, tool steel, Plastic (Delrin, PVC, PEEK, HDPE, UHMW, etc)
Surface treatment	Anodized, Passivation, heat treatment, painting, Power coating, Black Oxide, Silver/Gold plated
Surface treatment	Electrolytic polishing, Nitriding, Phosphating, Sandblasting, Nickel/Zinc/Chrome/ TiCN plated.
Application	Aerospace, Automotive, Medical, telecommunications, electronic, military, packing,
Application	Sensors, Optical instruments, computers, Motorcycles, agriculture machinery, etc.
Processing	CNC machining, CNC turning, 3/4/5 axis CNC milling, wire-cutting, EDM, grinding.
Processing	Drilling, Tapping, welding, bending, die casting, stamping, etc.
Quality control	100% full inspection
Tolerance	High precision:(+/-) 0.005mm / ISO2768-m
Certificates	ISO9001:2008 , SGS, RoHs
Lead time for sample	5-7 working days
Lead time for orders	12-15 working days
Shipping	DHL, FedEx, UPS, TNT, by air or by sea
Packing	Bubble Wrap/Pearl Wool + Strong Carton+Plywood case
Sea Port	Guangzhou / Shenzhen/ Hongkong
Payment term	T/T,L/C,Paypal,Western Union
Trade terms	EXW, FOB, CNF, CIF, DDU, As per customer's request
Drawing format	JPG, PDF, DWG, DXF, STEP, IGS etc.

Uses of Cold Rolled Steel

Automotive Industry

Due to the high yield strength, cold rolled steel is chiefly used for car body panels, structural parts, and chassis components.

Construction

In construction, cold-rolled steel sheet metal is used for roofing, cladding, and structures since it is strong and well-detailed.

Appliances

Cold rolled steel is applied in home-use commodities such as refrigerators, washing machines, and ovens due to its smoothly rolled surface and its ease of being shaped.

Furniture

This product attracts buyers who seek to obtain a highly polished appearance and, at the same time, the durability of the cold rolled sheets for use in modern furniture designs.

Electronics

Its precision and conductivity make cold rolled steel suitable for electronic enclosures and components.

Production method of cold rolled steel sheet

Cold rolling – The thickness accuracy of the cold rolled product is decided by this process. Computer control is employed for the controlling method.

Cleaning – Rolling oil on the cold rolled strip is burned off throughout this method which is next to cold rolling as mentioned above.

Skin pass rolling – Treated coils are gently rolled by the skin pass mill to prevent a defect referred to as stretcher strain to enhance strip shape and regulate mechanical properties.

Finishing – After skin pass rolling, coils are processed at the recoiling line, where they are cut to manufacture product coils.

Cold-rolled steel sheet standards

No	Steel sheet barem	Weight	Standards
No	T x R x D (mm)	(Kg/sheet)	(mm)
1	2 x 1250 x 2500	49,06	SS400 – China
2	3 x 1500 x 6000	211,95	SS400 – China
3	4 x 1500 x 6000	282,6	SS400 – Russia
4	4 x 1500 x 6000	353,3	SEA1010 – Saudi Arabia
5	5 x 1500 x 6000 K	353,25	SS400 – Russia
6	6 x 1500 x 6000	423,9	SS400 – China
7	6 x 1500 x 6000	423,9	SS400 – Russia
8	6 x 1500 x 6000 K	423,9	SS400 – Russia
9	6 x 1500 x 6000	423,9	CT3 – KMK
10	6 x 1500 x 6000	423,9	CT3 – DMZ
11	8 x 1500 x 6000	565,2	CT3 – KMK
12	8 x 1500 x 6000	565,2	CT3 – DMZ
13	8 x 1500 x 6000	565,2	SS400 – Russia
14	8 x 1500 x 6000 K	565,2	SS400 – Russia
15	8 x 1500 x 6000	565,2	SS400 – China
16	10 x 1500 x 6000	706,5	SS400 – China
17	10 x 1500 x 6000	706,5	SS400 – Nga
18	10 x 1500 x 6000 K	706,5	SS400 – Nga
19	10 x 1500 x 6000	706,5	CT3 – KMK
20	10 x 1500 x 6000	706,5	CT3 – DMZ
21	12 x 1500 x 6000	847,8	SS400 – China
22	12 x 1500 x 6000	847,8	CT3 – DMZ
23	14 x 1500 x 6000	989,1	SS400 – China
24	14 x 2000 x 6000	1318,8	SS400 – China
25	14 x 2000 x 12000	989,1	SS400 – Japan
26	16 x 1500 x 6000	1130,4	SS400 – Russia
27	16 x 2000 x 12000	3014,1	SS400 – Japan
28	16 x 2000 x 12000	3014,1	SS400 – China
29	16 x 2030 x 6000	3059,6	SS400 – China
30	16 x 2030 x 12000	3059,6	SS400 – China
31	18 x 2000 x 12000	3391,2	SS400 – Japan
32	20 x 2000 x 12000	3768	SS400 – China
33	20 x 2500 x 12000	4710	SS400 – China
34	22 x 2000 x 6000	2072,4	SS400 – China
35	25 x 2500 x 12000	5887,5	SS400 – China
36	30 x 2000 x 12000	5652	SS400 – China
37	30 x 2400 x 12000	7536	SS400 – China
38	40 x 1500 x 6000	2826	SS400 – China
39	40 x 2000 x 12000	7536	SS400 – China
40	50 x 2000 x 6000	4710	SS400 – China

FAQ

Q: How does the strain hardening effect in cold rolled steel contribute to its mechanical properties?

A: Strain hardening, or work hardening, occurs when cold rolled steel is deformed at room temperature, increasing its dislocation density and making it more resistant to further deformation. This results in improved tensile strength and hardness compared to hot rolled steel. The cold rolling process compresses the steel more intensively, aligning the metal's microstructure and enhancing its mechanical properties for demanding applications.

Q: What are the implications of tighter dimensional tolerances in cold rolled steel for manufacturing and design?

A: Tighter dimensional tolerances in cold rolled steel enable precise fabrication of components with minimal need for further machining or adjustments. This precision is critical for applications where exact measurements are required, such as in aerospace and automotive industries. It reduces waste and improves consistency in high-performance components, leading to more efficient manufacturing processes and better overall product quality.

Q: How does the choice between full-hard, half-hard, and quarter-hard cold rolled steel affect its applications and performance?

A: The choice among full-hard, half-hard, and quarter-hard cold rolled steel depends on the required balance between strength, flexibility, and formability. Full-hard steel offers maximum strength and minimal formability, suitable for high-stress applications needing superior durability. Half-hard and quarter-hard steels provide varying degrees of strength and formability, allowing for easier processing while still offering enhanced mechanical properties compared to hot rolled steel. Selecting the appropriate hardness level aligns with specific project requirements and application needs.

Q: What is the thickness range of cold-rolled steel?

A: These types of sections are cold-formed from steel sheet, strip, plate, or flat bar in roll forming machines, by press brake (machine press) or bending operations. The material thicknesses for such thin-walled steel members usually range from 0.0147 in. (0.373 mm) to about ¼ in. (6.35 mm).

Q: What is the hardness of cold rolled steel?

A: Hardness. Hot rolled steel is considered soft. It is malleable and ductile and has a Brinell hardness of 137. Cold rolled steel is harder, tougher, less ductile and malleable and has a Brinell hardness of 167.

Q: What is the temperature range for cold rolled steel?

A: Unlike hot rolling, which involves working metals at elevated temperatures (850 degrees celsius to 1200 degrees celsius), cold rolling is performed at room temperature (60 degrees celsius to 180 degrees celsius). This process of cold rolling offers enhanced strength, formability, and dimensional precision.

Q: What is the cutting speed for cold rolled steel?

A: Machinability is rated at 78% of B1112. Average cutting speed 130 ft/min.

We're well-known as one of the leading cold rolled steel sheet metal fabrication manufacturers and suppliers in China. If you're going to buy high quality cold rolled steel sheet metal fabrication, welcome to get quotation from our factory. Also, customized service is available. aluminium alloy gravity die castings