Cold-Rolled C Bar

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Loading Port:
Tianjin Port,China
Payment Terms:
TT or LC
Min Order Qty:
20Tons m.t.
Supply Capability:
1000 tons per month m.t./month

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Product Description:

 Specifications of Cold-Rolled C Bar:

1. We are definitely speciallizing in manufacturing and supplying channel steel as per japanese standard, which is characterised with high mechanical strength and competitive prices.

 

2. The sections in details are as followings in the table-1

 

Size

Weight(kg/m)

Size

Weight(kg/m)

80×40×20×2.5

3.925

180×60×20×3

8.007

80×40×20×3

4.71

180×70×20×2.5

7.065

100×50×20×2.5

4.71

180×70×20×3

8.478

100×50×20×3

5.652

200×50×20×2.5

6.673

120×50×20×2.5

5.103

200×50×20×3

8.007

120×50×20×3

6.123

200×60×20×2.5

7.065

120×60×20×2.5

5.495

200×60×20×3

8.478

120×60×20×3

6.594

200×70×20×2.5

7.458

120×70×20×2.5

5.888

200×70×20×3

8.949

120×70×20×3

7.065

220×60×20×2.5

7.4567

140×50×20×2.5

5.495

220×60×20×3

8.949

140×50×20×3

6.594

220×70×20×2.5

7.85

160×50×20×2.5

5.888

220×70×20×3

9.42

160×50×20×3

7.065

250×75×20×2.5

8.634

160×60×20×2.5

6.28

250×75×20×3

10.362

160×60×20×3

7.536

280×80×20×2.5

9.42

160×70×20×2.5

6.673

280×80×20×3

11.304

160×70×20×3

8.007

300×80×20×2.5

9.813

180×50×20×2.5

6.28

300×80×20×3

11.775

180×50×20×3

7.536

180×60×20×2.5

6.673

Table-1

 

 

3. The mechanical property of Cold-Rolled C Bar in the table-2:

Grade

Yield Strength,N/mm²

Extension Strength N/mm²

Thickness of Steel,mm

≦16

>16-≦40

>40-≦100

>100

SS330

≧205

≧195

≧175

≧165

330-430

SS400

≧245

≧235

≧215

≧205

400-510

SS490

≧285

≧275

≧255

≧245

490-610

SS540

≧400

≧390

-

-

≧540

                   Table-2

 

4. The chemical composition of Cold-Rolled C Bar in the table-3

Grade

Element(%)

C

Mn

P

S

SS330

--

--

≦0.050

≦0.050

SS400

SS490

SS540

≦0.30

≦1.60

≦0.040

≦0.040

                    Table-3

 

 

Usage of Cold-Rolled C Bar:

1.The Cold-Rolled C Bar can be devided into two kinds, namely common channel steel and light channel steel. The sizes of CR rolled common channel steel range from 5# to 40#. Meanwhile, the channel steel can be divided into cold forming sectional equal channel steel, cold forming sectional unequal channel steel, cold forming inner edge channel steel and outer edge channel steel.

2.The Cold-Rolled C Bar is usually used for arch-itechtural structure, and they could be welded in order to support or hang a vari-ety of facilities. They are also usually used in combination with I beam. The channel steel with sizes under 14# is usually applied to construction engineering, as purline, while the channel steel with sizes above 16# is more likely to be used in building vehicle chassis structure and mechanical structure. Furthermore, the channel steel in sizes above 30# are target at building bridge structure, as tension bar.

3.In a word, the channel steel must possess perfect welding property, riveting property and mechanical property and so on.

 

 

Package & Delivery of Cold-Rolled C Bar:

1.The Cold-Rolled C Bar will be packed in bundle with steel wire at each end of every bundle and color marking in order to help the customer to recognize his goods more easily at sight.

2. And the Cold-Rolled C Bar could be loaded into 20ft or 40ft container, or by bulk cargo.If the weight of each bundle reaches more than 3.5 mt, the loading by break bulk cargo should be choosed.When the weight of each bundle reaches less than 3mt, the loading by container should be choosed.

3.As for the transportaion from mill to loading port, the truck will be usually used. And the maximum quantity for each truck is 40mt.

4.All in all, we could do in accordance with customer's request.

 

 Cold-Rolled C Bar

 

Production Flow of Cold-Rolled C Bar:

1.The steel billet shall be heated in the high temperature furnace.

2. The heated steel billet shall be rolled five to nine times with the aim of shaping the general figure of steel u channel.

3. The rolled steel channel should be put onto the cooling bed to make the temperature low.

4. The Cold-Rolled C Bar should be straighted on the straightener.

5. The straighted steel u channel will be cut into meters by saw, as per customer's requirements.

6. At the last part of production, the channel steel must be tested in order to confirm that the finished products are completely free from crack, pore, slag, scab or fold on the surface.

 Cold-Rolled C Bar

 

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Q:Installation of floor type distribution box, foundation channel production and installation, the quota should choose which two?
Floor type distribution box installation cannot apply the distribution cabinet installation, and should set floor type of distribution box installation quota; installation set foundation channel steel foundation channel steel installation item.
Q:What is the elastic modulus of steel?
When the material is in the elastic deformation stage, its stress and strain should be changed into a positive proportion (that is to say, according to Hooke's law), and the coefficient of proportionality is called the elastic modulus. The elastic modulus of the unit is dyne per square centimeter. "Modulus of elasticity" is a physical quantity describing the elasticity of matter. It is a general term. It can be expressed as "Young's modulus", "bulk modulus" and so on.When it is difficult to cause confusion, the modulus of elasticity of a general metallic material refers to Young's modulus, i.e., positive modulus of elasticity.Unit: E (elastic modulus) MPa (MPa)
Q:What is the minimum size of channel steel?
Channel 5# channel, width of 50 mm, 37 mm high leg, thickness 4.5 mm.
Q:6.3# how long is the channel length?
Standard Specification for hot rolled plain channel steel:63*40*4.8 6.3# 6.635 KG/M channel measurement theoretical weight weight calculation theory for calculation of steel kg (kg). The basic formula is: W (weight, kg) = F (basal area mm2) * L (length m) * P (density g/cm3) * 1/1000 steel density: 7.85g/cm3.63**40 *4.8 6.3# 6.635
Q:Is channel steel cold rolled or hot rolled?
Belong to hot rollingThe raw material steel billet for channel steel is carbon or low alloy steel billets with a carbon content of not more than 0.25%. The finished channel steel is delivered by hot forming, normalizing or hot rolling. The specifications are expressed in millimeters of height (H) * leg width (b) * waist thickness (d), such as 100*48*5.3, which means waist height is 100 mm, leg width is 48 mm, waist thickness is 5.3 mm channel, or 10# channel steel. The same height of the channel, if there are several different leg width and waist thickness, also need to add a, B, C on the right side of the model to distinguish, such as 25#a, 25#b, 25#c and so on.
Q:Channel 18, number 18. What does it mean?
The theoretical weight of 19.752 kg per metre, channel 18#a specifications 180X, 68x 7 mm, theoretical weight of 20.174 kg per meter, channel 18#b specifications 180 X70 x9mm, theoretical weight of 23 kg per meter, specifications are x height, X leg width, waist thickness.
Q:Duplex building intermediate layer with channel steel or cast well?
I think it depends on the use of the attic. If it is out of the storage room, it is better to use channel steel. The construction is convenient, the cost is not high, and the bearing is enough. But if it is out of the room, it may be better to cast in placeMy home is a storage room, with the channel, did not shake the feeling, and the ceiling is not good. I want to crack crack is the ceiling decoration when do not cause, and with no direct relationship. What interlayer added: cast steel frame and each has its own advantages and disadvantages, in addition to the above several mentioned price factors, sound insulation effect, simple construction of the steel frame (relative cast-in-place for), as long as the proper construction (for experienced professional (staff) Company) should not be like the steel welding good will shake, 10000% ceiling cracking, the cost is not low, the cost is very high, the noise is too large for a long time. The wood board ceiling or rotten, cracking phenomenon, now generally spans more than 3 meters will be used to make steel, there are no shaking, and part of the ceiling steel frame does not occupy a space, can make a building Type, the cast is not good, if you want to do, you have to sacrifice height, and the general floor space is not very high, as the choice depends on your own intentions and needs
Q:Reasons for opening holes on channel steel?
In order to make concrete filling into here to go inside, so that there would be no empty embedded sound supervision acceptance will not say do not realize as the filling.
Q:Large steel channel used for steel structural staircases
If not sure, can see 15j401 Gangti atlas. Choosing proper channel steel can not only ensure the structural safety, but also achieve the goal of saving the cost! Hope to help you!
Q:What is the difference between channel steel and C steel?
Section C is produced by cold rolling of strip steel, which is generally supplied by steel structure and thinner in thickness. In addition, their cross-section is not the same, the channel is straight side, C steel is curling.
JANG is a professional company specilized in cold bend angle, cold bend U channel and other cold formed sectional steel. Since the established of our company, we aimed to provide the customers qualified product with good price and convenient service.

1. Manufacturer Overview

Location Tianjin, China
Year Established 2007
Annual Output Value Above US$ 15 Million
Main Markets Southeast Asia; Africa
Company Certifications

2. Manufacturer Certificates

a) Certification Name  
Range  
Reference  
Validity Period  

3. Manufacturer Capability

a)Trade Capacity  
Nearest Port Tianjin
Export Percentage 15%-20%
No.of Employees in Trade Department 11-20 People
Language Spoken: English; Chinese;
b)Factory Information  
Factory Size: Above 6,500 square meters
No. of Production Lines 1
Contract Manufacturing OEM service offered
Product Price Range average